Deinococcus Radiodurans
Mostrando 1-12 de 95 artigos, teses e dissertações.
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1. Characteristics of dr1790 disruptant and its functional analysis in Deinococcus radiodurans
Deinococcus radiodurans (DR) is an extremophile that is well known for its resistance to radiation, oxidants and desiccation. The gene dr1790 of D. radiodurans was predicted to encode a yellow-related protein. The primary objective of the present study was to characterize the biological function of the DR1790 protein, which is a member of the ancient yellow/
Braz. J. Microbiol.. Publicado em: 2015-06
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2. Biodegradation of naphthalene and anthracene by chemo-tactically active rhizobacteria of populus deltoides
Several naphthalene and anthracene degrading bacteria were isolated from rhizosphere of Populus deltoides, which were growing in non-contaminated soil. Among these, four isolates, i.e. Kurthia sp., Micrococcus varians, Deinococcus radiodurans and Bacillus circulans utilized chrysene, benzene, toluene and xylene, in addition to anthracene and naphthalene. Kur
Brazilian Journal of Microbiology. Publicado em: 2010-12
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3. Astrophysical and Astrobiological effects of Gamma-Ray Bursts / Efeitos astrofísicos e astrobiológicos de Gamma-Ray Bursts
O presente trabalho tem o objetivo principal de compreender os possíveis efeitos da radiação energética de um evento de Gamma-Ray Burst (GRB) sobre o meio interestelar no entorno de seu local de geração e em planetas possivelmente iluminados. Gamma-Ray Bursts foram detectados pela primeira vez nos anos 60 e rapidamente atraíram a atenção da comunida
Publicado em: 2009
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4. Duplication insertion of drug resistance determinants in the radioresistant bacterium Deinococcus radiodurans.
Escherichia coli drug resistance plasmids were introduced into Deinococcus radiodurans by cloning D. radiodurans DNA into the plasmids prior to transformation. The plasmids were integrated into the chromosome of the transformants and flanked by a direct repeat of the cloned D. radiodurans segment. The plasmid and one copy of the flanking chromosomal segment
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5. High-resolution structure of the antibiotic resistance protein NimA from Deinococcus radiodurans
In this paper, the 1.2 Å atomic resolution crystal structure of the 5-nitroimidazole antibiotic resistance protein NimA from Deinococcus radiodurans (DrNimA) is presented.
International Union of Crystallography.
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6. Glucosyl diglyceride lipid structures in Deinococcus radiodurans.
The structures of two lipids from the radiation-resistant bacterium Deinococcus radiodurans are reported here: 1,2-diacyl-3-alpha-glucopyranosyl-glycerol and 3-O-[6'-O-(1",2"-diacyl- 3"-phosphoglycerol)-alpha-glucopyranosyl]-1,2-diacylglycerol. These lipids are strikingly different from previously characterized polar lipids from this organism, in that they a
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7. The LexA Protein from Deinococcus radiodurans Is Not Involved in RecA Induction following γ Irradiation
The involvement of LexA in induction of RecA was investigated in Deinococcus radiodurans. As in the wild-type strain, an increase in RecA protein synthesis following γ irradiation was detected in a lexA disruptant, indicating that LexA is not involved in the induction of RecA in D. radiodurans.
American Society for Microbiology.
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8. Radioresistance of Deinococcus radiodurans: functions necessary to survive ionizing radiation are also necessary to survive prolonged desiccation.
Forty-one ionizing radiation-sensitive strains of Deinococcus radiodurans were evaluated for their ability to survive 6 weeks of desiccation. All exhibited a substantial loss of viability upon rehydration compared with wild-type D. radiodurans. Examination of chromosomal DNA from desiccated cultures revealed a time-dependent increase in DNA damage, as measur
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9. Genome of the Extremely Radiation-Resistant Bacterium Deinococcus radiodurans Viewed from the Perspective of Comparative Genomics
The bacterium Deinococcus radiodurans shows remarkable resistance to a range of damage caused by ionizing radiation, desiccation, UV radiation, oxidizing agents, and electrophilic mutagens. D. radiodurans is best known for its extreme resistance to ionizing radiation; not only can it grow continuously in the presence of chronic radiation (6 kilorads/h), but
American Society for Microbiology.
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10. Crystal structure of the Deinococcus radiodurans single-stranded DNA-binding protein suggests a mechanism for coping with DNA damage
Single-stranded DNA (ssDNA)-binding (SSB) proteins are uniformly required to bind and protect single-stranded intermediates in DNA metabolic pathways. All bacterial and eukaryotic SSB proteins studied to date oligomerize to assemble four copies of a conserved domain, called an oligonucleotide/oligosaccharide-binding (OB) fold, that cooperate in nonspecific s
National Academy of Sciences.
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11. Genetic characterization of forty ionizing radiation-sensitive strains of Deinococcus radiodurans: linkage information from transformation.
Natural transformation was used to help define a collection of ionizing radiation-sensitive strains of Deinococcus radiodurans. Three putative rec mutations were identified, as were three pol alleles. Forty of the ionizing radiation-sensitive strains were placed into 16 linkage groups, and evidence obtained indicates that each linkage group consists of a clu
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12. Characterization of the Minimal Replicon of a Cryptic Deinococcus radiodurans SARK Plasmid and Development of Versatile Escherichia coli-D. radiodurans Shuttle Vectors
The nucleotide sequence of a 12-kb fragment of the cryptic Deinococcus radiodurans SARK plasmid pUE10 was determined, in order to direct the development of small, versatile cloning systems for Deinococcus. Annotation of the sequence revealed 12 possible open reading frames. Among these are the repU and resU genes, the predicted products of which share simila
American Society for Microbiology.