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Journal Articles

The Role of ${it Deinococcus radiodurans}$ RecFOR proteins in homologous recombination

Sato, Katsuya; Kikuchi, Masahiro; Ishaque, A. M.*; Oba, Hirofumi*; Yamada, Mitsugu; Tejima, Kohei; Onodera, Takefumi; Narumi, Issei

DNA Repair, 11(4), p.410 - 418, 2012/04

 Times Cited Count:24 Percentile:59.62(Genetics & Heredity)

In an effort to gain insights into the role of ${it D. radiodurans}$ RecFOR proteins in homologous recombination, we generated ${it recF}$, ${it recO}$ and ${it recR}$ disruptant strains and characterized the disruption effects. Disruption of ${it recR}$ resulted in severe reduction of the transformation efficiency. On the other hand, the ${it recF}$ disruptant strain was the most sensitive phenotype to $$gamma$$ rays, UV irradiation and mitomycin C among the three disruptants. In the ${it recF}$ disruptant strain, the intracellular level of the LexA1 protein did not decrease following $$gamma$$ irradiation. These results demonstrate that the RecF protein plays a crucial role in the homologous recombination repair process by facilitating RecA activation. Thus, the RecF and RecR proteins are involved in the RecA activation and the stability of incoming DNA, respectively, during RecA-mediated homologous recombination processes that initiated the ESDSA pathway in ${it D. radiodurans}$.

Journal Articles

Mutator alleles of yeast DNA polymerase $$zeta$$

Sakamoto, Ayako; Stone, J. E.*; Kissling, G. E.*; McCulloch, S. D.*; Pavlof, Y. I.*; Kunkel, T. A.*

DNA Repair, 6(12), p.1829 - 1838, 2007/12

no abstracts in English

Journal Articles

A Model for the structure of the ${it Escherichia coli}$ SOS-regulated UmuD$$_{2}$$ protein

Sutton, M. D.*; Guzzo, A.*; Narumi, Issei; Costanzo, M.*; Altenbach, C.*; Ferentz, A. E.*; Hubbell, W. L.*; Walker, G. C.*

DNA Repair, 1(1), p.77 - 93, 2002/01

UmuD$$_{2}$$ protein is a regulatory subunit of ${it Escherichia coli}$ DNA polymerase V. This protein forms a complex with UmuC protein, a catalytic subunit of DNA polymerase V, and plays a important role in error-prone translesion DNA synthesis, which serves as the mechanistic basis for most DNA-damaging agent and UV light mutagenesis. In this paper, based on the results of a combination of experimental studies, we have developed a refined model for the structure of the UmuD$$_{2}$$ homodimer. Implications of the structural change of UmuD$$_{2}$$ protein with respect to its roles in managing the action of DNA polymease V are discussed.

Journal Articles

Amplified UvrA protein can ameliorate the ultraviolet sensitivity of an ${it Escherichia coli recA}$ mutant

Kiyosawa, Kazuhiro*; Tanaka, Masashi*; Matsunaga, Tsukasa*; Nikaido, Osamu*; Yamamoto, Kazuo

Mutation Research; DNA Repair, 487(3-4), p.149 - 156, 2001/12

no abstracts in English

Journal Articles

Mutation in recR gene of Deinococcus radiodurans and possible in volvement of its product in the repair of DNA interstrand cross-links

Kitayama, Shigeru*; Narumi, Issei; Kikuchi, Masahiro; Watanabe, Hiroshi

Mutation Research; DNA Repair, 461(3), p.179 - 187, 2000/11

no abstracts in English

Journal Articles

Identification and disruption analysis of recN gene in the extreamly radioresistant bacterium Deinococcus radiodurans

Funayama, Tomoo; Narumi, Issei; Kikuchi, Masahiro; Kitayama, Shigeru*; Watanabe, Hiroshi; Yamamoto, Kazuo

Mutation Research; DNA Repair, 435, p.151 - 161, 1999/00

no abstracts in English

Journal Articles

Molecular analysis of the Deinococcus radiodurans recA locus and identification of a mutation site in a DNA repair-deficient mutant, rec30

Narumi, Issei; Sato, Katsuya; Kikuchi, Masahiro; Funayama, Tomoo; Kitayama, Shigeru; Yanagisawa, Tadashi*; Watanabe, Hiroshi; Yamamoto, Kazuo

Mutation Research; DNA Repair, 435(3), p.233 - 243, 1999/00

no abstracts in English

Journal Articles

Reduced rejoining ability of DNA strand breaks with differentiation in barley root cells

Shikazono, Naoya; Watanabe, Hiroshi; ; Tano, Shigemitsu*; *; *

Mutat. Res., DNA Repair, 337, p.41 - 48, 1995/00

no abstracts in English

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