Manganese binding to antioxidant peptides involved in extreme radiation resistance in Deinococcus radiodurans

2016 ◽  
Vol 164 ◽  
pp. 49-58 ◽  
Author(s):  
Massimiliano Peana ◽  
Serenella Medici ◽  
Heather A. Pangburn ◽  
Thomas J. Lamkin ◽  
Malgorzata Ostrowska ◽  
...  
Keyword(s):  
Radiation Resistance ◽  
Deinococcus Radiodurans ◽  
Antioxidant Peptides

An exonuclease I-sensitive DNA repair pathway in Deinococcus radiodurans: a major determinant of radiation resistance

2006 ◽  
Vol 59 (4) ◽  
pp. 1308-1316 ◽  
Author(s):  
Hari S. Misra ◽  
Nivedita P. Khairnar ◽  
Swathi Kota ◽  
Smriti Shrivastava ◽  
Vasudha P. Joshi ◽  
...  
Keyword(s):  
Dna Repair ◽  
Radiation Resistance ◽  
Deinococcus Radiodurans ◽  
Major Determinant ◽  
Repair Pathway ◽  
Exonuclease I

scholarly journals Coexisting properties of thermostability and ultraviolet radiation resistance in the main S-layer complex of Deinococcus radiodurans

2018 ◽  
Vol 17 (1) ◽  
pp. 81-88 ◽  
Author(s):  
Domenica Farci ◽  
Chavdar Slavov ◽  
Dario Piano
Keyword(s):  
Ultraviolet Radiation ◽  
Radiation Resistance ◽  
Deinococcus Radiodurans ◽  
Environmental Stresses

Deinococcus radiodurans is well known for its unusual resistance to different environmental stresses.

Involvement of recF in 254 nm Ultraviolet Radiation Resistance in Deinococcus radiodurans and Escherichia coli

2010 ◽  
Vol 61 (5) ◽  
pp. 458-464 ◽  
Author(s):  
Xiaosong Chang ◽  
Lan Yang ◽  
Qing Zhao ◽  
Wenjuan Fu ◽  
Hao Chen ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Ultraviolet Radiation ◽  
Radiation Resistance ◽  
Deinococcus Radiodurans

scholarly journals Overlapping oriC and centromere-like functions in secondary genome replicons determine their maintenance independent of chromosome I in Deinococcus radiodurans

2020 ◽  
Author(s):  
Ganesh K Maurya ◽  
Hari S. Misra
Keyword(s):  
Radiation Resistance ◽  
Copy Number ◽  
Deinococcus Radiodurans ◽  
Specific Interactions ◽  
Wild Type ◽  
Γ Radiation ◽  
E Coli ◽  
Copy Numbers ◽  
Type Pattern ◽  
Chromosome I

AbstractThe Deinococcus radiodurans multipartite genome system (MGS) consists of chromosome I (ChrI) and secondary genome elements; Chr II and megaplasmid (MP). The sequences upstream to parAB operons in Chr II (cisII) and MP (cisMP) helped an E. coli plasmid maintenance in D. radiodurans and showed sequence specific interactions with DnaA and ParBs. The cells devoid of cisII (ΔcisII) or cisMP (ΔcisMP) showed reduced γ radiation resistance and copy number of Chr II and MP. Fluorescent Reporter-Operator System (FROS) developed for ChrI, ChrII and MP in ΔcisII or ΔcisMP mutants showed no change in wild type pattern of Chr I localization. However, the relative copy numbers of Chr II and MP had reduced while anucleate cells had increased in mutants. These results suggested that cisII and cisMP elements contain both ori and centromere-like functions, and like other MGS bacteria, the Chr I and secondary genome are maintained independently in D. radiodurans.

scholarly journals Small-Molecule Mn Antioxidants in Caenorhabditis elegans and Deinococcus radiodurans Supplant MnSOD Enzymes during Aging and Irradiation

mBio ◽  
2022 ◽  
Author(s):  
Elena K. Gaidamakova ◽  
Ajay Sharma ◽  
Vera Y. Matrosova ◽  
Olga Grichenko ◽  
Robert P. Volpe ◽  
...  
Keyword(s):  
Antioxidant Enzymes ◽  
Caenorhabditis Elegans ◽  
Oxidative Damage ◽  
Small Molecule ◽  
Radiation Resistance ◽  
Deinococcus Radiodurans ◽  
Current Theory ◽  
Model Organisms ◽  
Content Type ◽  
Cellular Defense

The current theory of cellular defense against oxidative damage identifies antioxidant enzymes as primary defenders against ROS, with MnSOD being the preeminent superoxide (O 2 •− ) scavenger. However, MnSOD is shown to be dispensable both for radiation resistance and longevity in model organisms, the bacterium Deinococcus radiodurans and the nematode Caenorhabditis elegans .

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