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is characterized as Type II bacterial topoisomerase and its activity is differentially regulated by PprA in vitroKota, S.*; Rajpurohit, Y. S.*; Charaka, V. K.*; Sato, Katsuya; Narumi, Issey*; Misra, H, S.*
Extremophiles, 20(2), p.195 - 205, 2016/03
Times Cited Count：12 Percentile：40.59(Biochemistry & Molecular Biology)Sato, Katsuya; Narumi, Issei; Kikuchi, Masahiro; Kitayama, Shigeru; Yanagisawa, Tadashi*; Yamamoto, Kazuo; Watanabe, Hiroshi
Journal of Biochemistry, 131(1), p.121 - 129, 2002/01
Times Cited Count：25 Percentile：38.54(Biochemistry & Molecular Biology)RecA protein is considered to be the most important participant in the radiation resistance of . We identified a new 
mutation (
) in the DNA-repair deficient mutant strain KI696, the phenotype of which is remarkably different from mutant strain rec30 carrying 
. In vitro, neither RecA424 nor RecA670 could promote DNA strand exchange, indicating that both RecA424 and Rec670 are defective in recombination activity. RecA424 promoted the autocleavage reaction of LexA in vitro, whereas RecA670 did not. The LexA level in KI696 was decreased following 
-irradiation. However, the LexA level in strain rec30 was constant irrespective of irradiation. These results indicate that RecA424 retains co-protease activity, whereas RecA670 does not. While strain rec30 is extremely radiation sensitive, strain KI696 is only slightly sensitive. Together, these observations suggest that the co-protease activity rather than the recombination activity of RecA contributes to the radiation resistance in 
.
Kobayashi, Yasuhiko; Watanabe, Hiroshi; Kikuchi, Masahiro; Narumi, Issei
Advances in Space Research, 25(10), p.2103 - 2106, 2000/00
Times Cited Count：10 Percentile：80.45(Engineering, Aerospace)no abstracts in English
Kikuchi, Masahiro; Narumi, Issei; Kitayama, Shigeru*; Watanabe, Hiroshi; Yamamoto, Kazuo*
FEMS Microbiol. Lett., 174, p.151 - 157, 1999/00
Times Cited Count：16 Percentile：32.92(Microbiology)no abstracts in English
Narumi, Issei; K.Cherdchu*; Kitayama, Shigeru*; Watanabe, Hiroshi
Gene, 198, p.115 - 126, 1997/00
Times Cited Count：41 Percentile：66.63(Genetics & Heredity)no abstracts in English
Kobayashi, Yasuhiko; ; *; Watanabe, Hiroshi
Biol. Sci. Space, 10(2), p.97 - 101, 1996/00
no abstracts in English
-irradiation; *; ; *; Watanabe, Hiroshi
Radiation and Environmental Biophysics, 35, p.95 - 99, 1996/00
Times Cited Count：31 Percentile：73.55(Biology)no abstracts in English
; *; S.H.Sjarief*; Watanabe, Hiroshi
Radiat. Res., 139, p.123 - 125, 1994/00
Times Cited Count：5 Percentile：41.86(Biology)no abstracts in English
Kobayashi, Yasuhiko
Hoshasen To Sangyo, (56), 55, 47 Pages, 1992/12
no abstracts in English
; Watanabe, Hiroshi; ; Tano, Shigemitsu*
Dai-2-Kai Genken, Daigaku Purojekuto Kyodo Kenkyu Seika Happyokai Hobunshu, 0, p.100 - 103, 1992/00
no abstracts in English
*; Watanabe, Hiroshi; ; Q.Hu*; *
Proc. of Int. Conf. on Radiation Effects and Protection, 0, p.160 - 165, 1992/00
no abstracts in English
Q.Hu*; *; Kobayashi, Yasuhiko; ; Watanabe, Hiroshi
Proc. of Int. Conf. on Radiation Effects and Protection, 0, p.166 - 170, 1992/00
no abstracts in English
S.H.Sjarief*; ; *; *; Watanabe, Hiroshi
JAERI-M 90-076, 17 Pages, 1990/05
no abstracts in English
that is involved in transcriptional response to DNA damage in 
Kaneko, Takumi*; Sato, Katsuya; Narumi, Issey*
no journal, ,
no abstracts in English
gene in Ikegami, Kazuki*; Sato, Katsuya; Narumi, Issey*
no journal, ,
no abstracts in English
in the radioresistant bacteriaKurosawa, Kakeru*; Sato, Katsuya; Narumi, Issey*
no journal, ,
no abstracts in English
in the radioresistant bacteriaKurosawa, Kakeru*; Sato, Katsuya; Narumi, Issey*
no journal, ,
no abstracts in English
