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Liu Y, Cui X, Yang R, Zhang Y, Xu Y, Liu G, Zhang B, Wang J, Wang X, Zhang W, Chen T, Zhang G. Genomic Insights into the Radiation-Resistant Capability of Sphingomonas qomolangmaensis S5-59 T and Sphingomonas glaciei S8-45 T, Two Novel Bacteria from the North Slope of Mount Everest. Microorganisms 2022; 10:microorganisms10102037. [PMID: 36296313 PMCID: PMC9611098 DOI: 10.3390/microorganisms10102037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2022] [Revised: 10/10/2022] [Accepted: 10/12/2022] [Indexed: 11/07/2022] Open
Abstract
Mount Everest provides natural advantages to finding radiation-resistant extremophiles that are functionally mechanistic and possess commercial significance. (1) Background: Two bacterial strains, designated S5-59T and S8-45T, were isolated from moraine samples collected from the north slope of Mount Everest at altitudes of 5700m and 5100m above sea level. (2) Methods: The present study investigated the polyphasic features and genomic characteristics of S5-59T and S8-45T. (3) Results: The major fatty acids and the predominant respiratory menaquinone of S5-59T and S8-45T were summed as feature 3 (comprising C16:1 ω6c and/or C16:1 ω7c) and ubiquinone-10 (Q-10). Phylogenetic analyses based on 16S rRNA sequences and average nucleotide identity values among these two strains and their reference type strains were below the species demarcation thresholds of 98.65% and 95%. Strains S5-59T and S8-45T harbored great radiation resistance. The genomic analyses showed that DNA damage repair genes, such as mutL, mutS, radA, radC, recF, recN, etc., were present in the S5-59T and S8-45T strains. Additionally, strain S5-59T possessed more genes related to DNA protection proteins. The pan-genome analysis and horizontal gene transfers revealed that strains of Sphingomonas had a consistently homologous genetic evolutionary radiation resistance. Moreover, enzymatic antioxidative proteins also served critical roles in converting ROS into harmless molecules that resulted in resistance to radiation. Further, pigments and carotenoids such as zeaxanthin and alkylresorcinols of the non-enzymatic antioxidative system were also predicted to protect them from radiation. (4) Conclusions: Type strains S5-59T (=JCM 35564T =GDMCC 1.3193T) and S8-45T (=JCM 34749T =GDMCC 1.2715T) represent two novel species of the genus Sphingomonas with the proposed name Sphingomonas qomolangmaensis sp. nov. and Sphingomonas glaciei sp. nov. The type strains, S5-59T and S8-45T, were assessed in a deeply genomic study of their radiation-resistant mechanisms and this thus resulted in a further understanding of their greater potential application for the development of anti-radiation protective drugs.
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Affiliation(s)
- Yang Liu
- State Key Laboratory of Cryospheric Sciences, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China
- University of Chinese Academy of Sciences, No. 19A Yuquan Road, Beijing 100049, China
- Key Laboratory of Extreme Environmental Microbial Resources and Engineering, Lanzhou 730000, China
| | - Xiaowen Cui
- Key Laboratory of Extreme Environmental Microbial Resources and Engineering, Lanzhou 730000, China
- Key Laboratory of Desert and Desertification, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China
- College of Geography and Environment Science, Northwest Normal University, Lanzhou 730070, China
| | - Ruiqi Yang
- College of Urban Environment, Lanzhou City University, Lanzhou 730070, China
| | - Yiyang Zhang
- Key Laboratory of Extreme Environmental Microbial Resources and Engineering, Lanzhou 730000, China
- Key Laboratory of Desert and Desertification, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China
| | - Yeteng Xu
- State Key Laboratory of Cryospheric Sciences, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China
- University of Chinese Academy of Sciences, No. 19A Yuquan Road, Beijing 100049, China
- Key Laboratory of Extreme Environmental Microbial Resources and Engineering, Lanzhou 730000, China
| | - Guangxiu Liu
- Key Laboratory of Extreme Environmental Microbial Resources and Engineering, Lanzhou 730000, China
- Key Laboratory of Desert and Desertification, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China
- School of Stomatology, Lanzhou University, Lanzhou 730000, China
| | - Binglin Zhang
- State Key Laboratory of Cryospheric Sciences, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China
- Key Laboratory of Extreme Environmental Microbial Resources and Engineering, Lanzhou 730000, China
| | - Jinxiu Wang
- Key Laboratory of Extreme Environmental Microbial Resources and Engineering, Lanzhou 730000, China
- Key Laboratory of Desert and Desertification, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China
| | - Xinyue Wang
- University of Chinese Academy of Sciences, No. 19A Yuquan Road, Beijing 100049, China
- Key Laboratory of Extreme Environmental Microbial Resources and Engineering, Lanzhou 730000, China
- Key Laboratory of Desert and Desertification, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China
| | - Wei Zhang
- Key Laboratory of Extreme Environmental Microbial Resources and Engineering, Lanzhou 730000, China
- Key Laboratory of Desert and Desertification, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China
| | - Tuo Chen
- State Key Laboratory of Cryospheric Sciences, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China
- Correspondence: (T.C.); (G.Z.)
| | - Gaosen Zhang
- Key Laboratory of Extreme Environmental Microbial Resources and Engineering, Lanzhou 730000, China
- Key Laboratory of Desert and Desertification, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China
- Correspondence: (T.C.); (G.Z.)
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Rajpurohit YS, Sharma DK, Misra HS. PprA Protein Inhibits DNA Strand Exchange and ATP Hydrolysis of Deinococcus RecA and Regulates the Recombination in Gamma-Irradiated Cells. Front Cell Dev Biol 2021; 9:636178. [PMID: 33959605 PMCID: PMC8093518 DOI: 10.3389/fcell.2021.636178] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Accepted: 03/23/2021] [Indexed: 11/14/2022] Open
Abstract
DrRecA and PprA proteins function are crucial for the extraordinary resistance to γ-radiation and DNA strand break repair in Deinococcus radiodurans. DrRecA mediated homologous recombination help in DNA strand break repair and cell survival, while the PprA protein confers radio-resistance via its roles in DNA repair, genome maintenance, and cell division. Genetically recA and pprA genes interact and constitute an epistatic group however, the mechanism underlying their functional interaction is not clear. Here, we showed the physical and functional interaction of DrRecA and PprA protein both in solution and inside the cells. The absence of the pprA gene increases the recombination frequency in gamma-irradiated D. radiodurans cells and genomic instability in cells growing under normal conditions. PprA negatively regulates the DrRecA functions by inhibiting DrRecA mediated DNA strand exchange and ATPase function in vitro. Furthermore, it is shown that the inhibitory effect of PprA on DrRecA catalyzed DNA strand exchange was not due to sequestration of homologous dsDNA and was dependent on PprA oligomerization and DNA binding property. Together, results suggest that PprA is a new member of recombination mediator proteins (RMPs), and able to regulate the DrRecA function in γ-irradiated cells by protecting the D. radiodurans genome from hyper-recombination and associated negative effects.
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Affiliation(s)
- Yogendra Singh Rajpurohit
- Molecular Biology Division, Bhabha Atomic Research Centre, Mumbai, India.,Homi Bhabha National Institute (DAE- Deemed University), Mumbai, India
| | - Dhirendra Kumar Sharma
- Molecular Biology Division, Bhabha Atomic Research Centre, Mumbai, India.,Homi Bhabha National Institute (DAE- Deemed University), Mumbai, India
| | - Hari S Misra
- Molecular Biology Division, Bhabha Atomic Research Centre, Mumbai, India.,Homi Bhabha National Institute (DAE- Deemed University), Mumbai, India
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Selveshwari S, Lele K, Dey S. Genomic signatures of UV resistance evolution in
Escherichia coli
depend on the growth phase during exposure. J Evol Biol 2021; 34:953-967. [DOI: 10.1111/jeb.13764] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2020] [Revised: 12/27/2020] [Accepted: 01/13/2021] [Indexed: 11/28/2022]
Affiliation(s)
- S Selveshwari
- Population Biology Laboratory, Biology Division Indian Institute of Science Education and Research Pune Maharashtra India
| | - Kasturi Lele
- Population Biology Laboratory, Biology Division Indian Institute of Science Education and Research Pune Maharashtra India
| | - Sutirth Dey
- Population Biology Laboratory, Biology Division Indian Institute of Science Education and Research Pune Maharashtra India
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Draft Genome Sequence of Deinococcus sp. Strain S9, Isolated from Microbial Mat Deposits of Hot Springs Located atop the Himalayan Ranges at Manikaran, India. Microbiol Resour Announc 2019; 8:8/28/e00316-19. [PMID: 31296675 PMCID: PMC6624758 DOI: 10.1128/mra.00316-19] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Here, we present the draft genome sequence of Deinococcus sp. strain S9, a red-pigmented and moderately thermophilic bacterium isolated from microbial mat deposits around the hot springs at Manikaran, Himachal Pradesh, India. The draft genome (3.34 Mb) contains 101 contigs with an average GC content of 66.4%. Here, we present the draft genome sequence of Deinococcus sp. strain S9, a red-pigmented and moderately thermophilic bacterium isolated from microbial mat deposits around the hot springs at Manikaran, Himachal Pradesh, India. The draft genome (3.34 Mb) contains 101 contigs with an average GC content of 66.4%.
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Lim S, Jung JH, Blanchard L, de Groot A. Conservation and diversity of radiation and oxidative stress resistance mechanisms in Deinococcus species. FEMS Microbiol Rev 2019; 43:19-52. [PMID: 30339218 PMCID: PMC6300522 DOI: 10.1093/femsre/fuy037] [Citation(s) in RCA: 120] [Impact Index Per Article: 24.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2018] [Accepted: 10/17/2018] [Indexed: 12/17/2022] Open
Abstract
Deinococcus bacteria are famous for their extreme resistance to ionising radiation and other DNA damage- and oxidative stress-generating agents. More than a hundred genes have been reported to contribute to resistance to radiation, desiccation and/or oxidative stress in Deinococcus radiodurans. These encode proteins involved in DNA repair, oxidative stress defence, regulation and proteins of yet unknown function or with an extracytoplasmic location. Here, we analysed the conservation of radiation resistance-associated proteins in other radiation-resistant Deinococcus species. Strikingly, homologues of dozens of these proteins are absent in one or more Deinococcus species. For example, only a few Deinococcus-specific proteins and radiation resistance-associated regulatory proteins are present in each Deinococcus, notably the metallopeptidase/repressor pair IrrE/DdrO that controls the radiation/desiccation response regulon. Inversely, some Deinococcus species possess proteins that D. radiodurans lacks, including DNA repair proteins consisting of novel domain combinations, translesion polymerases, additional metalloregulators, redox-sensitive regulator SoxR and manganese-containing catalase. Moreover, the comparisons improved the characterisation of several proteins regarding important conserved residues, cellular location and possible protein–protein interactions. This comprehensive analysis indicates not only conservation but also large diversity in the molecular mechanisms involved in radiation resistance even within the Deinococcus genus.
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Affiliation(s)
- Sangyong Lim
- Biotechnology Research Division, Korea Atomic Energy Research Institute, Jeongeup 56212, Republic of Korea
| | - Jong-Hyun Jung
- Biotechnology Research Division, Korea Atomic Energy Research Institute, Jeongeup 56212, Republic of Korea
| | | | - Arjan de Groot
- Aix Marseille Univ, CEA, CNRS, BIAM, Saint Paul-Lez-Durance, France
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6
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Warfel JD, LiCata VJ. Enhanced DNA binding affinity of RecA protein from Deinococcus radiodurans. DNA Repair (Amst) 2015; 31:91-6. [PMID: 26021744 DOI: 10.1016/j.dnarep.2015.05.002] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2015] [Revised: 05/03/2015] [Accepted: 05/04/2015] [Indexed: 11/19/2022]
Abstract
Deinococcus radiodurans (Dr) has a significantly more robust DNA repair response than Escherichia coli (Ec), which helps it survive extremely high doses of ionizing radiation and prolonged periods of desiccation. DrRecA protein plays an essential part in this DNA repair capability. In this study we directly compare the binding of DrRecA and EcRecA to the same set of short, defined single (ss) and double stranded (ds) DNA oligomers. In the absence of cofactors (ATPγS or ADP), DrRecA binds to dsDNA oligomers more than 20 fold tighter than EcRecA, and binds ssDNA up to 9 fold tighter. Binding to dsDNA oligomers in the absence of cofactor presumably predominantly monitors DNA end binding, and thus suggests a significantly higher affinity of DrRecA for ds breaks. Upon addition of ATPγS, this species-specific affinity difference is nearly abolished, as ATPγS significantly decreases the affinity of DrRecA for DNA. Other findings include that: (1) both proteins exhibit a dependence of binding affinity on the length of the ssDNA oligomer, but not the dsDNA oligomer; (2) the salt dependence of binding is modest for both species of RecA, and (3) in the absence of DNA, DrRecA produces significantly shorter and/or fewer free-filaments in solution than does EcRecA. The results suggest intrinsic biothermodynamic properties of DrRecA contribute directly to the more robust DNA repair capabilities of D. radiodurans.
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Affiliation(s)
- Jaycob D Warfel
- Department of Biological Sciences, Louisiana State University, Baton Rouge, LA 70803, USA
| | - Vince J LiCata
- Department of Biological Sciences, Louisiana State University, Baton Rouge, LA 70803, USA.
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Zhang H, Xu Q, Lu M, Xu X, Wang Y, Wang L, Zhao Y, Hua Y. Structural and functional studies of MutS2 from Deinococcus radiodurans. DNA Repair (Amst) 2014; 21:111-9. [DOI: 10.1016/j.dnarep.2014.04.012] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2014] [Revised: 04/18/2014] [Accepted: 04/20/2014] [Indexed: 01/13/2023]
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Abstract
Deinococcus radiodurans is a robust bacterium best known for its capacity to repair massive DNA damage efficiently and accurately. It is extremely resistant to many DNA-damaging agents, including ionizing radiation and UV radiation (100 to 295 nm), desiccation, and mitomycin C, which induce oxidative damage not only to DNA but also to all cellular macromolecules via the production of reactive oxygen species. The extreme resilience of D. radiodurans to oxidative stress is imparted synergistically by an efficient protection of proteins against oxidative stress and an efficient DNA repair mechanism, enhanced by functional redundancies in both systems. D. radiodurans assets for the prevention of and recovery from oxidative stress are extensively reviewed here. Radiation- and desiccation-resistant bacteria such as D. radiodurans have substantially lower protein oxidation levels than do sensitive bacteria but have similar yields of DNA double-strand breaks. These findings challenge the concept of DNA as the primary target of radiation toxicity while advancing protein damage, and the protection of proteins against oxidative damage, as a new paradigm of radiation toxicity and survival. The protection of DNA repair and other proteins against oxidative damage is imparted by enzymatic and nonenzymatic antioxidant defense systems dominated by divalent manganese complexes. Given that oxidative stress caused by the accumulation of reactive oxygen species is associated with aging and cancer, a comprehensive outlook on D. radiodurans strategies of combating oxidative stress may open new avenues for antiaging and anticancer treatments. The study of the antioxidation protection in D. radiodurans is therefore of considerable potential interest for medicine and public health.
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9
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Sghaier H, Satoh K, Narumi I. In silico method to predict functional similarity between two RecA orthologs. JOURNAL OF BIOMOLECULAR SCREENING 2011; 16:457-459. [PMID: 21393627 DOI: 10.1177/1087057111400909] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
RecA is a highly conserved bacterial protein that plays crucial roles in many cellular processes and hence is a potential target in the chemotherapy of bacterial infections. An understanding of the functional similarity between RecA proteins from different bacterial species should yield further insights into the biochemistry of RecA protein, along with the potential for new approaches to facilitate the improvement of RecA-targeted drugs. In this technical note, the authors present an in silico method based on tri-oligonucleotide usage correlations (TOUC) to predict the functional similarity between two RecA orthologs. The TOUC values analyzed in this study are in good agreement with the available experimental results. This method should prove useful in guiding future experimental efforts aimed at furthering our understanding of the biochemistry of RecA proteins and subsequent development of new drugs that modulate RecA biological activities in bacteria.
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Affiliation(s)
- Haïtham Sghaier
- Research Unit UR04CNSTN01 Medical and Agricultural Applications of Nuclear Techniques, National Center for Nuclear Sciences and Technology, Sidi Thabet, Tunisia.
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Repression of recA induction by RecX is independent of the RecA protein in Deinococcus radiodurans. J Bacteriol 2010; 192:3540-4. [PMID: 20418393 DOI: 10.1128/jb.00175-10] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Besides inhibiting RecA activity at the protein level, Deinococcus radiodurans RecX can suppress RecA induction at the transcriptional level. The regulation of RecX on recA induction is independent of RecA activity, and its N terminus is involved in this process.
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11
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Bauermeister A, Bentchikou E, Moeller R, Rettberg P. Roles of PprA, IrrE, and RecA in the resistance of Deinococcus radiodurans to germicidal and environmentally relevant UV radiation. Arch Microbiol 2009; 191:913-8. [DOI: 10.1007/s00203-009-0522-7] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2009] [Revised: 10/06/2009] [Accepted: 10/12/2009] [Indexed: 02/01/2023]
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12
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Weiner A, Zauberman N, Minsky A. Recombinational DNA repair in a cellular context: a search for the homology search. Nat Rev Microbiol 2009; 7:748-55. [PMID: 19756013 DOI: 10.1038/nrmicro2206] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Double-strand DNA breaks (DSBs) are the most detrimental lesion that can be sustained by the genetic complement, and their inaccurate mending can be just as damaging. According to the consensual view, precise DSB repair relies on homologous recombination. Here, we review studies on DNA repair, chromatin diffusion and chromosome confinement, which collectively imply that a genome-wide search for a homologous template, generally thought to be a pivotal stage in all homologous DSB repair pathways, is improbable. The implications of this assertion for the scope and constraints of DSB repair pathways and for the ability of diverse organisms to cope with DNA damage are discussed.
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Affiliation(s)
- Allon Weiner
- Department of Organic Chemistry, The Weizmann Institute of Science, Rehovot 76100, Israel
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Makarova KS, Omelchenko MV, Gaidamakova EK, Matrosova VY, Vasilenko A, Zhai M, Lapidus A, Copeland A, Kim E, Land M, Mavromatis K, Pitluck S, Richardson PM, Detter C, Brettin T, Saunders E, Lai B, Ravel B, Kemner KM, Wolf YI, Sorokin A, Gerasimova AV, Gelfand MS, Fredrickson JK, Koonin EV, Daly MJ. Deinococcus geothermalis: the pool of extreme radiation resistance genes shrinks. PLoS One 2007; 2:e955. [PMID: 17895995 PMCID: PMC1978522 DOI: 10.1371/journal.pone.0000955] [Citation(s) in RCA: 185] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2007] [Accepted: 09/04/2007] [Indexed: 11/19/2022] Open
Abstract
Bacteria of the genus Deinococcus are extremely resistant to ionizing radiation (IR), ultraviolet light (UV) and desiccation. The mesophile Deinococcus radiodurans was the first member of this group whose genome was completely sequenced. Analysis of the genome sequence of D. radiodurans, however, failed to identify unique DNA repair systems. To further delineate the genes underlying the resistance phenotypes, we report the whole-genome sequence of a second Deinococcus species, the thermophile Deinococcus geothermalis, which at its optimal growth temperature is as resistant to IR, UV and desiccation as D. radiodurans, and a comparative analysis of the two Deinococcus genomes. Many D. radiodurans genes previously implicated in resistance, but for which no sensitive phenotype was observed upon disruption, are absent in D. geothermalis. In contrast, most D. radiodurans genes whose mutants displayed a radiation-sensitive phenotype in D. radiodurans are conserved in D. geothermalis. Supporting the existence of a Deinococcus radiation response regulon, a common palindromic DNA motif was identified in a conserved set of genes associated with resistance, and a dedicated transcriptional regulator was predicted. We present the case that these two species evolved essentially the same diverse set of gene families, and that the extreme stress-resistance phenotypes of the Deinococcus lineage emerged progressively by amassing cell-cleaning systems from different sources, but not by acquisition of novel DNA repair systems. Our reconstruction of the genomic evolution of the Deinococcus-Thermus phylum indicates that the corresponding set of enzymes proliferated mainly in the common ancestor of Deinococcus. Results of the comparative analysis weaken the arguments for a role of higher-order chromosome alignment structures in resistance; more clearly define and substantially revise downward the number of uncharacterized genes that might participate in DNA repair and contribute to resistance; and strengthen the case for a role in survival of systems involved in manganese and iron homeostasis.
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Affiliation(s)
- Kira S. Makarova
- National Center for Biotechnology Information, National Library of Medicine, National Institutes of Health, Bethesda, Maryland, United States of America
- * To whom correspondence should be addressed. E-mail: (KM); (MD)
| | - Marina V. Omelchenko
- National Center for Biotechnology Information, National Library of Medicine, National Institutes of Health, Bethesda, Maryland, United States of America
| | - Elena K. Gaidamakova
- Department of Pathology, Uniformed Services University of the Health Sciences (USUHS), Bethesda, Maryland, United States of America
| | - Vera Y. Matrosova
- Department of Pathology, Uniformed Services University of the Health Sciences (USUHS), Bethesda, Maryland, United States of America
| | - Alexander Vasilenko
- Department of Pathology, Uniformed Services University of the Health Sciences (USUHS), Bethesda, Maryland, United States of America
| | - Min Zhai
- Department of Pathology, Uniformed Services University of the Health Sciences (USUHS), Bethesda, Maryland, United States of America
| | - Alla Lapidus
- US Department of Energy, Joint Genome Institute, Walnut Creek, California, United States of America
| | - Alex Copeland
- US Department of Energy, Joint Genome Institute, Walnut Creek, California, United States of America
| | - Edwin Kim
- US Department of Energy, Joint Genome Institute, Walnut Creek, California, United States of America
| | - Miriam Land
- US Department of Energy, Joint Genome Institute, Walnut Creek, California, United States of America
| | - Konstantinos Mavromatis
- US Department of Energy, Joint Genome Institute, Walnut Creek, California, United States of America
| | - Samuel Pitluck
- US Department of Energy, Joint Genome Institute, Walnut Creek, California, United States of America
| | - Paul M. Richardson
- US Department of Energy, Joint Genome Institute, Walnut Creek, California, United States of America
| | - Chris Detter
- US Department of Energy, Joint Genome Institute, Los Alamos National Laboratory, Los Alamos, New Mexico, United States of America
| | - Thomas Brettin
- US Department of Energy, Joint Genome Institute, Los Alamos National Laboratory, Los Alamos, New Mexico, United States of America
| | - Elizabeth Saunders
- US Department of Energy, Joint Genome Institute, Los Alamos National Laboratory, Los Alamos, New Mexico, United States of America
| | - Barry Lai
- Environmental Research Division and Advanced Photon Source, Argonne National Laboratory, Argonne, Illinois, United States of America
| | - Bruce Ravel
- Environmental Research Division and Advanced Photon Source, Argonne National Laboratory, Argonne, Illinois, United States of America
| | - Kenneth M. Kemner
- Environmental Research Division and Advanced Photon Source, Argonne National Laboratory, Argonne, Illinois, United States of America
| | - Yuri I. Wolf
- National Center for Biotechnology Information, National Library of Medicine, National Institutes of Health, Bethesda, Maryland, United States of America
| | - Alexander Sorokin
- National Center for Biotechnology Information, National Library of Medicine, National Institutes of Health, Bethesda, Maryland, United States of America
| | - Anna V. Gerasimova
- Research Institute of Genetics and Selection of Industrial Microorganisms, Moscow, Russia
| | - Mikhail S. Gelfand
- Institute for Information Transmission Problems of RAS, Moscow, Russia
- Faculty of Bioengineering and Bioinformatics, M. V. Lomonosov Moscow State University, Moscow, Russia
| | - James K. Fredrickson
- Biological Sciences Division, Pacific Northwest National Laboratory, Richland, Washington, United States of America
| | - Eugene V. Koonin
- National Center for Biotechnology Information, National Library of Medicine, National Institutes of Health, Bethesda, Maryland, United States of America
| | - Michael J. Daly
- Department of Pathology, Uniformed Services University of the Health Sciences (USUHS), Bethesda, Maryland, United States of America
- * To whom correspondence should be addressed. E-mail: (KM); (MD)
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