Bibliografias temáticas / Monoderm

Literatura científica selecionada sobre o tema "Monoderm"

Autor: Grafiati

Publicado: 25 de maio de 2024

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Artigos de revistas sobre o assunto "Monoderm"

Sheppard, Devon, Jamie-Lee Berry, Rémi Denise, Eduardo P. C. Rocha, Steve Matthews e Vladimir Pelicic. "The major subunit of widespread competence pili exhibits a novel and conserved type IV pilin fold". Journal of Biological Chemistry 295, n.º 19 (9 de abril de 2020): 6594–604. http://dx.doi.org/10.1074/jbc.ra120.013316.

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Type IV filaments (T4F), which are helical assemblies of type IV pilins, constitute a superfamily of filamentous nanomachines virtually ubiquitous in prokaryotes that mediate a wide variety of functions. The competence (Com) pilus is a widespread T4F, mediating DNA uptake (the first step in natural transformation) in bacteria with one membrane (monoderms), an important mechanism of horizontal gene transfer. Here, we report the results of genomic, phylogenetic, and structural analyses of ComGC, the major pilin subunit of Com pili. By performing a global comparative analysis, we show that Com pili genes are virtually ubiquitous in Bacilli, a major monoderm class of Firmicutes. This also revealed that ComGC displays extensive sequence conservation, defining a monophyletic group among type IV pilins. We further report ComGC solution structures from two naturally competent human pathogens, Streptococcus sanguinis (ComGCSS) and Streptococcus pneumoniae (ComGCSP), revealing that this pilin displays extensive structural conservation. Strikingly, ComGCSS and ComGCSP exhibit a novel type IV pilin fold that is purely helical. Results from homology modeling analyses suggest that the unusual structure of ComGC is compatible with helical filament assembly. Because ComGC displays such a widespread distribution, these results have implications for hundreds of monoderm species.

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Xu, Ling, Dan Naylor, Zhaobin Dong, Tuesday Simmons, Grady Pierroz, Kim K. Hixson, Young-Mo Kim et al. "Drought delays development of the sorghum root microbiome and enriches for monoderm bacteria". Proceedings of the National Academy of Sciences 115, n.º 18 (16 de abril de 2018): E4284—E4293. http://dx.doi.org/10.1073/pnas.1717308115.

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Drought stress is a major obstacle to crop productivity, and the severity and frequency of drought are expected to increase in the coming century. Certain root-associated bacteria have been shown to mitigate the negative effects of drought stress on plant growth, and manipulation of the crop microbiome is an emerging strategy for overcoming drought stress in agricultural systems, yet the effect of drought on the development of the root microbiome is poorly understood. Through 16S rRNA amplicon and metatranscriptome sequencing, as well as root metabolomics, we demonstrate that drought delays the development of the early sorghum root microbiome and causes increased abundance and activity of monoderm bacteria, which lack an outer cell membrane and contain thick cell walls. Our data suggest that altered plant metabolism and increased activity of bacterial ATP-binding cassette (ABC) transporter genes are correlated with these shifts in community composition. Finally, inoculation experiments with monoderm isolates indicate that increased colonization of the root during drought can positively impact plant growth. Collectively, these results demonstrate the role that drought plays in restructuring the root microbiome and highlight the importance of temporal sampling when studying plant-associated microbiomes.

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Léonard, Raphaël R., Eric Sauvage, Valérian Lupo, Amandine Perrin, Damien Sirjacobs, Paulette Charlier, Frédéric Kerff e Denis Baurain. "Was the Last Bacterial Common Ancestor a Monoderm after All?" Genes 13, n.º 2 (18 de fevereiro de 2022): 376. http://dx.doi.org/10.3390/genes13020376.

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The very nature of the last bacterial common ancestor (LBCA), in particular the characteristics of its cell wall, is a critical issue to understand the evolution of life on earth. Although knowledge of the relationships between bacterial phyla has made progress with the advent of phylogenomics, many questions remain, including on the appearance or disappearance of the outer membrane of diderm bacteria (also called Gram-negative bacteria). The phylogenetic transition between monoderm (Gram-positive bacteria) and diderm bacteria, and the associated peptidoglycan expansion or reduction, requires clarification. Herein, using a phylogenomic tree of cultivated and characterized bacteria as an evolutionary framework and a literature review of their cell-wall characteristics, we used Bayesian ancestral state reconstruction to infer the cell-wall architecture of the LBCA. With the same phylogenomic tree, we further revisited the evolution of the division and cell-wall synthesis (dcw) gene cluster using homology- and model-based methods. Finally, extensive similarity searches were carried out to determine the phylogenetic distribution of the genes involved with the biosynthesis of the outer membrane in diderm bacteria. Quite unexpectedly, our analyses suggest that all cultivated and characterized bacteria might have evolved from a common ancestor with a monoderm cell-wall architecture. If true, this would indicate that the appearance of the outer membrane was not a unique event and that selective forces have led to the repeated adoption of such an architecture. Due to the lack of phenotypic information, our methodology cannot be applied to all extant bacteria. Consequently, our conclusion might change once enough information is made available to allow the use of an even more diverse organism selection.

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Pelicic, Vladimir. "Monoderm bacteria: the new frontier for type IV pilus biology". Molecular Microbiology 112, n.º 6 (8 de outubro de 2019): 1674–83. http://dx.doi.org/10.1111/mmi.14397.

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Gupta, Radhey S. "Protein Phylogenies and Signature Sequences: A Reappraisal of Evolutionary Relationships among Archaebacteria, Eubacteria, and Eukaryotes". Microbiology and Molecular Biology Reviews 62, n.º 4 (1 de dezembro de 1998): 1435–91. http://dx.doi.org/10.1128/mmbr.62.4.1435-1491.1998.

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SUMMARY The presence of shared conserved insertion or deletions (indels) in protein sequences is a special type of signature sequence that shows considerable promise for phylogenetic inference. An alternative model of microbial evolution based on the use of indels of conserved proteins and the morphological features of prokaryotic organisms is proposed. In this model, extant archaebacteria and gram-positive bacteria, which have a simple, single-layered cell wall structure, are termed monoderm prokaryotes. They are believed to be descended from the most primitive organisms. Evidence from indels supports the view that the archaebacteria probably evolved from gram-positive bacteria, and I suggest that this evolution occurred in response to antibiotic selection pressures. Evidence is presented that diderm prokaryotes (i.e., gram-negative bacteria), which have a bilayered cell wall, are derived from monoderm prokaryotes. Signature sequences in different proteins provide a means to define a number of different taxa within prokaryotes (namely, low G+C and high G+C gram-positive, Deinococcus-Thermus, cyanobacteria, chlamydia-cytophaga related, and two different groups of Proteobacteria) and to indicate how they evolved from a common ancestor. Based on phylogenetic information from indels in different protein sequences, it is hypothesized that all eukaryotes, including amitochondriate and aplastidic organisms, received major gene contributions from both an archaebacterium and a gram-negative eubacterium. In this model, the ancestral eukaryotic cell is a chimera that resulted from a unique fusion event between the two separate groups of prokaryotes followed by integration of their genomes.

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Forster, Brian M., e Hélène Marquis. "Protein transport across the cell wall of monoderm Gram-positive bacteria". Molecular Microbiology 84, n.º 3 (4 de abril de 2012): 405–13. http://dx.doi.org/10.1111/j.1365-2958.2012.08040.x.

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Taib, Najwa, Daniela Megrian, Jerzy Witwinowski, Panagiotis Adam, Daniel Poppleton, Guillaume Borrel, Christophe Beloin e Simonetta Gribaldo. "Genome-wide analysis of the Firmicutes illuminates the diderm/monoderm transition". Nature Ecology & Evolution 4, n.º 12 (19 de outubro de 2020): 1661–72. http://dx.doi.org/10.1038/s41559-020-01299-7.

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Luhur, Johana, Helena Chan, Benson Kachappilly, Ahmed Mohamed, Cécile Morlot, Milena Awad, Dena Lyras et al. "A dynamic, ring-forming MucB / RseB-like protein influences spore shape in Bacillus subtilis". PLOS Genetics 16, n.º 12 (14 de dezembro de 2020): e1009246. http://dx.doi.org/10.1371/journal.pgen.1009246.

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How organisms develop into specific shapes is a central question in biology. The maintenance of bacterial shape is connected to the assembly and remodelling of the cell envelope. In endospore-forming bacteria, the pre-spore compartment (the forespore) undergoes morphological changes that result in a spore of defined shape, with a complex, multi-layered cell envelope. However, the mechanisms that govern spore shape remain poorly understood. Here, using a combination of fluorescence microscopy, quantitative image analysis, molecular genetics and transmission electron microscopy, we show that SsdC (formerly YdcC), a poorly-characterized new member of the MucB / RseB family of proteins that bind lipopolysaccharide in diderm bacteria, influences spore shape in the monoderm Bacillus subtilis. Sporulating cells lacking SsdC fail to adopt the typical oblong shape of wild-type forespores and are instead rounder. 2D and 3D-fluorescence microscopy suggest that SsdC forms a discontinuous, dynamic ring-like structure in the peripheral membrane of the mother cell, near the mother cell proximal pole of the forespore. A synthetic sporulation screen identified genetic relationships between ssdC and genes involved in the assembly of the spore coat. Phenotypic characterization of these mutants revealed that spore shape, and SsdC localization, depend on the coat basement layer proteins SpoVM and SpoIVA, the encasement protein SpoVID and the inner coat protein SafA. Importantly, we found that the ΔssdC mutant produces spores with an abnormal-looking cortex, and abolishing cortex synthesis in the mutant largely suppresses its shape defects. Thus, SsdC appears to play a role in the proper assembly of the spore cortex, through connections to the spore coat. Collectively, our data suggest functional diversification of the MucB / RseB protein domain between diderm and monoderm bacteria and identify SsdC as an important factor in spore shape development.

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Zámocký, Marcel, Stefan Hofbauer, Thomas Gabler e Paul G. Furtmüller. "The Molecular Evolution, Structure, and Function of Coproporphyrinogen Oxidase and Protoporphyrinogen Oxidase in Prokaryotes". Biology 12, n.º 12 (15 de dezembro de 2023): 1527. http://dx.doi.org/10.3390/biology12121527.

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Coproporphyrinogen oxidase (CgoX) and protoporphyrinogen oxidase (PgoX) catalyze the oxidation of the flexible cyclic tetrapyrrole of porphyrinogen compounds into fully conjugated, planar macrocyclic porphyrin compounds during heme biosynthesis. These enzymes are activated via different pathways. CgoX oxidizes coproporphyrinogen III to coproporphyrin III in the coproporphyrin-dependent pathway, whereas PgoX oxidizes protoporphyrinogen IX to protoporphyrin IX in the penultimate step of the protoporphyrin-dependent pathway. The phylogenetic analysis presented herein demonstrates a clear differentiation between the two enzyme classes, as evidenced by the clustering of sequences in distinct clades, and it shows that, at the origin of porphyrinogen-type oxidase evolution, PgoXs from cyanobacteria were found, which were noticeably separated from descendant PgoX representatives of Deltaproteobacteria and all later PgoX variants, leading to many eukaryotic clades. CgoX sequences originating from the monoderm Actinomycetota and Bacillota were well separated from the predecessor clades containing PgoX types and represent a peculiar type of gene speciation. The structural similarities and differences between these two oxidases are discussed based on their protein sequence alignment and a structural comparison.

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Renier, Sandra, Pierre Micheau, Régine Talon, Michel Hébraud e Mickaël Desvaux. "Subcellular Localization of Extracytoplasmic Proteins in Monoderm Bacteria: Rational Secretomics-Based Strategy for Genomic and Proteomic Analyses". PLoS ONE 7, n.º 8 (9 de agosto de 2012): e42982. http://dx.doi.org/10.1371/journal.pone.0042982.

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Mais fontes

Teses / dissertações sobre o assunto "Monoderm"

Megrian, Nuñez Daniela. "Phylogenomic approaches to uncover the diversity and evolution of the bacterial cell envelope". Electronic Thesis or Diss., Sorbonne université, 2020. http://www.theses.fr/2020SORUS349.

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L’enveloppe bactérienne est l’une des structures cellulaires les plus anciennes et les plus fondamentales. Toutefois, de nombreux aspects concernant sa diversité et son histoire évolutive sont encore inconnus. Dans cette thèse, j’ai profité du nombre croissant de génomes disponibles dans les bases de données publiques, afin de mener une analyse de phylogénomique et de génomique comparative à une large échelle évolutive. Les deux objectifs de ce travail doctoral étaient (i) d’identifier de nouvelles lignées didermes au sein des Firmicutes pour éclairer la transition monoderme/diderme, et (ii) d’élucider l’histoire évolutive de l’enveloppe cellulaire chez les bactéries et d’en déduire la nature chez le LBCA.En résumé, les résultats que j'ai obtenus au cours de cette thèse fournissent une avancée significative dans notre compréhension de la diversité et de l'évolution de l'enveloppe cellulaire, et sur l'une des transitions majeures de l'histoire des bactéries, celle entre les monodermes et les didermes
The bacterial envelope is one of the oldest and most fundamental cellular structures. Yet, many aspects of its diversity and evolutionary history are unknown. In this thesis I have taken advantage of the large available genomic data to investigate the issue through a large-scale phylogenomic and comparative genomic analyses at the level of Bacteria. The two goals of this doctoral work were (i) to identify putative new diderm lineages in the Firmicutes to illuminate the monoderm/diderm transition, and (ii) to elucidate the evolutionary history of the cell envelope in Bacteria and infer its nature in the LBCA. To sum up, the results I obtained during this thesis provide a timely and significant advancement to our understanding of the diversity and evolution of the cell envelope, and on one of the major transitions in the history of Bacteria, that between monoderms and diderms

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Uberg, Inger Øvrebø. "Det tidløse kjærlighetsbrevet : En studie av de intuitive kommunikasjonsmulighetene i et utvalg monodier fra tidlig italiensk barokk, gjennom arbeid med historisk gestikk". Thesis, Kungl. Musikhögskolan, Institutionen för klassisk musik, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:kmh:diva-2873.

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Publikasjonen skildrer et kunstnerisk prosjekt som tar utgangspunkt i verkene "Se i languidi miei sguardi" av Claudio Monteverdi (1567-1643), "Vanne, o carta amorosa" av Girolamo Frescobaldi (1583-1643) og "Scrivete, occhi dolenti" (1605-1674) av Giacomo Carissimi. Samtlige verk er for solo stemme og basso continuo. Prosjektet problematiserer og undersøker mulighetene denne musikken har til å kommunisere så direkte som mulig med et moderne, ikke italiensk-språklig publikum. Den praktiske delen av undersøkelsen utgjøres av en workshop i historisk gestikk med en ekspert på emnet, Deda Cristina Colonna. En sentral del av diskusjonen spinner rundt sangerens bevissthet rundt scenisk framtreden og nonverbalt uttrykk, og synet på disse aspektene ved scenisk vokalkunst i den tidlige barokkens Italia.

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Maslowiec, Anna. "Sonorism and the Polish Avant-Garde 1958-1966". Phd thesis, Sydney Conservatorium of Music, 2008. http://hdl.handle.net/2123/8205.

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Livros sobre o assunto "Monoderm"

Jonas, Bruno. Wirklich wahr: Ein kabarattisches Monodram. München: Droemer Knaur, 1991.

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Nyczaj, Stanisław (1943- ). Posł, ed. Miara milości: Opowiadania i monodram. Kielce: Oficyna Wydawnicza "Ston 2", 2008.

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Winterreise: Wilhelm Müller entdeckt das lyrische Monodram. Berlin: Lit, 2014.

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Das Monodram bei Schönberg, Poulenc und Dusarpin. Berlin: Arkadien-Verl, 2009.

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Couvreur, Thomas L. P. Monograph of the syncarpous African genera Isolona and Monodora (Annonaceae). Ann Arbor: American Society of Plant Taxonomists, 2009.

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Walser, Martin. Nero lässt grüssen, oder, Selbstporträt des Künstlers als Kaiser: Ein Monodram ; Alexander und Annette : ein innerer Monolog. 2^a ed. Eggingen: K. Isele, 1989.

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Moore, Ian. Monodreme. Lulu Press, Inc., 2009.

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Lamb, Tom. Manly Monodes. Fiducia Press, 1998.

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Capítulos de livros sobre o assunto "Monoderm"

Ayeleso, Ademola Olabode, Olagunju Doris Imuetiyanosa, Samuel Chibueze Nzekwe e Oluokun Oluboade Oyedapo. "Antioxidant, Anti-Inflammatory, and Thrombolytic Activities of Monodora tenuifolia, Benth Seed Extract". In Curative and Preventive Properties of Medicinal Plants, 293–315. New York: Apple Academic Press, 2023. http://dx.doi.org/10.1201/9781003328544-21.

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"Goethes Monodram „Proserpina“ als Totenklage für seine Schwester". In Schicksal und Dichtung, 75–104. Berlin, Boston: De Gruyter, 1985. http://dx.doi.org/10.1515/9783110867428-006.

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Trabalhos de conferências sobre o assunto "Monoderm"

Zhang, Renrui, Han Qiu, Tai Wang, Ziyu Guo, Ziteng Cui, Yu Qiao, Hongsheng Li e Peng Gao. "MonoDETR: Depth-guided Transformer for Monocular 3D Object Detection". In 2023 IEEE/CVF International Conference on Computer Vision (ICCV). IEEE, 2023. http://dx.doi.org/10.1109/iccv51070.2023.00840.

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Huang, Kuan-Chih, Tsung-Han Wu, Hung-Ting Su e Winston H. Hsu. "MonoDTR: Monocular 3D Object Detection with Depth-Aware Transformer". In 2022 IEEE/CVF Conference on Computer Vision and Pattern Recognition (CVPR). IEEE, 2022. http://dx.doi.org/10.1109/cvpr52688.2022.00398.

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A Folarin Alonge e Edidiong J Udofot. "Some Physical Properties of African Nutmeg (Monodara Myristica) Seed Relevant to its Processing". In 2012 Dallas, Texas, July 29 - August 1, 2012. St. Joseph, MI: American Society of Agricultural and Biological Engineers, 2012. http://dx.doi.org/10.13031/2013.42199.

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Qian, Haiyang, Ning Li, Huiyu Zhou, Ning Yuan e Zhengran Zhang. "MonoDet-K: A Monocular 3D Object Detector on BEV with Keypoint Regression". In 2023 4th International Conference on Big Data, Artificial Intelligence and Internet of Things Engineering (ICBAIE). IEEE, 2023. http://dx.doi.org/10.1109/icbaie59714.2023.10281218.

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Boutzios, G., S. Pittokopitou, E. Koukoulioti, P. Alexandrou, K. Giannakopoulos e A. Lagkadas. "EP729 A rare form of ovarianserouscystadenoma with monodermal teratoma in a 53 year old patient". In ESGO Annual Meeting Abstracts. BMJ Publishing Group Ltd, 2019. http://dx.doi.org/10.1136/ijgc-2019-esgo.782.

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