Relevant bibliographies by topics / Histidine

Academic literature on the topic 'Histidine'

Author: Grafiati
Published: 4 June 2021
Last updated: 31 July 2024

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Journal articles on the topic "Histidine"

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Nair, C. P. P., and E. L. Robert Stokstad. "Effect of Hormones and Protein Level on Induction of Enzymes Involved in Histidine Degradation and Folate Metabolism." Pteridines 2, no. 3 (September 1990): 183–87. http://dx.doi.org/10.1515/pteridines.1990.2.3.183.

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Summary The effects of the hormones thyroxine, glucagon and hydrocortisone, and of protein level on hepatic histidase, urocanase, and certain folate enzymes were studied in rats. Hypothyroidism, induced either by feeding thiouracil or by thyroidectomy, increased histidase, urocanase, and the folate dependent enzyme formiminotransferase, and increased histidine metabolism as measured by oxidation of the 2-ring carbon of histidine to carbon dioxide. Hyperthyroidism, produced by feeding thyroid powder, decreased histidine oxidation and liver levels of this enzyme. Glucagon and hydrocortisone increased histidine oxidation and increased levels of histidase, urocanase and formiminotransferase. Elevated levels of casein and soy protein produced four to eight fold increases in histidase and urocanase, and 50% increases in formiminotransferase. Thus, increases in histidase and urocanase involved in the formation of formiminoglutamic acid (FIGlu) were accompanied by increases in the FIGlu metabolizing enzyme formiminotransferase.
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Akirthasary, Desty. "REVIEW ARTIKEL : ENZIM L-HISTIDIN DEKARBOKSILASE DAN MEKANISME PENGHAMBATAN." Unesa Journal of Chemistry 10, no. 2 (May 30, 2021): 147–57. http://dx.doi.org/10.26740/ujc.v10n2.p147-157.

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Abstrak. Enzim L-Histidin dekarboksilase merupakan suatu enzim yang digunakan untuk mengkatalis histidin dalam membentuk histamin. Enzim L-Histidin dekarboksilase dapat dimanfaatkan sebagai antialergi, antihistamin serta menjadi komponen dalam memahami mekanisme histamin. Enzim L-histidin dekarboksilase dapat diperoleh dari asam amino yang ada didalam daging, keju dan ikan. Namun sumber utama yaitu ikan busuk disebabkan aktivitas mikroba diatas 4oC dengan waktu cukup lama, kemudian enzim L-Histidin dekarboksilase yang ada dalam ikan akan disintesis menghasilkan histamin. Enzim L-Histidin dekarboksilase terdapat dalam bakteri mesofilik yang tumbuh pada suhu 30oC-37oC. Bakteri tersebut antara lain Morganella morganii, Klebsiella pneumonia, Hafnia alvei, Citrobacter freundii, Clostridium perfringens, Enterobacter aerogenes, Vibrio alginolyticus, dan Proteus sp yang dapat memberikan pengaruh negatif terhadap kesehatan antara lain diare akibat keracunan, sakit kepala, hipotensi, pruritus dan tubuh akan terlihat memerah. Sehingga diperlukan adanya penghambatan aktivitas enzim L- Histidin dekarboksilase. Penghambatan dapat dilakukan untuk mengontrol terbentuknya histamin dengan cara penambahan senyawa yang akan merusak dinding sel suatu bakteri yang mengakibatkan terhentinya fungsi kerja enzim tersebut. Senyawa penghambat yang dapat digunakan dapat berupa senyawa kimiawi seperti asam benzoat atau dapat juga menggunakan senyawa alami yang memiliki kandungan flavonoid, saponin, terpenoid, dan tanin yang akan mencegah pertumbuhan bakteri. Senyawa penghambat tersebut banyak ditemukan pada Teh Hijau, asam jawa, bawang merah atau tanaman rempah lainnya. Kata Kunci : Enzim L-Histidin dekarboksilase, Histidin, Histamin, Abstract. The enzyme L-Histidine decarboxylase is an enzyme used to catalyze histidine to form histamine. The enzyme L-Histidine decarboxylase can be used as antiallergy, antihistamine and a component in understanding the mechanism of histamine. The enzyme L-histidine decarboxylase can be obtained from amino acids present in meat, cheese and fish. However, the main source is rotten fish due to microbial activity above 4oC for a long time, then the L-Histidine decarboxylase enzyme in fish will be synthesized to produce histamine. L-Histidine decarboxylase enzyme is present in mesophilic bacteria that grow at temperatures of 30oC-37oC. These bacteria include Morganella morganii, Klebsiella pneumonia, Hafnia alvei, Citrobacter freundii, Clostridium perfringens, Enterobacter aerogenes, Vibrio alginolyticus, and Proteus sp which can have negative effects on health, including diarrhea due to poisoning, headaches, hypotension, pruritus and the body. looks red. So that it is necessary to inhibit the activity of the enzyme L-Histidine decarboxylase. Inhibition can be done to control the formation of histamine by adding compounds that will damage the cell wall of a bacteria which results in the cessation of the enzyme function. Inhibition compounds that can be used can be chemical compounds such as benzoic acid or you can also use natural compounds that contain flavonoids, saponins, terpenoids, and tannins that will prevent bacterial growth. These inhibiting compounds are found in green tea, tamarind, onions or other spices. Keyword : Decarboxylated L-Histidine Enxymes, HIstidin, Histamine.
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Borisova-, Galina, and Olga Bessonova-. "HISTIDINE BIOTRANSFORMATION MEDIATED BY L-HISTIDINE-AMMONIA-LYASE." Foods and Raw Materials 1, no. 2 (December 20, 2013): 37–41. http://dx.doi.org/10.12737/2052.

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He, Jiaxi, Songhui Xu, and A. James Mixson. "The Multifaceted Histidine-Based Carriers for Nucleic Acid Delivery: Advances and Challenges." Pharmaceutics 12, no. 8 (August 14, 2020): 774. http://dx.doi.org/10.3390/pharmaceutics12080774.

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Histidines incorporated into carriers of nucleic acids may enhance the extracellular stability of the nanoparticle, yet aid in the intracellular disruption of the nanoparticle, enabling the release of the nucleic acid. Moreover, protonation of histidines in the endosomes may result in endosomal swelling with subsequent lysis. These properties of histidine are based on its five-member imidazole ring in which the two nitrogen atoms may form hydrogen bonds or act as a base in acidic environments. A wide variety of carriers have integrated histidines or histidine-rich domains, which include peptides, polyethylenimine, polysaccharides, platform delivery systems, viral phages, mesoporous silica particles, and liposomes. Histidine-rich carriers have played key roles in our understanding of the stability of nanocarriers and the escape of the nucleic acids from endosomes. These carriers show great promise and offer marked potential in delivering plasmids, siRNA, and mRNA to their intracellular targets.
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Yang, S. H., C. H. Wu, and W. Y. Lin. "Chemical modification of aminopeptidase isolated from Pronase." Biochemical Journal 302, no. 2 (September 1, 1994): 595–600. http://dx.doi.org/10.1042/bj3020595.

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Chemical modification of aminopeptidase from pronase has revealed two important histidines in enzyme catalysis. In the absence of metal ions, modification of the readily-modified histidine (pKa 6.9 +/- 0.5) results in a drastic loss of activity, indicating that this residue is indispensible for enzyme activity. In the presence of CaCl2, the modified enzyme still retains approx. 60% of the activity, whereas modification of another histidine (pKa 7.7 +/- 0.2) leads to a dramatic loss of activity. In fact, the enzyme with the first histidine being modified is active only in the presence of metal ions. Moreover, modification of the second histidine is prevented by the presence of Ca(II). These results indicate that the second histidine is serving as a ligand for Ca(II) and the bound Ca(II) is directly involved in enzyme catalysis. The c.d. spectra of the modified and unmodified enzymes in the absence or presence of CaCl2 are all very similar, indicating that no gross conformational changes in protein occur upon modification or by the presence of Ca(II). Modification of both histidines is prevented by the presence of a competitive inhibitor, suggesting that they are located in the active centre. Modification of 11 amino groups, two tyrosines, or four arginines causes no appreciable inactivation of the enzyme, indicating that these residues are not directly involved in enzyme catalysis.
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Brosnan, Margaret E., and John T. Brosnan. "Histidine Metabolism and Function." Journal of Nutrition 150, Supplement_1 (October 1, 2020): 2570S—2575S. http://dx.doi.org/10.1093/jn/nxaa079.

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ABSTRACT Histidine is a dietary essential amino acid because it cannot be synthesized in humans. The WHO/FAO requirement for adults for histidine is 10 mg · kg body weight−1 · d−1. Histidine is required for synthesis of proteins. It plays particularly important roles in the active site of enzymes, such as serine proteases (e.g., trypsin) where it is a member of the catalytic triad. Excess histidine may be converted to trans-urocanate by histidine ammonia lyase (histidase) in liver and skin. UV light in skin converts the trans form to cis-urocanate which plays an important protective role in skin. Liver is capable of complete catabolism of histidine by a pathway which requires folic acid for the last step, in which glutamate formiminotransferase converts the intermediate N-formiminoglutamate to glutamate, 5,10 methenyl-tetrahydrofolate, and ammonia. Inborn errors have been recognized in all of the catabolic enzymes of histidine. Histidine is required as a precursor of carnosine in human muscle and parts of the brain where carnosine appears to play an important role as a buffer and antioxidant. It is synthesized in the tissue by carnosine synthase from histidine and β-alanine, at the expense of ATP hydrolysis. Histidine can be decarboxylated to histamine by histidine decarboxylase. This reaction occurs in the enterochromaffin-like cells of the stomach, in the mast cells of the immune system, and in various regions of the brain where histamine may serve as a neurotransmitter.
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Van Dam, ME, GE Wuenschell, and FH Arnold. "Metal affinity precipitation of proteins." Biotechnology and Applied Biochemistry 11, no. 5 (October 1989): 492–502. http://dx.doi.org/10.1111/j.1470-8744.1989.tb00071.x.

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Proteins containing multiple surface‐accessible histidine residues can be precipitated using small quantities of bis‐copper chelates. The chelates serve to crosslink the proteins, presumably via the accessible histidines, leading to the formation of large, insoluble complexes. When excess copper chelate is used to carry out the precipitation, the resulting precipitate has a stoichiometry of 1:1 copper:accessible histidine. The precipitation is analogous to antibody‐antigen precipitin reactions and can be described qualitatively using simple equilibrium theory developed for those systems. Human hemoglobin contains a large number of surface histidines and is efficiently precipitated by the copper salt CuSO4 as well as by bis‐copper chelates. Sperm whale myoglobin contains many fewer surface histidines and is precipitated only by the bis‐chelates. The effects of the number of accessible histidines on the protein, the chain length separating the two chelates, and the pH on the precipitation reaction have been investigated.
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Muller, Ludovic, Shelley N. Jackson, and Amina S. Woods. "Histidine, the less interactive cousin of arginine." European Journal of Mass Spectrometry 25, no. 2 (April 2019): 212–18. http://dx.doi.org/10.1177/1469066718791793.

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Electrostatic interactions are one of the main factors influencing biomolecular conformation. The formation of noncovalent complexes by electrostatic interactions is governed by certain amino acid residues and post-translational modifications. It has been demonstrated that adjacent arginine forms noncovalent complex with phosphate; however, histidine noncovalent complexes have rarely been investigated. In the present work, we compare the interaction between basic epitopes (NLRRITRVN, SHHGLHSTPD) and diverse acidic and aromatic-rich peptides using both MALDI and ESI Mass spectrometry. We show that adjacent histidines can also form stable noncovalent bonds and that those bonds are probably formed by a salt bridge between the phosphate or the acid residues and the histidines. However, noncovalent complexes with the arginine epitopes form more readily and are stronger than those with histidine-containing epitopes.
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Ehrenstorfer-Schäfers, Eva, Helmut Hartl, and Wolfgang Beck. "Bildung wasserlöslicher Histidin-Platin- Komplexe aus metallischem Platin und Histidin / Formation of Water Soluble Histidine Platinum Complexes from Metallic Platinum and Histidine." Zeitschrift für Naturforschung B 43, no. 4 (April 1, 1988): 499–500. http://dx.doi.org/10.1515/znb-1988-0421.

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AbstractMetallic Platinum dissolves under oxygen atmosphere in aqueous histidine solution. About 0.1 to 0.3 μmol of a water soluble histidine platinum complex per ml solution have been found by atomic absorption spectroscopy.
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Meena, Chhuttan L., Shubdha Ingole, Satyendra Rajpoot, Avinash Thakur, Prajwal P. Nandekar, Abhay T. Sangamwar, Shyam S. Sharma, and Rahul Jain. "Discovery of a low affinity thyrotropin-releasing hormone (TRH)-like peptide that exhibits potent inhibition of scopolamine-induced memory impairment in mice." RSC Advances 5, no. 70 (2015): 56872–84. http://dx.doi.org/10.1039/c5ra06935a.

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Dissertations / Theses on the topic "Histidine"

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Quezada, Cindy Maria Richards John Gray Harry B. "Histidine phosphorylation in bacterial chemotaxis /." Diss., Pasadena, Calif. : California Institute of Technology, 2003. http://resolver.caltech.edu/CaltechETD:etd-05302003-145522.

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Kumar, Amit. "The enantioselective synthesis of histidine analogues." Thesis, Queen Mary, University of London, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.417598.

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Wang, Liang. "Structural characterisation of Histidine Kinase 2." Thesis, Queen Mary, University of London, 2018. http://qmro.qmul.ac.uk/xmlui/handle/123456789/33933.

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Two-component systems (TCS) are the predominant signal transduction pathways in prokaryotes, being present also in eukaryotic organisms, such as algae, fungi and yeast, and higher plants. TCSs play an important role in environmental signal perception and response, essentially implementing adaptation to the surrounding environment. Histidine Kinase 2 (Hik2) in cyanobacteria is a typical sensor histidine kinase, one component of a TCS, and has been identified to be a homologue protein of Arabidopsis Chloroplast Sensor Kinase (CSK). Previous research has elucidated Hik2 to regulate photosynthetic gene transcription with two response regulators, Rre1 and RppA via phosphorylation. A typical histidine kinase contains a variable sensor domain and a conserved kinase domain. It usually functions as a homodimer. This thesis describes the structural characterisation of Hik2, probing particularly its discovered oligomeric states. Results obtained from size exclusion chromatography, native-PAGE, chemical cross-linking analyses and mass spectrometry, amongst others, have shown a variety of Hik2 structural populations exist, further validated by negative stain transmission electron microscopy coupled to single particle analysis. Hik2 protein exists predominantly as a hexamer in low salt conditions, and adding NaCl dissociates hexamers into tetramers, critical for the autophosphorylation activity of Hik2. Thus, a model is proposed for the constitution change of Hik2 oligomers when salt concentration differs. In addition, the sensor domain is typically responsible for detecting environmental input, however, it is not yet clear how Hik2 and CSK sense signals. In this thesis, the structures of Hik2 and CSK sensor domains were analysed and discussed, to aid our understanding of their mechanism of signal perception and transduction.
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Lindgren, Karin E. "The Histidine-rich Glycoprotein in Reproduction." Doctoral thesis, Uppsala universitet, Institutionen för kvinnors och barns hälsa, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-300769.

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Infertility affects 15% of reproductive-aged couples. The milieu surrounding the growing embryo is of outmost importance, and should be optimised during in vitro fertilisation (IVF). Many biological processes, such as angiogenesis, coagulation, and immune processes need to be well regulated for a pregnancy to occur and progress normally. Histidine-rich glycoprotein (HRG) is a plasma protein that regulates components of these systems by building complexes with various ligands. A single nucleotide polymorphism (SNP) in HRG, denoted HRG C633T, seem to be of importance for IVF treatment outcomes. The aim of this thesis was to further investigate the proposed human fertility effects of the HRG C633T SNP. According to the findings of this thesis, the HRG C633T genotype is associated with primary recurrent miscarriage. Male HRG C633T genotype is associated with semen characteristics in infertile men, and pregnancy rates following IVF. However, the distribution of the HRG C633T SNP does not differ between infertile and fertile couples. We further examined the role of the region surrounding the HRG C633T SNP for regulation of endometrial angiogenesis and human embryo development. The region affects primary endometrial endothelial cell migration, proliferation and tube-formation in vitro but does not appear to affect human embryo development. No effect of the HRG peptide was noted on the secretome of human embryos. However, early embryos secrete proteins into the surrounding culture media and the level of secretion of VEGF-A, IL-6, EMMPRIN and PlGF is greater in embryos of higher developmental stages. In conclusion, the HRG C633T genotype appears to play a role only if infertility is established. The region surrounding HRG C633T SNP is of relevance in vitro for regulation of human endometrial endothelial cell angiogenesis. To predict which embryos to transfer in IVF, we have highlighted a number of proteins of interest for further investigation.
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Hungaro, Jean Bernard. "Etude physico-chimique de la chélation du cuivre (II) par des acides aminés (histidine et ses dérivés 1 et 3 méthylés)." Paris 7, 1992. http://www.theses.fr/1992PA077322.

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DUMAS, FRANCOISE. "Excretion urinaire de la 3 methyl histidine chez l'enfant : application a l'etat nutritionnel des mucoviscidoses : etude preliminaire." Lyon 1, 1988. http://www.theses.fr/1988LYO1M279.

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Martel, Alexandre. "Caractérisation de la position 48 du récepteur phoQ de Salmonella enterica serovar typhimurium." Sherbrooke : Université de Sherbrooke, 2001.

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Montagne, Martin. "Caractérisation des activités catalytiques du récepteur histidine kinase phoQ de Salmonella enterica serovar Typhimurium et des mutants de la position 179." Sherbrooke : Université de Sherbrooke, 2001.

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Souza, Elaine Costa [UNESP]. "Análise da expressão gênica global de mutantes de Xanthomonas citri subsp. citri." Universidade Estadual Paulista (UNESP), 2010. http://hdl.handle.net/11449/102819.

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Made available in DSpace on 2014-06-11T19:32:16Z (GMT). No. of bitstreams: 0 Previous issue date: 2010-07-08Bitstream added on 2014-06-13T21:03:52Z : No. of bitstreams: 1 souza_ec_dr_jabo.pdf: 821266 bytes, checksum: 46390da0d02b9c37aa41e4af297432aa (MD5)
Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
O cancro cítrico é uma das principais doenças da cultura do citros, provocando lesões nas folhas, ramos e frutos, tendo como consequência a queda dos frutos e folhas, o que leva à perdas significativas na produção. A partir do sequenciamento completo do genoma da bactéria gram-negativa Xanthomonas citri subsp. citri (Xac), agente causal do cancro cítrico, abriu-se a possibilidade da utilização de estratégias de análise genômica funcional no estudo da função de genes da bactéria relacionados com a infecção na planta e com o desenvolvimento da doença. Uma das estratégias utilizadas foi a obtenção de mutantes de Xac contendo genes relacionados à patogenicidade e virulência interrompidos pelo método de mutagênese insercional aleatória utilizando o transposon Tn5 (LAIA et al., 2009). No presente trabalho a técnica de microarranjos de DNA foi utilizada para avaliar a expressão global de genes de dois mutantes de Xac 72 h após a infecção in planta. Em um dos mutantes (8B7) o gene interrompido foi o xrvA, um regulador de virulência, e no outro mutante (18D6) o gene interrompido codifica uma histidina quinase híbrida sensora que faz parte de um sistema de transdução de sinal de dois componentes. Os resultados das hibridizações revelaram um total de 553 genes diferencialmente expressos para os dois mutantes estudados quando comparado com o genótipo selvagem (Xac 306), sendo 323 no mutante 8B7 e 230 no mutante 18D6. Esses genes foram divididos em diferentes categorias funcionais e uma análise funcional comparativa revelou que eles podem desempenhar um papel importante no processo de patogenicidade
Citrus canker is a major disease affecting citrus crops worldwide, causing lesions on leaves, branches and fruits that results in the falling of fruit and leaves, leading to significant losses in orange production. The complete genome sequencing of Xanthomonas citri subsp. citri (Xac), a Gram-negative bacteria and the causal agent of citrus canker, allowed the possibility of using functional genomic strategies to study the function of genes related to plant infection and disease development in this bacteria. One strategy was to produce mutants for phatogenicity and virulence genes by random insertional mutagenesis using Tn5 Transposon (LAIA et al., 2009). In the present work DNA microarray analysis was used to evaluate the global gene expression profile of two Xac mutants after 72 hours of plant infection. One mutant (8B7) carry a mutation in the xrvA gene (XAC1495), a virulence regulator, and the other (18D6) carry a mutation in a hybrid histidine quinase sensor of a two-component signal transduction system. The results revealed a total of 553 differentially expressed genes for the two mutant strains compared with Xac wild type, with 323 in the mutant 8B7, and 230 in the mutant 18D6. These genes were allocated into several functional categories and a comparative functional analysis showed that they can play an important role in the pathogenicity and virulence of Xac
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Armstrong, Ellen Pauline. "Peptide histidine isoleucine : radioimmunoassay and immunohistochemical studies." Thesis, Queen's University Belfast, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.335983.

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Books on the topic "Histidine"

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Eyers, Claire E., ed. Histidine Phosphorylation. New York, NY: Springer US, 2020. http://dx.doi.org/10.1007/978-1-4939-9884-5.

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Masayori, Inouye, and Dutta Rinku, eds. Histidine kinases in signal transduction. Amsterdam: Academic Press, 2003.

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Vaziri, Peyman. Histidine regulation of food and water intake in rats. Ottawa: National Library of Canada, 1995.

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Wroblewski, Karol. Characterization of the molecular nature of the interaction of human salivary histatins (histidine-rich proteins) with tannins. Ottawa: National Library of Canada, 2000.

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Schwede, Torsten. Röntgenstrukturanalyse der Histidase sowie Kristallisation der Urocanase aus Pseudomonas putida. [s.l.]: [s.n.], 1999.

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Histidine Kinases in Signal Transduction. Elsevier, 2003. http://dx.doi.org/10.1016/b978-0-12-372484-7.x5000-0.

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Sheiner, Jamie Brenda. Food intake suppression by histidine. 1985.

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Eyers, Claire E. Histidine Phosphorylation: Methods and Protocols. Springer, 2020.

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Inouye, Masayori, and Rinku Dutta. Histidine Kinases in Signal Transduction. Elsevier Science & Technology Books, 2002.

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Nazir, Misbah, Atya Hassan, and Muhammad Ali Minhas. Electrochemical study of Copper-Histidine complex. LAP Lambert Academic Publishing, 2015.

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Book chapters on the topic "Histidine"

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Cleaves, Henderson James. "Histidine." In Encyclopedia of Astrobiology, 1. Berlin, Heidelberg: Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/978-3-642-27833-4_728-4.

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Cleaves, Henderson James. "Histidine." In Encyclopedia of Astrobiology, 1112–13. Berlin, Heidelberg: Springer Berlin Heidelberg, 2015. http://dx.doi.org/10.1007/978-3-662-44185-5_728.

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Cleaves, Henderson James. "Histidine." In Encyclopedia of Astrobiology, 758–59. Berlin, Heidelberg: Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-11274-4_728.

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Cleaves, Henderson James. "Histidine." In Encyclopedia of Astrobiology, 1. Berlin, Heidelberg: Springer Berlin Heidelberg, 2022. http://dx.doi.org/10.1007/978-3-642-27833-4_728-5.

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Cleaves, Henderson James. "Histidine." In Encyclopedia of Astrobiology, 1338. Berlin, Heidelberg: Springer Berlin Heidelberg, 2023. http://dx.doi.org/10.1007/978-3-662-65093-6_728.

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Young, Ian S. "Histidine and Histidine-Like Alkaloids." In From Biosynthesis to Total Synthesis, 473–501. Hoboken, NJ: John Wiley & Sons, Inc, 2016. http://dx.doi.org/10.1002/9781118754085.ch13.

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Schomburg, Dietmar, and Margit Salzmann. "Histidine decarboxylase." In Enzyme Handbook 1, 83–87. Berlin, Heidelberg: Springer Berlin Heidelberg, 1990. http://dx.doi.org/10.1007/978-3-642-86605-0_20.

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Panula, P. "3 Histidine." In Handbook of Neurochemistry and Molecular Neurobiology, 47–58. Boston, MA: Springer US, 2007. http://dx.doi.org/10.1007/978-0-387-30373-4_3.

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Bährle-Rapp, Marina. "Histidine Hydrochloride." In Springer Lexikon Kosmetik und Körperpflege, 259. Berlin, Heidelberg: Springer Berlin Heidelberg, 2007. http://dx.doi.org/10.1007/978-3-540-71095-0_4776.

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Schomburg, Dietmar, and Dörte Stephan. "Histidine transaminase." In Enzyme Handbook 13, 373–75. Berlin, Heidelberg: Springer Berlin Heidelberg, 1997. http://dx.doi.org/10.1007/978-3-642-59176-1_74.

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Conference papers on the topic "Histidine"

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Mathavan, T., S. Umapathy, I. Suganya, and M. A. Jothirajan. "Investigations on polyaniline-histidine composites." In SOLID STATE PHYSICS: Proceedings of the 56th DAE Solid State Physics Symposium 2011. AIP, 2012. http://dx.doi.org/10.1063/1.4710503.

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Dovbeshko, G. I. "L-histidine energetic spectrum in submillimeter range." In International Conference on Millimeter and Submillimeter Waves and Applications 1994. SPIE, 1994. http://dx.doi.org/10.1117/12.2303185.

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Hausmann, Michael, Heiko Lentfer, Dietmar Wolf, Eckhard Bauer, Klaus Aldinger, Karl-Otto Greulich, and Christoph G. Cremer. "Biological dosimetry after H2O2/L-histidine treatment." In BiOS Europe '97, edited by Francesco Baldini, Nathan I. Croitoru, Mark R. Dickinson, Martin Frenz, Mitsunobu Miyagi, Riccardo Pratesi, and Stefan Seeger. SPIE, 1998. http://dx.doi.org/10.1117/12.301128.

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Pant, Amba Datt, Yoko Sugawara, Eiko Torikai, Wataru Higemoto, Koichiro Shimomura, and Kanetada Nagamine. "A First-Principles Study of Muonium in Histidine." In Proceedings of the 3rd International Symposium of Quantum Beam Science at Ibaraki University "Quantum Beam Science in Biology and Soft Materials (ISQBSS2018)". Journal of the Physical Society of Japan, 2019. http://dx.doi.org/10.7566/jpscp.25.011012.

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Boukaoud, Abdelali, Younes Chiba, Samiya Aissou, Mourad Dehbaoui, and Nouara Guessabi. "Structural, electronic and vibrational properties of DL-histidine." In 2018 International Conference on Applied Smart Systems (ICASS). IEEE, 2018. http://dx.doi.org/10.1109/icass.2018.8651979.

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Mathavan, T., C. V. Kanimozhi, M. A. Jothi Rajan, S. Umapathy, M. Kumara Dhas, and A. Milton Franklin Benial. "Spectroscopic studies on pure and histidine functionalized MWCNTs." In PROCEEDING OF INTERNATIONAL CONFERENCE ON RECENT TRENDS IN APPLIED PHYSICS AND MATERIAL SCIENCE: RAM 2013. AIP, 2013. http://dx.doi.org/10.1063/1.4810109.

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Wang, Weining, Weiwei Yue, Yuanbo Li, and Haitao Yan. "Torsional vibrational spectra of histidine in THz range." In Fourth International Conference on Photonics and Imaging in Biology and Medicine, edited by Kexin Xu, Qingming Luo, Da Xing, Alexander V. Priezzhev, and Valery V. Tuchin. SPIE, 2006. http://dx.doi.org/10.1117/12.710684.

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Yang, Ronghua, Kemin Wang, Dan Xiao, Liping Long, Xiaohai Yang, and Weihong Tan. "Bis-porphyrin-based selective fluorescence recognition for histidine." In International Conference on Sensing units and Sensor Technology, edited by Yikai Zhou and Shunqing Xu. SPIE, 2001. http://dx.doi.org/10.1117/12.440177.

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Campbell, Blair F., and Joel M. Friedman. "Protein Dynamics and Reactivity in Hemoglobin: Transient Raman and Picosecond Raman Hole Burning Studies." In International Conference on Ultrafast Phenomena. Washington, D.C.: Optica Publishing Group, 1986. http://dx.doi.org/10.1364/up.1986.wa5.

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The picosecond geminate recombination of oxygen in hemoglobins is highly responsive to the tertiary structure of the heme environment.1 In particular, the geminate yield changes in response to changes in the heme-proximal histidine geometry as reflected in the frequency of the iron-proximal histidine stretching mode (ν (Fe-His)) . Non-exponential kinetics for the ps geminate recombination are observed.1 Since ν(Fe-His) is the same at 30 ps and 10 ns subsequent to photodissociation, the non-exponential kinetics cannot originate from a subns structural diffusion involving the heme histidine geometry. One alternative explanation is that the dynamics associated with conformational heterogeneity are sufficiently slow that the initial geminate recombination reflects preferential binding to specific substate conformations. Because of the suggested relationship between ν(Fe-His) and the innermost barrier controlling geminate rebinding,3 we have monitored the lineshape of ν(Fe-His) of the surviving population of the deoxyheme photoproduct during the picosecond geminate rebinding in order to determine whether this Raman band is inhomogeneous broadened with respect to functional selectivity. Our preliminary results reveal only a monotonic decrease in the intensity without any change in lineshape. Thus it appears that for ligand binding dynamics that there is no indication of conformational heterogeneity on the 10's of ps time scale at least for the heme-histidine geometry. A similar study at cryogenic temperatures is currently in progress.
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Kondo, Makoto, Haruki Ishikawa, and Yasutoshi Kasahara. "INFRARED SPECTROSCOPY OF HYDROGEN-BONDED CLUSTERS OF PROTONATED HISTIDINE." In 70th International Symposium on Molecular Spectroscopy. Urbana, Illinois: University of Illinois at Urbana-Champaign, 2015. http://dx.doi.org/10.15278/isms.2015.wh06.

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Reports on the topic "Histidine"

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Singh, Anjali. Amino Acids: Building Blocks of Proteins. ConductScience, June 2022. http://dx.doi.org/10.55157/cs20220612.

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Amino acids are essential organic compounds serving as protein building blocks. Recognized for their biological roles, they underpin proteins' structure and interactions. Classified by polarity and nutritional necessity, essential amino acids, not synthesized by the body, include histidine, leucine, lysine, and more, while non-essential ones are produced internally. These molecules exhibit diverse functions, from neurotransmitter precursor synthesis to immune support. Industries leverage amino acids in animal feed, artificial sweeteners, flavor enhancers, and drug manufacturing, highlighting their vital role in various applications beyond biological systems.
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Stewart, D. L., E. J. Sass, L. K. Fritz, and L. B. Sasser. Toxicology Studies on Lewisite and Sulfur Mustard Agents: Mutagenicity of Lewisite in the Salmonella Histidine Reversion Assay Final Report. Office of Scientific and Technical Information (OSTI), July 1989. http://dx.doi.org/10.2172/1086508.

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Stewart, D. L., E. J. Sass, L. K. Fritz, and L. B. Sasser. Toxicology Studies on Lewisite and Sulfur Mustard Agents: Mutagenicity of Sulfur Mustard in the Salmonella Histidine Reversion Assay Final Report. Office of Scientific and Technical Information (OSTI), July 1989. http://dx.doi.org/10.2172/1086509.

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Li, Li, Joseph Burger, Nurit Katzir, Yaakov Tadmor, Ari Schaffer, and Zhangjun Fei. Characterization of the Or regulatory network in melon for carotenoid biofortification in food crops. United States Department of Agriculture, April 2015. http://dx.doi.org/10.32747/2015.7594408.bard.

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The general goals of the BARD research grant US-4423-11 are to understand how Or regulates carotenoid accumulation and to reveal novel strategies for breeding agricultural crops with enhanced β-carotene level. The original objectives are: 1) to identify the genes and proteins in the Or regulatory network in melon; 2) to genetically and molecularly characterize the candidate genes; and 3) to define genetic and functional allelic variation of these genes in a representative germplasm collection of the C. melo species. Or was found by the US group to causes provitamin A accumulation in chromoplasts in cauliflower. Preliminary genetic study from the Israeli group revealed that the melon Or gene (CmOr) completely co-segregated with fruit flesh color in a segregating mapping population and in a wide melon germplasm collection, which set the stage for the funded research. Major conclusions and achievements include: 1). CmOris proved to be the gene that controls melon fruit flesh color and represents the previously described gflocus in melon. 2). Genetic and molecular analyses of CmOridentify and confirm a single SNP that is responsible for the orange and non-orange phenotypes in melon fruit. 3). Alteration of the evolutionarily conserved arginine in an OR protein to both histidine or alanine greatly enhances its ability to promote carotenoid accumulation. 4). OR promotes massive carotenoid accumulation due to its dual functions in regulating both chromoplast biogenesis and carotenoid biosynthesis. 5). A bulk segregant transcriptome (BSRseq) analysis identifies a list of genes associated with the CmOrregulatory network. 6). BSRseq is proved to be an effective approach for gene discovery. 7). Screening of an EMS mutation library identifies a low β mutant, which contains low level of carotenoids due to a mutation in CmOrto produce a truncated form of OR protein. 8). low β exhibits lower germination rate and slow growth under salt stress condition. 9). Postharvest storage of fruit enhances carotenoid accumulation, which is associated with chromoplast development. Our research uncovers the molecular mechanisms underlying the Or-regulated high level of carotenoid accumulation via regulating carotenoidbiosynthetic capacity and storage sink strength. The findings provide mechanistic insights into how carotenoid accumulation is controlled in plants. Our research also provides general and reliable molecular markers for melon-breeding programs to select orange varieties, and offers effective genetic tools for pro-vitamin A enrichment in other important crops via the rapidly developed genome editing technology. The newly discovered low β mutant could lead to a better understanding of the Or gene function and its association with stress response, which may explain the high conservation of the Or gene among various plant species.
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Droby, Samir, Joseph W. Eckert, Shulamit Manulis, and Rajesh K. Mehra. Ecology, Population Dynamics and Genetic Diversity of Epiphytic Yeast Antagonists of Postharvest Diseases of Fruits. United States Department of Agriculture, October 1994. http://dx.doi.org/10.32747/1994.7568777.bard.

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One of the emerging technologies is the use of microbial agents for the control of postharvest diseases of fruits and vegetables. A number of antagonistic microorganisms have been discovered which have the potential to effectively control postharvest diseases. Some of this technology has been patented and commercial products such as AspireTM (Ecogen Corporatin, Langhorne, PA, USA), Biosave 10TM and Biosave 11TM (Ecoscience Inc., Worchester, MA, USA) have been registered for commercial use. The principal investigator of this project was involved in developing the yeast-based biofungicide-AspireTM and testing its efficacy under commercial conditions. This research project was initiated to fill the gap between the knowledge available on development and commercial implementation of yeast biocontrol agents and basic understanding of various aspects related to introducing yeast antagonists to fruit surfaces, along with verification of population genetics. The main objectives of this study were: Study ecology, population dynamics and genetic diversity of the yeast antagonists Candida guilliermondii, C. oleophila, and Debaryomyces hansenii, and study the effect of preharvest application of the yeast antagonist C. oleophila naturally occurring epiphytic microbial population and on the development of postharvest diseases of citrus fruit during storage. Our findings, which were detailed in several publications, have shown that an epiphytic yeast population of grapefruit able to grow under high osmotic conditions and a wide range of temperatures was isolated and characterized for its biocontrol activity against green mold decay caused by Penicillium digitatum. Techniques based on random amplified polymorphic DNA (RAPD) and arbitrary primed polymerase chain reaction (ap-PCR), as well as homologies between sequences of the rDNA internal transcribed spacers (ITS) and 5.8S gene, were used to characterize the composition of the yeast population and to determine the genetic relationship among predominant yeast species. Epiphytic yeasts exhibiting the highest biocontrol activity against P. digitatum on grapefruit were identified as Candida guilliermondii, C. oleophila, C. sake, and Debaryomyces hansenii, while C. guilliermondii was the most predominant species. RAPD and ap-PCR analysis of the osmotolerant yeast population showed two different, major groups. The sequences of the ITS regions and the 5.8S gene of the yeast isolates, previously identified as belonging to different species, were found to be identical. Following the need to develop a genetically marked strain of the yeast C. oleophila, to be used in population dynamics studies, a transformation system for the yeast was developed. Histidine auxotrophy of C. oloephila produced using ethyl methanesulfonate were transformed with plasmids containing HIS3, HIS4 and HIS5 genes from Saccharomyces cerevisiae. In one mutant histidin auxotrophy was complemented by the HIS5 gene of S. cerevisiae is functionally homologous to the HIS5 gene in V. oleophila. Southern blot analysis showed that the plasmid containing the S. cerevisiae HIS5 gene was integrated at a different location every C. oleophila HIS+ transformant. There were no detectable physiological differences between C. oleophila strain I-182 and the transformants. The biological control ability of C. oleophila was not affected by the transformation. A genetically marked (with b-glucuronidase gene) transformant of C. oleophila colonized wounds on orange fruits and its population increased under field conditions. Effect of preharvest application of the yeast C. oleophila on population dynamics of epiphytic microbial population on wounded and unwounded grapefruit surface in the orchard and after harvest was also studied. In addition, the effect of preharvest application of the yeast C. oleophila on the development of postharvest decay was evaluated. Population studies conducted in the orchard showed that in control, non-treated fruit, colonization of wounded and unwounded grapefruit surface by naturally occurring filamentous fungi did not vary throughout the incubation period on the tree. On the other hand, colonization of intact and wounded fruit surface by naturally occurring yeasts was different. Yeasts colonized wounded surface rapidly and increased in numbers to about two orders of magnitude as compared to unwounded surface. On fruit treated with the yeast and kept on the tree, a different picture of fungal and yeast population had emerged. The detected fungal population on the yeast-treated intact surface was dramatically reduced and in treated wounds no fungi was detected. Yeast population on intact surface was relatively high immediately after the application of AspireTM and decreased to than 70% of that detected initially. In wounds, yeast population increased from 2.5 x 104 to about 4x106 after 72 hours of incubation at 20oC. Results of tests conducted to evaluate the effect of preharvest application of AspireTM on the development of postharvest decay indicated the validity of the approach.
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Barefoot, Susan F., Bonita A. Glatz, Nathan Gollop, and Thomas A. Hughes. Bacteriocin Markers for Propionibacteria Gene Transfer Systems. United States Department of Agriculture, June 2000. http://dx.doi.org/10.32747/2000.7573993.bard.

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The antibotulinal baceriocins, propionicin PLG-1 and jenseniin G., were the first to be identified, purified and characterized for the dairy propionibaceria and are produced by Propionibacterium thoenii P127 and P. thoenii/jensenii P126, respectively. Objectives of this project were to (a) produce polyclonal antibodies for detection, comparison and monitoring of propionicin PLG-1; (b) identify, clone and characterize the propionicin PLG-1 (plg-1) and jenseniin G (jnG) genes; and (3) develop gene transfer systems for dairy propionibacteria using them as models. Polyclonal antibodies for detection, comparison and monitoring of propionicin PLG-1 were produced in rabbits. Anti-PLG-1 antiserum had high titers (256,000 to 512,000), neutralized PLG-1 activity, and detected purified PLG-1 at 0.10 mg/ml (indirect ELISA) and 0.033 mg/ml (competitive indirect ELISA). Thirty-nine of 158 strains (most P. thoenii or P. jensenii) yielded cross-reacting material; four strains of P. thoenii, including two previously unidentified bacteriocin producers, showed biological activity. Eight propionicin-negative P127 mutants produced neither ELISA response nor biological activity. Western blot analyses of supernates detected a PLG-1 band at 9.1 kDa and two additional protein bands with apparent molecular weights of 16.2 and 27.5 kDa. PLG-1 polyclonal antibodies were used for detection of jenseniin G. PLG-1 antibodies neutralized jenseniin G activity and detected a jenseniin G-sized, 3.5 kDa peptide. Preliminary immunoprecipitation of crude preparations with PLG-1 antibodies yielded three proteins including an active 3-4 kDa band. Propionicin PLG-1 antibodies were used to screen a P. jensenii/thoenii P126 genomic expression library. Complete sequencing of a cloned insert identified by PLG-1 antibodies revealed a putative response regulator, transport protein, transmembrane protein and an open reading frame (ORF) potentially encoding jenseniin G. PCR cloning of the putative plg-1 gene yielded a 1,100 bp fragment with a 355 bp ORF encoding 118 amino acids; the deduced N-terminus was similar to the known PLG-1 N-terminus. The 118 amino acid sequence deduced from the putative plg-1 gene was larger than PLG-1 possibly due to post-translational processing. The product of the putative plg-1 gene had a calculated molecular weight of 12.8 kDa, a pI of 11.7, 14 negatively charged residues (Asp+Glu) and 24 positively charged residues (Arg+Lys). The putative plg-1 gene was expressed as an inducible fusion protein with a six-histidine residue tag. Metal affinity chromatography of the fused protein yielded a homogeneous product. The fused purified protein sequence matched the deduced putative plg-1 gene sequence. The data preliminarily suggest that both the plg-1 and jnG genes have been identified and cloned. Demonstrating that antibodies can be produced for propionicin PLG-1 and that those antibodies can be used to detect, monitor and compare activity throughout growth and purification was an important step towards monitoring PLG-1 concentrations in food systems. The unexpected but fortunate cross-reactivity of PLG-1 antibodies with jenseniin G led to selective recovery of jenseniin G by immunoprecipitation. Further refinement of this separation technique could lead to powerful affinity methods for rapid, specific separation of the two bacteriocins and thus facilitate their availability for industrial or pharmaceutical uses. Preliminary identification of genes encoding the two dairy propionibacteria bacteriocins must be confirmed; further analysis will provide means for understanding how they work, for increasing their production and for manipulating the peptides to increase their target species. Further development of these systems would contribute to basic knowledge about dairy propionibacteria and has potential for improving other industrially significant characteristics.
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