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Dissertations / Theses on the topic 'Plant proteins Genetic aspects'

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Published: 4 June 2021

Last updated: 14 February 2022

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1

Singh, Nagendra Kumar. "The structure and genetic control of endosperm proteins in wheat and rye." Title page, contents and abstract only, 1985. http://web4.library.adelaide.edu.au/theses/09PH/09phs6174.pdf.

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2

Cheung, Wai-ying, and 張慧盈. "Characterization of plant homeodomain finger protein 11 (PHF11), a candidate tumor suppressor, in esophageal squamous cell carcinoma." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2012. http://hub.hku.hk/bib/B50162834.

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Esophageal squamous cell carcinoma (ESCC) is a common cancer worldwide with a high mortality rate. High occurrence of ESCC is observed in Southeast Asia. Identification and characterization of ESCC important tumor suppressor genes will be highly beneficial to the understanding of the disease and for the early diagnosis and improvement of therapy for the cancer. In our previous microcell-mediated chromosome transfer (MMCT) studies, the transfer of an intact chromosome 13 into the recipient ESCC cell line revealed the tumor suppressive ability and putative tumor suppressive function of chromosome 13 in ESCC. One candidate gene, Plant-Homeodomain Finger Protein 11(PHF11), was identified from the study and selected for further functional studies in this current study. PHF11, located on chromosomal region 13q14, contains two plant homeodomain fingers and is a member of the PHD finger protein family. PHF11was reported to be associated with asthma and atopic diseases, yet no studies of PHF11havebeen reported in cancer to date. This study is the first to report the functional role of PHF11in tumor suppression. In this current study, two isoforms of PHF11, PHF11aand b, were reintroduced into ESCC cell lines by methods of transient tranfection and lentiviral-infection. In vitro studies showed both isoforms have cell proliferation and colony-formation inhibition abilities. In the nude mouse tumorigenicity assay, however, it was revealed that only thePHF11aisoform was tumor suppressive in vivo. No differences in angiogenesis-related factors and apoptosis-related factors were observed in PHF11a-and b-expressing cells. Further studies by Western blotting analysis and flow cytometry analysis showed that PHF11amay play a role in delaying cell cycle progression by the down-regulation of cyclin expression, while the PHF11bmay be functionally inactive, The results of this current study further confirm the tumor suppressive role of PHF11ain ESCC, whereas the PHF11b isoform was unable to suppress tumor formation in vivo. Further study of the PHF11 isoforms to identify their differential functions and interacting partners will provide a better understanding of the mechanism by which PHF11a suppressestumor growth.
published_or_final_version
Clinical Oncology
Master
Master of Philosophy

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3

Maree, H. J. (Hans Jacob). "The expression of Dianthin 30, a ribosome inactivating protein." Thesis, Stellenbosch : Stellenbosch University, 2003. http://hdl.handle.net/10019.1/53633.

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Thesis (MSc)--Stellenbosch University, 2003.
ENGLISH ABSTRACT: Ribosome inactivating proteins (RIPs) are currently classified as rRNA N-glycosidases, but also have polynucleotide: adenosine glycosidase activity. RIPs are believed to have anti-viral and anti-fungal properties, but the exact mechanism of these proteins still need to be elucidated.The mechanism of resistance however, appears to be independent of the pathogen. For resistance the RIP terminates virus infected plant cells and stops the reproduction and spread of the virus. Transgenic plants containing RIPs should thus be resistant to a wide range of viruses. The ultimate goal of the larger project of which this forms part is the development of virus resistant plants. To monitor the expression of a RIP in a transgenic plant a detection method had to be developed. Antibody detection of the RIP was decided upon as the most cost effective method. The RIP, Dianthin 30 from Dianthus caryophyllus (carnation), was used and expressed in bacterial and insect expression systems. The bacterial expression experiments were done using the pET expression system in BL21(DE3)pLysS cells. The expression in this system yielded recombinant protein at a very low concentration. Expression experiments were also performed in insect tissue culture with the baculovirus vector BAC-TO-BAC™.With this system the expression was also too low to be used for the production of antibodies. A Dianthin 30 specific peptide was then designed and then produced by Bio-Synthesis. This peptide was then used to raise antibodies to detect Dianthin 30. These antibodies were tested on Dianthus caryophyllus proteins. To establish if this detection method was effective to monitor the expression in plants, tobacco plants were transformed with Agrobacterium tumefaciens containing Dianthin 30 in the pART27 plant expression vector. The putative transformed plants were analysed with peR and Southern blots.
AFRIKAANSE OPSOMMING: Tans word Ribosomale-inaktiverende proteïene (RIPs) geklassifiseer as rRNA N-glikosidase wat ook polinukleotied: adenosien glikosidase aktiwiteit bevat. Daar word geglo dat RIPs anti-virale en anti-fungus eienskappe bevat, maar die meganisme van beskerming word nog nie ten volle verstaan nie. Dit is wel bewys dat die meganisme van weerstand onafhanklik is van die patogeen. Virus geinfekteerde plantselle word deur die RIP gedood om die voortplanting en verspreiding te bekamp en sodoende word weerstand bewerkstellig. Transgeniese plante wat dan 'n RIP bevat sal dus weerstandbiedend wees teen 'n wye spektrum virusse. Die hoofdoel van die breër projek, waarvan die projek deel uitmaak: is die ontwikkeling van virusbestande plante. Om die uitdrukking van die RIP in die transgeniese plante te kontroleer, moes 'n deteksie metode ontwikkel word. Die mees koste effektiewe deteksie metode is met teenliggame. Die RIP, Dianthin 30 from Dianthus caryophyllus (angelier) was gebruik vir uitdrukking in bakteriele- en insekweefselkultuur. Die bakteriele uitdrukkingseksperimente was gedoen met die pET uitdrukkings sisteem III BL21(DE3)pLysS selle. Die uitdrukking in die sisteem het slegs rekombinante proteïene gelewer in uiters lae konsentrasies. Uitdrukkingseksperimente was ook gedoen in insekweefselkultuur met die baculovirus vektor BAC-To- BACTM. Met die sisteem was die uitdrukking ook veels te laag om bruikbaar te wees vir die produksie van teenliggame. Daar is toe 'n peptied ontwerp wat Dianthin 30 kan verteenwoordig vir die produksie van teenliggame. Die teenliggame is getoets teen Dianthus caryophyllus proteïene. Om vas te stel of die deteksiemetode wel die uitdrukking van Dianthin 30 sal kan monitor, is tabak ook getransformeer met Dianthin 30. Die transformasies is gedoen met die hulp van Agrobacterium tumefaciens en die pART27 plant uitdrukkings vektor. Die plante is getoets met die polimerase ketting reaksie en Southern klad tegnieke.

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4

Joubert, Dirk Albert 1973. "Regulation of the Vitis vinifera PGIP1 gene encoding a polygalacturonase-inhibiting protein." Thesis, Stellenbosch : Stellenbosch University, 2004. http://hdl.handle.net/10019.1/53759.

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Thesis (PhD)--University of Stellenbosch, 2004.
ENGLISH ABSTRACT: Plant-pathogen interactions have been intensively investigated in the last decade. This major drive towards understanding the fundamental aspects involved in plant disease resistance is propelled by the obvious agricultural and economical benefits that are intrinsically linked to disease and stress resistant plants. It is, therefore, not surprising that fundamental research in this area is not just restricted to model organisms, such as Arabidopsis and tobacco, but also extends to more traditional crop plants, such as maize, bean, soybean, apples, grapevine etc. In grapevine for instance, several genes involved in disease resistance have been isolated. One of these genes, encoding for a polygalacturonase inhibiting protein (PGIP), has been studied extensively. PGIPs are cell wall bound, contain leucine rich repeats (LRR) and are found in all dicotyledonous plants so far examined. In most cases, pgip genes occur in small multigene families and expression is often tissue specific and developmentally regulated. Up-regulation of PGIP-encoding genes typically occurs upon pathogen infection, treatment with elicitors, salicylic acid (SA), jasmonic acid (JA), cold treatment and wounding. Differential regulation and specificity have been shown to occur between members of the same multigene family. Differential regulation even extends to the utilization of separate pathways to induce pgip genes from the same family in response to a single stress stimulus. PGIPs interact with cell wall macerating polygalacturonases (PGs) that are secreted by pathogenic fungi during the infection process. The antifungal action of PGIPs is thought to depend on a dual action. The physical interaction of PGIP with PGs has an inhibitionary effect, resulting in (i) a slower fungal infection rate and (ii) the prolonged existence of long chain oligogalacturonides (OGs). These oligosaccharides are able to elicit a general plant defense response, enabling the plant to further retard or curb the spread of infection. The main objective of this study was to investigate the regulatory aspects underlying PGIP expression in grapevine. Unlike most characterized PGIP encoding genes from other dicotyledonous plant species, no evidence to support the existence of a V. vinifera PGIP multigene family could be found from either genetic or biochemical analyses. Recently, a genomic DNA fragment from Vitis vinifera cv Pinotage was pathogen interactions with regards to the fundamental processes underlying defense gene regulation.
AFRIKAANSE OPSOMMING: Die ooglopende voordele wat, vanuit 'n landboukundige én ekonomiese oogpunt, uit siekte- en stresbestande plante spruit, het gedurende die laaste dekade aanleiding gegee tot die ontwikkeling van plantpatogeen-interaksies as "n baie belangrike studieveld. Dit was dus ook te verwagte dat fundamentele navorsing in hierdie area nie net beperk gebly het tot modelorganismes soos Arabidopsis en tabak (ook natuurlik van landboukundige belang) nie, maar ook na meer tradisionele landbougewasse soos mielies, boontjies, sojaboontjies, appels, druiwe, ens. oorgevloei het. Verskeie siekteweerstands-verwante gene is byvoorbeeld al vanuit wingerd geïsoleer. Een só "n geen wat vir "n poligalakturonase-inhiberende proteïen (PGIP) kodeer, vorm deel van hierdie groep gene. Die funksie en regulering van PGIP's is baie goed bestudeer. Hierdie proteïene word normaalweg in die selwande van die meeste dikotiele plante aangetref. Leusienryke herhalings is algemeen in PGIP's en hierdie tipe van herhalings is kenmerkend van proteïene betrokke by proteïen-proteïen-interaksies. Verder word pgip-gene gewoonlik in klein multigeenfamilies aangetref, waar in die meeste gevalle die uitdrukking weefselspesifiek en die regulering spesifiek ten opsigte van die ontwikkelingsfase is. Verskeie faktore kan tot die induksie van pgip-gene lei, soos onder andere patogeen-infeksie, elisitoor-, salisiensuur-, jasmoonsuur- en kouebehandeling, asook verwonding. Differensiële regulering word in baie gevalle tussen lede van dieselfde multigeenfamilie aangetref. Hierdie differensiële regulering kan selfs bemiddel word deur onafhanklike reguleringsweë in reaksie op dieselfde induksiestimulus. PGIP's is in staat om te reageer met poligalakturonases (PGs), wat selwande afbreek en wat gedurende die infeksieproses deur swamme of fungi afgeskei word. Die effek van hierdie interaksie is tweeledig: (i) Die fisiese interaksie tussen PGIP en PG moduleer die aktiwiteit van die PG deur die ensiemaksie te inhibeer, en (ii) PGinhibisie lei tot die verhoogde stabiliteit van langketting-oligogalakturonades, molekules wat daartoe in staat is om die weerstandsrespons van plante te ontlok. Die inhibisie van die patogeen-PG's, tesame met die geïnduseerde weerstandrespons, stel die plant dan in staat om verdere infeksie te vertraag of te verhoed. Die doel van hierdie studie was om die onderliggende aspekte van PGIPregulering in wingerd te bestudeer. In teenstelling met die meeste plantspesies waar pgip-gene in klein multigeenfamilies aangetref word, is daar nie 'n pgip-multigeenfamilie in wingerd nie. Veelvuldige kopieë van In enkele pgip-geen word egter in die wingerdgenoom aangetref. Daar is onlangs in ons laboratorium In genoom-DNAfragment vanaf Vitis vinifera cv Pinotage geïsoleer wat die oopleesraam en 5'-stroomopsekwense van In PGIP-enkoderende geen (Vvpgip1) bevat. In hierdie studie is die uitdrukkingspatroon van Vvpgip1 ten opsigte van weefselspesifisiteit, korrelontwikkelingsfase, asook die effek van verskeie omgewings en patogeenverwante stres-stimuli ontleed. Die regulatoriese meganismes van Vvpgip1 bevat spesifieke in planta-ontwikkelingsfaseseine wat verder deur spesifieke faktore, insluitende omgewings- en patogeenstres, gereguleer word. In lyn hiermee is mRNS-transkripte van Vvpgip1 tot wortel- en korrelweefsels beperk, terwyl die mRNS-vlakke ook tussen verskillende korrelontwikkelingsfases wissel. Kumulatiewe uitdrukking kon waargeneem word in veráison-korrels in reaksie op verwonding en osmotiese stres. Die weefselspesifieke uitdrukkingspatroon tipies van wingerd-PGIP is in blare opgehef in reaksie op Botrytis cinerea-infeksie, verwonding, osmotiese stres, ouksien (indoolasynsuur) en salisiensuur. PGIP-uitdrukking word ook onderdruk deur In staurosporien-sensitiewe proteïenkinase, wat In goeie aanduiding is van die betrokkenheid van proteïenfosforilasie in die seintransduksiekaskade wat tot PGIPuitdrukking aanleiding gee. Die geïnduseerde PGIP-uitdrukkingsprofiel in wingerdblare kan ook nageboots word in tabak wat met die Vvpgip1-geen en -promotor getransformeer is. PG-inhibisie-eksperimente met membraan-geassosieerde proteïenekstrakte van geïnduseerde wingerdblare het ook dieselfde profiel getoon as dié van PGIP wat deur die Vvpgip1-geen geënkodeer is. Die uitdrukkingsprofiel van PGIP in die transgeniese tabakplante het ook bewys dat die promotor van die Vvpgip1-geen vir die geïnduseerde PGIP-uitdrukkingsprofiel in wingerdblare verantwoordelik is. In silica-analise van die promotorarea dui op die teenwoordigheid van verskeie cis-werkende elemente. Die kern promotor en transkripsie-aanvangsgedeelte is gevolglik eksperimenteel bepaal. Verder het uitdrukkingseksperimente met promotorfragmente verskeie dele van die promotor geïdentifiseer wat by stimulis-geassosieerde uitdrukking betrokke is. Posisioneel is hierdie fragmente in goeie konteks met die voorspelde cis-werkende elemente en kan dus die basis vorm vir verdere studies oor Vvpgip-regulering. Met hierdie studie word die eerste data verskaf waar die regulering van PGIP deur omgewingsverwante faktore verbind kan word met onwikkelingspesifieke toestande in die plant. Verder verskaf die resultate verdere bewyse vir die rol van PGIP in plant-patogeen-interaksies en lewer spesifieke bydraes tot die onderliggende prosesse wat by die regulering van siekteweerstandverwante gene betrokke is.

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5

Becker, John van Wyk. "Plant defence genes expressed in tobacco and yeast." Thesis, Stellenbosch : University of Stellenbosch, 2002. http://hdl.handle.net/10019/2924.

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6

Sassi, Giovanna. "Relative quantification of host gene expression and protein accumulation upon turnip mosaic potyvirus infection in tobacco." Thesis, McGill University, 2004. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=81433.

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Turnip mosaic virus (TuMV) infects a variety of crops, worldwide, including the economically relevant Brassicacea family. It was previously demonstrated that TuMV infection in tobacco protoplasts leads to an overall decrease of host protein. However, it remains unclear whether this phenomenon is due to the repression of plant gene transcription during the infection period or due to viral inhibition of host translation. In this study, quantification of various transcripts and protein products from infected tobacco was performed via real-time RT-PCR and ELISA. In comparison to the gamma-tubulin endogenous control, gene expression for the tobacco H3, HSP70 and granule-bound starch synthase was affected by TuMV infection with time.
Tobacco protein accumulation in whole leaf tissues was also significantly affected by increase of virus particles.

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7

Ozumit, Alen. "Interaction between turnip mosaic potyvirus (TuMV) cylindrical inclusion protein and Arabidopsis thaliana histone H3 protein." Thesis, McGill University, 2003. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=79060.

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Turnip mosaic potyvirus (TuMV) is a single-stranded RNA plant virus. One of its proteins, the cylindrical inclusion (CI) protein, was hypothesized to interfere with host transcription via interaction with histone H3 protein. Interaction between CI and histone H3 was previously observed in Dr. Fortin's laboratory. Based on previous studies that demonstrated the importance of the H3 tail domain in gene regulation and chromosome arrangement, it was hypothesized that CI would interact with the tail rather than the globular domain. The objective of this project was to identify which histone H3 domains CI protein interacts with. The full-length, globular, and tail domains of histone H3 DNA were expressed in E. coli and purified. Based on in vitro interaction experiments, the CI protein was observed to interact with the globular domain of histone H3.

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8

Zhan, Ye. "Molecular analysis of turnip crinkle virus coat protein mutations." Link to electronic thesis, 2002. http://www.wpi.edu/Pubs/ETD/Available/etd-0430102-142639.

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9

Phelan, Thomas Joseph. "GENETIC AND MOLECULAR ANALYSIS OF PLANT NUCLEAR MATRIX PROTEINS." NCSU, 2001. http://www.lib.ncsu.edu/theses/available/etd-20011104-233111.

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PHELAN, THOMAS JOSEPH, Genetic and Molecular Analysis of Plant Nuclear Matrix Proteins. (Under the direction of Steven L. Spiker.)The eukaryotic nucleus is composed of DNA, RNA and protein, encapsulated by a nuclear envelope. DNA is compacted up to ten thousand times in order to be packaged into the nucleus. The nucleus must maintain order in the presence of a very high density and variety of protein and RNA. The nuclear matrix is a proteinaceous network thought to provide structure and organization to the nucleus. We believe that relatively stable interactions of nuclear molecules with the nuclear matrix are key to organization of the nucleus. Numerous "Matrix Attachment Region" DNA elements (MARs), have been isolated from plants, animals, and fungi. Evidence suggests that these MARs attach to the nuclear matrix, delimiting loops of chromosomal DNA. In studies of transgenic plants and animals, MARs have been shown to give important advantages to organisms transformed with genes flanked by these elements. Unlike most DNA elements, no specific sequence elements have been identified in MAR DNAs. Partly due to the insolubility of the matrix, and to the heterogeneity of MAR DNA, very few of the protein components of the nuclear matrix have been identified. This work presents analysis the proteins of the plant nuclear matrix. We have characterized a set of related proteins from the model plant Arabidopsis that associate with MAR DNA in vitro. These proteins appear to be similar to the NOP56/NOP58 family of proteins previously identified in several eukaryotic organisms. The NOP56/NOP58 proteins are thought to be involved in modifications of ribosomal RNA. Binding studies presented in this work suggest that these plant proteins may participate in RNA/DNA/protein complexes in the nucleus.

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10

Tan, Lor-Wai. "Biochemical aspects of self-incompatibility in Petunia hybrida." Title page, Contents and Summary only, 1988. http://web4.library.adelaide.edu.au/theses/09A/09at161.pdf.

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Mui, Kin-cheong, and 梅堅祥. "Inactivation of DNA match repair proteins in premalignant lesions in Lynch syndrome." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2010. http://hub.hku.hk/bib/B44659635.

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Boonyapipat, Pawika. "Dissecting the role of eIF2[alpha] phosphorylation in translational control using a transgenic plant model." Laramie, Wyo. : University of Wyoming, 2005. http://proquest.umi.com/pqdweb?did=1095423901&sid=1&Fmt=2&clientId=18949&RQT=309&VName=PQD.

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Gibson, Janet Rae. "A study of RAS p21 and related GTP-binding proteins." Thesis, University of East Anglia, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.293243.

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14

Khoshbakht, Korous. "Agrobiodiversity of plant genetic resources in Savadkouh, Iran, with emphasis on plant uses and socioeconomic aspects." Kassel Kassel Univ. Press, 2005. http://deposit.d-nb.de/cgi-bin/dokserv?idn=982014562.

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Wong, Yee-man Elaine, and 王怡雯. "Identification and characterization of VCY2 interacting proteins." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2002. http://hub.hku.hk/bib/B31228008.

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Filkowski, Jody, and University of Lethbridge Faculty of Arts and Science. "The effect of pathogens on plant genome stability." Thesis, Lethbridge, Alta. : University of Lethbridge, Dept. of Biological Sciences, 2004, 2004. http://hdl.handle.net/10133/254.

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Resistance (R) genes, a key factor in determining the resistance of plants, have been shown often to be highly allelic entities existing in duplicated regions of the genome. This characteristic suggests that R-gene acquisition may have arisen through frequent genetic rearrangements as a result of transient, reduced genome stability. Tabacco plants transgenic for a recombination construct exhibited reduced genome stability upon infection with a virulent pathogen (tobacco mosaic virus). The reduced genome stability manifested as an increase in recombination events in the transgene. Such increases were observed following a virulent pathogen attack. This increase in recombination was shown to be systemic and was observed prior to systemic viral movement suggesting the presence of a systemic recombination signal. Further molecular analyses revealed that specific R-gene loci experience a large frequency of rearrangements following a virulent pathogen encounter. The possible targeting of instability to R-gene regions may be controlled through epigenetic processes, in particular, DNA methylation.
xiii, 119 leaves ; 29 cm.

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Marchione, Wesley A. "Pathogen resistance genes and proteins in orchids." Virtual Press, 2003. http://liblink.bsu.edu/uhtbin/catkey/1260625.

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To study resistance (R) genes that are expressed when Sophrolaeliacattleya Ginny Champion 'Riverbend' orchid tissue was infected with the tobacco mosaic virus (TMV0), a subtraction library of cDNA clones was previously constructed using mRNA isolated before and after infection (Shuck, unpublished). From 200 clones collected, 5 clones were randomly selected, DNA was isolated, and the cDNA insert was sequenced. These sequences were imported into BLAST to search for homology to other R genes. This search revealed clone 4A to have an 84% homology to a 54 nucleotide region from the Arabidopsis thaliana oligouridylate binding protein which is highly expressed and known to bind RNA Polymerase III transcripts and adenovirus associated RNAs. Further bioinformatics analysis was performed utilizing databases and analysis packages available on the Internet, software such as Vector NTI (Informax, Bethesda, MD), and manual searches. However, no additional domains or motifs indicative of pathogen resistance genes were located in any of the 5 clones. Subsequently, total proteins expressed at various time points following infection were examined on denaturing 5-20% gradient polyacrylamide gels stained with the ProteoSilver Plus TM silver stain kit (Sigma, St. Louis, MO) in order to examine the timing and duration of expression of proteins involved in TMV-O resistance. One protein of-18 kDa was highly expressed at 4 hr after infection that was not seen in the negative control. By 8 hr the band was no longer expressed, it was expressed again from 30 - 48 hr, but was not seen again in later time points. Finally, total mRNA isolated from pooled time points and subjected to in vitro translation indicated a reduction in translation products after infection, providing evidence of posttranscriptional gene silencing (PTGS) following TMV-O infection.
Department of Biology

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Khoshbakht, Korous [Verfasser]. "Agrobiodiversity of plant genetic resources in Savadkouh, Iran, with emphasis on plant uses and socioeconomic aspects / Korous Khoshbakht." Kassel : Kassel Univ. Press, 2006. http://d-nb.info/982014562/34.

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Anderson, David John. "Heterotrimeric G proteins in plant signal transduction : characterisation of tobacco and arabidopsis G ̊subunits /." [St. Lucia, Qld.], 2002. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe16840.pdf.

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Li, Hung-sing, and 李鴻陞. "Identification of polycomb group protein CBX8 as a novel tumor suppressor in human colorectal cancer." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2014. http://hdl.handle.net/10722/197534.

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Polycomb group (PcG) proteins governs the regulation of diverse cellular functions, such as cell fate decision, cell cycle progression, maintenance of embryonic stem cell pluripotency, and DNA damage repair. Although aberrant expression of PcG proteins has been frequently reported in different cancer types, CBX8 is one of the least studied PcG family members in cancer. Recently, a study showed that forced expression of CBX8 in normal human and mouse fibroblasts demonstrated that cells could bypass senescence via INK4a-ARF repression; while another report demonstrated that CBX8 was involved in MLL-AF9-linked leukemogenesis. Despite accumulating evidence on CBX8-related carcinogenic functions, the role of CBX8 in solid cancers has not been investigated thus far. This study is therefore initiated to investigate and establish the functional role of CBX8 in colorectal cancer. In this study, expression of CBX8 in 121 pairs of human CRC samples was analyzed by immunohistochemistry; and data were correlated with different clinicopathological parameters. To evaluate the functional effects of CBX8, CBX8 overexpressed and downregulated clones were established from three CRC cell lines. The in vitro effects of CBX8 on cell proliferation, cell cycle progression and apoptosis profiles were investigated; and the effects of CBX8 on tumorigenicity in vivo were further demonstrated in mice xenograft models. The results showed that CBX8 expression was downregulated or loss in approximately 48.8% of human colorectal tumors, and downregulated or loss of CBX8 expression were mainly observed in tumors with intermediate to later stages (stage II to IV). Moreover, expression of CBX8 showed a significant inverse correlation with colorectal tumor sizes (P < 0.0001). Ectopic expression of CBX8 in CRC cell lines resulted in inhibition of cell proliferation, clonogenic ability and anchorage-independent growth, which are hallmarks of tumorigenesis. Conversely, downregulation of CBX8 promoted proliferation and clonogenic ability. Moreover, it was found that restoring CBX8 expression could induce G0/G1 arrest of cell cycle. The tumor suppressive role of CBX8 in colorectal cells was further demonstrated in vivo through subcutaneous and orthotropic mice tumor models; followed by immuno-staining of the proliferation marker Ki-67. To unveil the possible mechanisms behind the tumor suppressing effects of CBX8, two signalling pathways commonly engaged in CRC were evaluated. At least part of the effects could be attributed to the mediation of MAPK signaling pathway; whereas the Wnt signalling was not affected by CBX8. This study demonstrated for the first time the loss of CBX8 expression in intermediate and late stage tumors, and was the first to report the tumor suppressing ability of CBX8 in solid cancers. The effects of CBX8 in this study were different to the functional implications reported in the current literature. This functional divergence in distinct cell types suggested a dynamic role of CBX8 depending on specific cellular context.
published_or_final_version
Surgery
Master
Master of Philosophy

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Cheng, Wan-biu, and 鄭雲標. "Genetic analysis on the EPHB2 gene in breast cancer." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2005. http://hub.hku.hk/bib/B45009946.

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Tsang, Wai-hung, and 曾偉雄. "The transcription regulation of Epstein-Barr virus latent membrane protein gene in nasopharyngeal carcinoma cell line." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1999. http://hub.hku.hk/bib/B31221774.

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Tang, Kei-shuen, and 鄧紀旋. "Role of BRCA1 in stress-induced autophagy in breast and ovarian cancercells." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2011. http://hub.hku.hk/bib/B45847204.

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Tian, Lu. "Characterization of Genetic Mutants Encoding Four Hydroxyproline Galactosyltransferases (Hyp-galts) for Arabinogalactan-proteins in Arabidopsis." Ohio University / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1449055014.

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25

Xu, Kexin, and 許克新. "Identification and evaluation of specific marker proteins associated with human benign peostate [sic] hyperplasia." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2002. http://hub.hku.hk/bib/B31226954.

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Yeung, Chun-yu, and 楊振宇. "Adipocyte- and epidermal-fatty acid-binding proteins in relation to obesity and its medical complications." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2009. http://hub.hku.hk/bib/B44204565.

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27

Horscroft, Nigel John. "Orbivirus non-structural protein NS2 : its role in virus replication." Thesis, University of Oxford, 1997. http://ora.ox.ac.uk/objects/uuid:9b550db6-dd9d-4127-941f-93eab2b6e038.

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28

Ortiz-Medina, Estela. "Potato tuber protein and its manipulation by chimeral disassembly using specific tissue explantation for somatic embryogenesis." Thesis, McGill University, 2006. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=103001.

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Potato is a major part of the human diet in many countries of the world, providing substantial levels of carbohydrate, protein, and vitamins. This study examined the tuber protein content. In the first part of the research, total soluble protein (TSP) and patatin concentration were determined in periderm, cortex, and pith, in tubers of 20 important potato cultivars. TSP concentration was greater in periderm and lesser in cortex and pith tissues. Patatin was present in all tuber tissues but with the opposite pattern, less in periderm and greater in cortex and pith tissues. For intercultivar comparisons, a means of converting the specific tissue-based TSP and patatin data (dry weight) into a uniform weight whole tuber basis was developed. This relied on conversion factor values that were generated from percent weight tissue proportion and percent dry matter for each tissue layer. Cultivars with relatively more or less TSP and patatin in each tissue layer, and on a whole tuber basis, were identified. In the second part of the study, disassembly of chimeral (Russet Burbank) and putatively chimeral (Alpha, Bintje, Red Gold) tubers into their component genotypes was evaluated as a strategy for the production of intraclones with altered protein content. Explants were selected from tissue with greater or lesser protein levels and somatic embryogenesis was used to produce regenerants from each tissue source. Russeting was used as a phenotypic marker and TSP as a biochemical marker. Russet Burbank was confirmed as a periclinal chimera, although chimeral instability was evident, since some non-chimeral regenerants showed displacement of LI tunic cells with the russeting mutation into the pith. Red Gold was "uncovered" as an LII periclinal chimera (Red-Gold-Red). The value of chimeral disassembly in explaining an important component of somatic variation was clearly seen with this cultivar. The inconsistent TSP distribution in Russet Burbank intraclones proved that TSP was not distributed in a periclinal chimeral manner, as initially hypothesized. However, there was clear variation in protein content in the tubers of non-chimeral regenerants. Periclinal chimeral disassembly and somatic embryogenesis are potentially useful technologies for the production of improved intraclones of potato.

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Neadeau, Joseph Francis. "Comparing Genetic Modification and Genetic Editing Technolgies: Minimal Required Acreage." Thesis, North Dakota State University, 2018. https://hdl.handle.net/10365/29878.

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There are many technologies being developed for crop breeding. Two interesting technologies are genetic modification and genetic editing. Competitive pressures and changing consumer preferences are forcing organizations to invest heavily in these two technologies. Organizations must decide which traits they want to target and must commit significant time a money to the project. Traditionally, firms would decide which project to embark on if the project is net present value positive. Throughout the research and development process managers have flexibility to abandon the project once new information is received. That flexibility has value and real option analysis must be performed to value that flexibility. Once the value of a GM and GE project is determined, how might an organization decide which project to do? The concept of minimum required acreage (MRA) is developed in this study, allowing organizations to compare GM and GE technologies and decide which project to invest it.

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Chow, Yan-ching Ken, and 周恩正. "Characterization of the apoptotic properties of severe acute respiratory syndrome coronavirus (SARS-CoV) structural proteins." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2004. http://hub.hku.hk/bib/B30105493.

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Boyko, Oleksandr, and University of Lethbridge Faculty of Arts and Science. "Influence of various factors on plant homologuous recombination." Thesis, Lethbridge, Alta. : University of Lethbridge, Faculty of Arts and Science, 2004, 2004. http://hdl.handle.net/10133/243.

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The genome of living organisms is constantly subjected to the environmental influences that result in different negative, negligible or positive impacts. The ability to maintain the genome integrity and simultaneously provide its flexibility is the main determinant for the evolutionary success of any species. One of the important aspects of genome maintenance is the precise regulation of the DNA repair machinery. Results reported here indicate the existence of a tight, age-dependent regulation of homologous recombination, one of the two main DNA double-strand break repair pathways. We show that recombination is influenced by conditions such as the change of temperature (cold or warm), day length, water availability (drought or overwatering stress) and salinity. These stresses not only influence the genome stability of stress-subjected generations but also change the recombination in subsequent generations. This indicates the possible involvement of homologous recombination in plant evolution and development of plant stress tolerance.
xiv, 121 leaves ; 29 cm.

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Liu, Zun Kearney Christopher Michel. "New viral vectors for the expression of antigens and antibodies in plants." Waco, Tex. : Baylor University, 2009. http://hdl.handle.net/2104/5341.

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陳漢文 and Hon-man Chan. "Overexpression of translationally controlled tumor protein (TCTP) predisposes to hepatocellular carcinoma." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2012. http://hdl.handle.net/10722/193056.

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Hepatocellular carcinoma (HCC) is the most common tumors worldwide. In contrast to other cancers, the prognosis of HCC is extremely poor, with less that 5% of 5-year survival rate worldwide. From our previous studies, we isolated Chromodomain Helicases/ATPase DNA binding protein1-Like (CHD1L) gene from chromosome 1q21, and characterized it as a specific oncogene in HCC. By using 2D-PAGE and MALDI-TOF mass spectrometry approach, Translationally Controlled Tumor Protein (TCTP) was identified as a CHD1L target, which was preferentially expressed in CHD1L-transfected cells. TCTP is a highly conserved protein and expressed in almost all mammalian tissues. It has been reported that TCTP interacts with microtubules in a cell-cycle-dependent manner, and functions as a prosurvival factor and inhibiting apoptosis. To better understand the molecular mechanisms of HCC progression, the effect of TCTP overexpression in HCC and the mechanism by which TCTP regulated cell-cycle progression were elucidated in this study. CHD1L is a unique oncogene belongs to SNF2-like subfamily. Mechanistic studies found that CHD1L protein directly binds to the promoter region (nt -733 to -1,027) of TCTP and activated TCTP transcription. Investigation of clinical HCC specimens found that overexpression of TCTP was not only significantly associated with the advanced tumor stage (P = 0.037) and overall survival time of HCC patients (P = 0.034), but also an independent marker associated with poor prognostic outcomes. Functional studies demonstrated that TCTP has tumorigenic abilities and overexpression of TCTP contributed to the mitotic defects of tumor cells. Further mechanistic studies demonstrated that TCTP promoted the ubiquitin-proteasome degradation of Cdc25c during mitotic progression, which caused the failure in the dephosphorylation of Cdk1 on Tyr 15 and decreased Cdk1 activity. The consequence of chromosome missegregation and mitotic catastrophe results in aneuploidy, which is frequently observed in cancer. In addition, the correlation between TCTP overexpression and metastatic potential of HCC was elucidated by examined the expression levels of TCTP using a tissue microarray (TMA) containing 60 pairs of primary HCCs and their matched metastases. Further studies demonstrated that overexpression of TCTP shows high incidence of extrahepatic metastasis and positive correlation was found between TCTP and MMP-2 or MMP-9 (Spearmen correlation coefficient=0.466, and 0.352, respectively, P<0.001 for both). In vitro functional studies showed that TCTP protein associated with promoter regions of MMP-2 and MMP-9 and activates their transcriptions. Molecular analyses revealed that TCTP served as a JunD coactivator and formed complexes with JunD and bind with consensus AP-1 sites on MMP-2 and MMP-9 promoters to enhance their expression in HCC cells. More importantly, high co-expression of TCTP and MMP-2 or MMP-9 was significantly associated with poor disease-free survival (log rank= 8.146, and 11.677 respectively, P =0.017 and 0.003 respectively). In summary, two novel molecular mechanisms (CDH1L/TCTP/Cdc25C/Cdk1) and (TCTP/JunD/MMP-2, MMP-9) were revealed during HCC progression and metastasis. Also, the prognostic value of TCTP and MMP-2 or MMP-9 coexpression for HCC was highlight in this study.
published_or_final_version
Clinical Oncology
Doctoral
Doctor of Philosophy

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34

Sze, Man-fong, and 施敏芳. "Characterization of mitotic checkpoint proteins, MAD1 and MAD2, in hepatocellular carcinoma." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2006. http://hub.hku.hk/bib/B38438550.

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Cheung, Hiu-wing, and 張曉穎. "Significance of mitotic checkpoint regulatory proteins in chemosensitivity of nasopharyngeal carcinoma cells." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2006. http://hub.hku.hk/bib/B37233919.

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Girardi, Jerilyn K. "Does the apoptotic activity of cells ectopically expressing TAL1 and LMO1 revert to normal after RNA interference induced silencing of TAL1 and LMO1?" Virtual Press, 2008. http://liblink.bsu.edu/uhtbin/catkey/1398711.

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T-cell acute lymphoblastic leukemia (T-ALL) is a childhood cancer created through genetic alterations; most commonly upregulation of TALI and LMOI oncoproteins. T-ALL is treated with radiation and chemotherapy, but malignant T-cells are resistant to apoptotic stimulation. To study this disorder, AKR-DP-603 cells were transduced to express both oncoproteins. Western blots verified protein expression and each population was treated with etoposide. Caspase-3 and Annexin-V/FITC apoptosis assays were performed following treatment. When the response of control cells was compared to engineered cells, no difference was observed from the Annexin-V/FITC assay, and only LM01 cells showed a difference in the caspase-3 assay. Furthermore, cells were transfected with siRNA to TALI and LM01 and the apoptotic response was re-tested. Complete silencing was verified by Western and apoptotic activity varied in the TALI population for both assays. These differences might indicate that cells resisted etoposide induction and following silencing were sensitized apoptotic induction.
Department of Biology

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37

Meyer, Maria. "TheFamily of RSK Proteins : Genetic aspects of coffin-lowry syndrome, involving RSK2, and functional studies on RSK2 and two related proteins, RSK1 and RSK3." Université Louis Pasteur (Strasbourg) (1971-2008), 2002. http://www.theses.fr/2002STR13093.

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Les retards mentaux liés au chromosome X peuvent être syndromiques (MRXS) ou non-syndromiques (MRX). Dans le cas du syndrome de Coffin-Lowry (CLS), une forme de MRXS, le retard mental est associé à des anomalies notamment squelettiques. Des mutations de perte de fonction de RSK2 sont la cause de ce syndrome. Chez l'homme, RSK2 fait partie d'une famille de quatre kinases de la voie Ras/ERK-MAPK. Nous avons identifié une mutation dans le gène RSK2 dans une famille MRX, ce qui élargit le spectre phénotypique des mutations dans ce gène. Nous avons aussi montré que les techniques de western blot et de test kinase in vitro peuvent être utilisées pour le diagnostic moléculaire de CLS. Ces techniques associées à une recherche de mutations dans le promoteur du gène RSK2, ont suggéré une probable hétérogénéité génétique en ce qui concerne ce syndrome. Elles ont aussi permis l'identification de deux mutations inhabituelles d'épissage que nous avons étudié en détail. Afin de mieux comprendre les fonctions des RSKs, nous avons généré des anticorps reconnaissant spécifiquement les protéines RSK1, 2 et 3. Ces anticorps ont permis de déterminer qu' alors que RSK3 est présente de manière uniforme dans le cytoplasme et le noyau des cellules, RSK1 est principalement détectée dans des zones bien délimitées du noyau, les "speckles". Nous avons utilisé ces anticorps ainsi que les techniques de northern blot et d'hybridation in situ afin de déterminer l'expression tissulaire des RSKs. RSK1, 2 et 3 étaient toutes exprimées dans un grand nombre de tissus. Cependant, uniquement RSK2 est fortement exprimée dans certains régions du cerveau adulte impliquées dans des processus de mémoire, ce qui pourrait expliquer le déficit cognitif observé chez les patients CLS. Enfin, nous avons généré des souris invalidées pour l'expression des gènes Rsk1 et Rsk3, qui avec les animaux invalidés pour l'expression de Rsk2, seront utiles pour l'identification des fonctions spécifiques et redondantes des RSKs
Mental retardation (MR) affects 1 to 1. 5% of the population. X-linked mental retardation is divided into two classes: syndromic (MRXS) and nonsyndromic or nonspecific (MRX). The Coffin-Lowry syndrome (CLS) is a form of MRXS in which the cognitive deficit is associated to growth retardation and skeletal malformations. CLS is caused by loss of function mutations in the RSK2 gene encoding the RSK2 protein. In humans, RSK2 is member of a family of four highly related serine/threonine kinases (RSK1-4) acting in the Ras/ERK-MAPK signaling pathway and involved in various cellular processes. We found a mutation in the RSK2 gene in an MRX family, extending the phenotypic variability in patients carrying RSK2 mutations. We also showed that western blotting and in vitro kinase assays are efficient tests for molecular diagnosis of CLS. These tests along with a high scale mutational screening in the promoter region of RSK2, indicated that genetic heterogeneity in CLS should not be excluded. Western blotting allowed also the identification of two unusual splicing mutations that were studied in detail. To better understand the functions of RSK proteins, we generated polyclonal antibodies recognizing specifically RSK1, 2 and 3. These antibodies were used to determine that whereas RSK3 was uniformly distributed in the cytoplasmic and nuclear compartments, RSK1 was mainly detected in nuclear speckles, suggesting a putative role of RSK1 in splicing processes. We have also used these antibodies, as well as northern blotting and in situ hybridization, to study the tissue expression of RSKs. RSK1, 2 and 3 were all widely expressed. However, only RSK2 was detected in some brain areas involved in memory processes, providing a possible explanation for the cognitive deficit observed in CLS patients. Finally, we have generated Rsk1 and Rsk3 knockout mice which will be useful, along with the Rsk2 knockout animals, for the identification of specific as well as redundant functions of RSKs

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38

Ramburan, Viresh Premraj. "Genetic mapping of adult plant stripe rust resistance in the wheat cultivar Kariega." Thesis, Stellenbosch : Stellenbosch University, 2003. http://hdl.handle.net/10019.1/53438.

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Thesis (PhD (Agric)) -- Stellenbosch University, 2003.
ENGLISH ABSTRACT: Stripe (yellow) rust of wheat, caused by Puccinia striiformis f.sp. tritici, was first detected as a single introduction into South Africa in 1996. Two additional pathotypes have since been identified. Control of the disease may be achieved by use of genetic adult plant resistance (APR) as is present in the local cultivar 'Kariega'. The aim of this project was to understand the genetic basis of the APR in 'Kariega' to facilitate breeding of new varieties with genetic resistance to stripe rust. A partial linkage map of a 'Kariega X Avocet S' doubled haploid population covering all 21 wheat chromosomes was generated using 208 DNA markers, viz, 62 SSR, 133 AFLP, 3 RGA and 10 SRAP markers, and 4 alternative loci. The different marker techniques detected varying polymorphism, viz, overall SSR: 46%, AFLP: 7%, SRAP: 6% and RGA: 9%, and the markers produced low levels of missing data (4%) and segregation distortion (5%). A significant feature of the linkage map was the low polymorphism found in the D genome, viz, 19% of all mapped DNA markers, 11% of all AFLP markers and 30% of the total genome map distance. A region exhibiting significant segregation distortion was mapped to chromosome 4A and a seedling resistance gene for stem rust (Puccinia graminis f.sp . tritici), Sr26, mapped to chromosome 6A close to three SSR markers. The leaf tip necrosis gene, Ltn, which was also segregating in the population, mapped to chromosome 7D. Protocols for SRAP and RGA were optimised, and SRAP marker use in wheat genetic linkage studies is reported for the first time. The linkage map was used together with growth chamber and replicated field disease scores for QTL mapping. Chromosomes showing statistically significant QTL effects were then targeted with supplementary SSR markers for higher resolution mapping. The quality of disease resistance phenotypic data was confirmed by correlation analysis between the different scorers for reaction type (0.799±0.023) and for transformed percentage leaf area infected (0.942±0.007). Major QTL were consistently identified on chromosome 7D (explaining some 25-48% of the variation) and on chromosome 2B (21-46%) using transformed percentage leaf area infected and transformed reaction type scores (early and final) with interval mapping and modified interval mapping techniques. Both chromosomal regions have previously been identified in other studies and the 7D QTL is thought likely to be the previously mapped APR gene Yr 18. Minor QTL were identified on chromosomes lA and 4A with the QTL on 4A being more prominent at the early field scoring for both score types. A QTL evidently originating from 'Avocet S' was detected under growth chamber conditions but was not detected in the field, suggesting genotype-environment interaction and highlighting the need for modifications of growth chamber conditions to better simulate conditions in the field. The genetic basis of the APR to stripe rust exhibited by 'Kariega' was established by mapping of QTL controlling this trait. The linkage map constructed will be a valuable resource for future genetic studies and provides a facility for mapping other polymorphic traits in the parents of this population with a considerable saving in costs.
AFRIKAANSE OPSOMMING: Streep of geelroes van koring word veroorsaak deur Puccinia striiformis f. sp tritici, en is die eerste keer in 1996 in Suid-Afrika na introduksie van 'n enkele patotipe waargeneem. Twee verdere patotipes is sedertdien in Suid-Afrika gei"dentifiseer. Beheer van die siekte word veral moontlik gemaak deur die gebruik van genetiese volwasseplantweerstand soos gei"dentifiseer in die plaaslike kultivar 'Kariega'. Die doel van hierdie studie was om die genetiese grondslag van die streeproesweerstand te ontrafel ten einde die teling van nuwe bestande kultivars moontlik te maak. 'n Verdubbelde haplo1ede populasie uit die kruising 'Kariega X Avocet S' is aangewend om 'n gedeeltelike koppelingskaart vir die volle stel van 21 koring chromosome saam te stel. Die kaart het uit 208 DNA merkers, nl., 62 SSR, 133 AFLP, 3 RGA, 10 SRAP merkers en 4 ander lokusse bestaan. Totale polimorfisme wat deur die verskillende merkersisteme opgespoor is, was as volg: SSR: 46%, RGA: 9%, AFLP: 7% en SRAP: 6%. Die mate van ontbrekende data was gering (4%) asook die mate van segregasie distorsie (5%) van 'n enkele geval wat op chromosoom 4A gekarteer is. 'n Prominente kenmerk van die koppelingskaart is die relatiewe gebrek aan polimorfiese merkers op die D-genoom, nl., slegs 19% van alle DNA merkers en 11% van alle AFLP merkers wat slegs 30% van die totale genoom kaartafstand bestaan het. Die stamroes (Puccinia graminis f. sp. tritici) saailingweerstandsgeen, Sr26, karteer op chromosoom 6A naby drie SSR merkers. Die geen vir blaartipnekrose, Ltn, karteer op chromosoom 7D. Protokolle vir SRAP en RGA merkers is ge-optimiseer en gebruik van SRAP merkers in koppelings-analise word vir die eerste keer in koring gerapporteer. Die koppelingskaart is in kombinasie met groeikamerdata en gerepliseerde veldproefdata gebruik om die gene (QTL) vir volwasseplant streeproesweerstand te karteer. Chromosome met statisties betekenisvolle QTL is met aanvullende SSR merkers geteiken om die resolusie van kartering verder te verhoog. Die kwaliteit van fenotipiese data, soos in die proewe aangeteken, is bevestig deur korrelasies te bereken tussen lesings geneem deur onafhanklike plantpataloe (0.799 ± 0.023 vir reaksietipe en 0.942 ± 0.007 vir getransformeerde persentasie blaaroppervlakte besmet). Hoofeffek QTL vir die twee maatstawwe van weerstand is deur middel van die metodes van interval QTL kartering en gemodifiseerde interval QTL kartering konsekwent op chromosome 7D (25-48% van variasie verklaar) en 2B (21-46% van variasie verklaar) ge"identifiseer. In vorige studies is aangetoon dat beide chromosome 7D en 2B QTL vir volwasseplant streeproesweerstand dra. Die 7D QTL is waarskynlik die weerstandsgeen, Yr 18. QTL met klein effekte op weerstand is op chromosome lA en 4A ge"identifiseer. Die effek van laasgenoemde geen was meer prominent in die velddata in die vroee datum van weerstandsbeoordeling. Een QTL, afkomstig van 'Avocet S', is slegs onder groeikamertoestande identifiseerbaar. Dit dui op moontlike genotipe-omgewing wisselwerking en beklemtoon die noodsaaklikheid om aanpassings te maak in groeikamertoestande vir beter simulasie van veldproeftoestande. Die genetiese grondslag van volwasseplantweerstand teen streeproes in die kultivar 'Kariega' is deur QTL kartering bepaal. Die 'Kariega X Avocet S' koppelingskaart kan as 'n waardevolle basis dien vir toekomstige genetiese ontledings van ander polimorfiese kenmerke in die populasie.

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39

Daniels, Craig. "Characterisation of proteins involved in Shigella flexneri O-antigen biosynthesis." Title page, abstract and contents only, 1999. http://web4.library.adelaide.edu.au/theses/09PH/09phd186.pdf.

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Corrigenda pasted onto back end-papers. Bibliography: leaves 163-182. Analyses the proteins involved in Shigella flexneri O-antigen biosynthesis at the molecular level in order to gain a more concise understanding of the biosynthesis machinery and how it functions.

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40

Bradley, Shannon. "Polymorphisms in the promoter region of the dopamine transporter : a candidate locus for alcohol abuse." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape2/PQDD_0029/MQ64326.pdf.

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41

Wong, Yee-man Kimmi, and 黃綺雯. "Expression and functional analysis of a mutant sPDZD2 protein." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2005. http://hub.hku.hk/bib/B45010468.

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42

Cheung, Ngai, and 張毅. "Structural and functional characterization of EEN/EndophilinA2, a fusion partner in acute leukemia." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2005. http://hub.hku.hk/bib/B45014760.

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43

Yim, Chi-ho Howard, and 嚴志濠. "Cytokine dysregulation by human immunodeficiency virus-1 transactivating protein." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2006. http://hub.hku.hk/bib/B36987700.

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44

Guo, Dongli, and 郭冬麗. "Expression of Wnt signaling targets and their clinico-pathological significance in colorectal neoplasm: a tissuemicroarray study." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2006. http://hub.hku.hk/bib/B38610541.

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45

Gilbert, Cynthia. "Aspects of community ecology, population growth and genetic structure applied to the conservation of Polemonium pectinatum (Polemoniaceae), a rare and threatened shrub-steppe perennial /." Thesis, Connect to this title online; UW restricted, 1998. http://hdl.handle.net/1773/5535.

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46

Hoyos, Rendón Mary Elizabeth. "From signal to gene induction : molecular aspects of bacterial HR /." free to MU campus, to others for purchase, 1998. http://wwwlib.umi.com/cr/mo/fullcit?p9924888.

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47

Mahfouz, Magdy Mahmoud. "Characterization of the TOR kinase pathway proteins and their possible role in plant cell growth control." Connect to this title online, 2004. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1094666565.

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Thesis (Ph. D.)--Ohio State University, 2004.
Title from first page of PDF file. Document formatted into pages; contains xviii, 192 p.; also includes graphics. Includes bibliographical references (p. 156-192).

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48

Spetz, Carl. "Molecular studies on a complex of potyviruses infecting solanaceous crops, and some specific virus-host interactions /." Uppsala : Dept. of Plant Biology and Forest Genetics, Swedish Univ. of Agricultural Sciences, 2003. http://epsilon.slu.se/a421.pdf.

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49

Liu, Yu, and 劉鈺. "Biological properties of EBV-encoded latent membrane protein 1 in nasopharyngeal epithelial cells." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2000. http://hub.hku.hk/bib/B31242078.

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50

Ross, Ian Lindsay. "Mechanisms of biocontrol of Gaeumannomyces graminis var. tritici by Pseudomonas corrugata strain 2140 : genetic and biochemical aspects." Title page, table of contents and summary only, 1996. http://web4.library.adelaide.edu.au/theses/09PH/09phr824.pdf.

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Bibliography: leaves 207-220. Pseudomonas corrigata strain 2140 (Pc2140), isolated from wheat field soil in Australia, antagonises the take-all fungus, Gaeumannomyces graminis var. tritici (Ggt) in vitro and significantly reduces take-all symptoms on wheat in pot trials. This study investigates the mechanisms by which the biocontrol agent reduces the disease symptoms. Biochemical analysis of metabolites of P. corrugata 2140 reveal a number of compounds potentially antagonistic to Ggt and which may play a role in disease control. These include water-soluble antibiotics, siderophores, proteases, peptides and volatiles including hydrogen cyanide.

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