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Dissertations / Theses on the topic 'Crenarchaea'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

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1

Pelve, Erik A. "Unique Solutions to Universal Problems : Studies of the Archaeal Cell." Doctoral thesis, Uppsala universitet, Molekylär evolution, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-162886.

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Archaea is one of the three domains of life and studies of archaeal biology are important for understanding of life in extreme environments, fundamental biogeochemical processes, the origin of life, the eukaryotic cell and their own, unique biology. This thesis presents four studies of the archaeal cell, using the extremophilic Sulfolobus and ocean living Nitrosopumilus as model systems. Cell division in crenarchaea is shown to be carried out by a previously unknown system named Cdv (cell division). The system shares homology with the eukaryotic ESCRT-III system which is used for membrane reor

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2

Lacerda, Pereira Campos Peixeiro Nuno Alexandre. "Transcription regulators in crenarchaeal viruses : structure, targets and function." Paris 6, 2011. http://www.theses.fr/2011PA066174.

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Chez les archées, les processus informationnels sont effectués par des protéines spécialisées qui ressemblent à celles des eucaryotes. La machinerie basale de transcription des Archaea a déjà été structurellement et fonctionnellement caractérisée en détail. Cependant, les facteurs de transcription archéens qui se lient à l'ADN et régulent spécifiquement la transcription des gènes ne sont pas bien compris. Au cours de ma thèse, deux régulateurs transcriptionnels viraux ont été caractérisés. L’un, AvtR, est codé par AFV6, un betalipothrixvirus infectant les membres du genre Acidianus. AvtR est u

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3

Wilson, Lora A. "Biochemical characterization of an MCM protein from crenarchaeon aeropyrum pernix /." Connect to full text via ProQuest. IP filtered, 2006.

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Thesis (Ph.D. in Molecular Biology) -- University of Colorado at Denver and Health Sciences Center, 2006.<br>Typescript. Includes bibliographical references (leaves 67-74). Free to UCDHSC affiliates. Online version available via ProQuest Digital Dissertations;

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4

Neiner, Tomasz Paweł [Verfasser], and Sonja-Verena [Akademischer Betreuer] Albers. "Decipering the subunit interaction in the crenarchaeal archaellum / Tomasz Paweł Neiner. Betreuer: Sonja-Verena Albers." Marburg : Philipps-Universität Marburg, 2015. http://d-nb.info/1074639340/34.

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5

Quaiser, Achim. "Molekularbiologische Charakterisierung von nicht-kultivierten Crenarchaeota und Acidobacteria in Metagenombanken aus Bodenproben." Phd thesis, [S.l. : s.n.], 2003. http://elib.tu-darmstadt.de/diss/000368.

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6

Toyama, Danyelle. "Análise da diversidade microbiana aquática em rios e lagos da região amazônica." Universidade Federal de São Carlos, 2012. https://repositorio.ufscar.br/handle/ufscar/5501.

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Made available in DSpace on 2016-06-02T20:21:29Z (GMT). No. of bitstreams: 1 4330.pdf: 9783641 bytes, checksum: d254809e566158ecf10125a852fbdafa (MD5) Previous issue date: 2012-11-07<br>Financiadora de Estudos e Projetos<br>The Amazon region has the largest hydrographic basin on the planet, the one that includes Amazon River, and it also has the largest rainforest in the world. Moreover, it presents a great biological diversity, both related to the fauna and flora, and microbiological. Microorganisms are responsible for most biogeochemical cycles that shape the terrestrial environment and th

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7

Couturier, Mohea. "Les ADN topoisomérases du crenarchaeon hyperthermophile Sulfolobus solfataricus : régulateurs du métabolisme de l'ADN ?" Thesis, Evry-Val d'Essonne, 2013. http://www.theses.fr/2013EVRY0017/document.

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Les ADN topoisomérases sont des enzymes capables de moduler la torsion de la double hélice d’ADN afin de rendre compatible sa topologie avec les différents processus cellulaires impliquant l’ADN. Les hyperthermophiles possèdent au moins une topoisomérase particulière, la reverse gyrase qui est constituée à la fois d’un domaine topoisomérase IA etd’un domaine hélicase de type SF2. Mon sujet de thèse a eu pour objectif de déterminer principalement l’implication des ADN topoisomérases IA dans les différents processus cellulaires de Sulfolobus solfataricus. Ce crenarchaeon hyperthermophile possède

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8

Treusch, Alexander. "Herstellung und Charakterisierung von Umweltgenbanken aus Böden zur Aufklärung von genetischen und physiologischen Eigenschaften nicht-kultivierter Crenarchaeota." [S.l. : s.n.], 2004. http://elib.tu-darmstadt.de/diss/000493.

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9

Rodrigues, Catarina. "Etudes structurales et biophysiques de proteines du virion d' ATV, un bicaudavirus infectant des crenarchees du genre acidianus." Thesis, Aix-Marseille, 2012. http://www.theses.fr/2012AIXM4087.

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Les virus sont les entités biologiques les plus abondantes dans les océans (∼1031 particules). Ils colonisent tous les écosystèmes de la planète y compris les environnements extrêmement acides, chauds et salins, environnements où les archées sont les organismes dominants. Les virus infectant les Crenarchées hyperthermophiles présentent des morphologies exceptionnelles et aussi une très faible proportion de gènes possédant des homologues avec de fonction connue. Parmi ces virus, le virus ATV (Acidianus two-Tailed virus), infecte les archées hyperthermophiles du genre Acidianus. ATV a la p

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10

Wolf, Jacqueline Verfasser], and Dietmar [Akademischer Betreuer] [Schomburg. "Metabolic adaptation of the thermoacidophilic crenarchaeon Sulfolobus solfataricus P2 in response to changing nutrient conditions / Jacqueline Wolf ; Betreuer: Dietmar Schomburg." Braunschweig : Technische Universität Braunschweig, 2017. http://d-nb.info/1175817554/34.

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11

Haferkamp, Patrick [Verfasser], Bettina [Akademischer Betreuer] Siebers, and Daniel [Akademischer Betreuer] Hoffmann. "Biochemical studies of enzymes involved in glycolysis of the thermoacidophilic crenarchaeon Sulfolobus solfataricus / Patrick Haferkamp. Gutachter: Daniel Hoffmann. Betreuer: Bettina Siebers." Duisburg, 2011. http://d-nb.info/1017931879/34.

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12

tachdjian, sabrina. "Functional Genomics of Stress Response in the Hyperthermophilic Crenarchaeon Sufolobus solfataricus and Role of vapBC Toxin-Antitoxin Loci in RNA Management." NCSU, 2007. http://www.lib.ncsu.edu/theses/available/etd-07262007-100850/.

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Functional genomics tools were used to examine the dynamic stress response of the hyperthermophile Sulfolobus solfataricus subjected to thermal and pH shifts relative to growth under normal conditions. Whole genome oligonucleotide microarray analyses revealed substantial transcriptional changes in this crenarcheon upon temperature shifts from 80 to 90°C at pH 4.0, and pH shifts from 4.0 to 2.0 at 80°C. ORFs encoding heat shock proteins, molecular chaperones, and other known stress response elements responded in expected ways. However, genes involved in membrane adaptation, DNA repair mechanism

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13

Cozen, Aaron E. "Molecular maps of archaeal physiology and ecology : a transcriptional map of crenarchaeal respiratory versatility, and quantitative ecology of anaerobic methane-oxidizing communities / by Aaron E. Cozen." Diss., Digital Dissertations Database. Restricted to UC campuses, 2008. http://uclibs.org/PID/11984.

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14

Giles, Teresa Neelima. "Pyruvoyl dependent arginine decarboxylases from Chlamydiae and Crenarchaea." 2008. http://hdl.handle.net/2152/18622.

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Arginine decarboxylase is a key enzyme involved in the polyamine pathway of organisms. Pyruvoyl-dependent arginine decarboxylases are expressed in the form of proenzymes that self-cleave to form N-terminal [beta] and C-terminal [alpha] subunits generating an active pyruvoyl group at the [alpha] terminus. We have identified an archaeal homolog of a pyruvoyl-dependent arginine decarboxylase in Chlamydophila pneumoniae that could play a role in the persistence of the organism in the host. The recombinant enzyme showed highest activity at pH 3.4, which is the lowest optimum pH ever reported for a

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15

Chuang, Chun-Wei, and 莊君威. "Genetic Analysis of Acidianus Dimorpho Virus and Comparative Genomics of Crenarchaeal Viruses." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/32854705235625828901.

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碩士<br>國立陽明大學<br>微生物及免疫學研究所<br>98<br>A hyperthermophilic crenarchaeon was isolated from a hot spring in Geothermal Valley, Beitou, Taiwan. 16S rDNA analysis demonstrated it belonged to the genus Acidianus and was most closely related to A. manzaensis. According to its ability to form biofilm in white float, we thus named it Acidianus albonavi strain TA. A virus isolated from this strain has an unique property of undergoing morphological change outside of its host cell, and therefore we named this novel virus Acidianus dimorpho virus (ADV). In our previous studies, many biological and biochemica

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16

Liang, Jia-Yu, and 梁家瑜. "Isolation of three strains of viruses of crenarchaeota from Geothermal Valley of Bei Tou." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/00291881462141533705.

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碩士<br>國立陽明大學<br>微生物及免疫學研究所<br>97<br>We have identified three novel archaeal viruses from Geothermal Valley of Bei Tou,Taipei,Taiwan using host selection method and plaque assay. By using host selection method, we have isolated a virus of Sulfolobus yangmingensis strain YM (SYV) and a virus of Sulfolobus tokodii strain TW (STV). By using plaque assay, we have isolated a virus and its host. Based on 16S rDNA sequence, we have identified its host to be Acidianus manzaensis strain E. We named this virus of Acidianus manzaensis strain E Acidianus manzaensis virus (AMV).SYV is an oval-shaped virus.

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17

Marrero, Coto Jeannette [Verfasser]. "Transcription Regulation in the hyperthermophilic crenarchaeon Thermoproteus tenax strain Kra1 / vorgelegt von Jeannette Marrero Coto." 2010. http://d-nb.info/1006083200/34.

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18

Quaiser, Achim [Verfasser]. "Molekularbiologische Charakterisierung von nicht-kultivierten Crenarchaeota und Acidobacteria in Metagenombanken aus Bodenproben / vorgelegt von Achim Quaiser." 2003. http://d-nb.info/968777058/34.

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19

Treusch, Alexander. "Herstellung und Charakterisierung von Umweltgenbanken aus Böden zur Aufklärung von genetischen und physiologischen Eigenschaften nicht-kultivierter Crenarchaeota." Phd thesis, 2004. https://tuprints.ulb.tu-darmstadt.de/493/1/Treusch_Diss_1.pdf.

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Mit Hilfe von 16S rDNA Analysen wurde eine neue Gruppe von Archaea, die sogenannten mesophilen Crenarchaeota, in verschiedenen marinen und terrestrischen Ökosystemen nachgewiesen. Da kein Vertreter dieser Gruppe bisher im Labor kultiviert werden konnte, sind diese Organismen noch sehr wenig charakterisiert. In dieser Arbeit wurden Genbanken mit großen klonierten DNA-Fragmenten aus verschiedenen Bodenproben angelegt, um eine Voraussetzung für das Studium der mesophilen Crenarchaeota und anderer nicht-kultivierter Mikroorganismen aus Böden zu schaffen. Dafür wurde hochmolekulare DNA aus einem nä

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20

Tachdjian, Sabrina. "Functional genomics of stress response in the hyperthermophilic crenarchaeon sufolobus solfataricus and role of vapBC toxin-antitoxin loci in RNA management." 2007. http://www.lib.ncsu.edu/theses/available/etd-07262007-100850/unrestricted/etd.pdf.

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21

Treusch, Alexander [Verfasser]. "Herstellung und Charakterisierung von Umweltgenbanken aus Böden zur Aufklärung von genetischen und physiologischen Eigenschaften nicht-kultivierter Crenarchaeota / vorgelegt von Alexander Treusch." 2004. http://d-nb.info/972532366/34.

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