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Journal Articles

Radiation response mechanisms of the extremely radioresistant bacterium ${it Deinococcus radiodurans}$

Kobayashi, Yasuhiko; Narumi, Issei; Sato, Katsuya; Funayama, Tomoo; Kikuchi, Masahiro; Kitayama, Shigeru; Watanabe, Hiroshi*

Uchu Seibutsu Kagaku, 18(3), p.134 - 135, 2004/11

no abstracts in English

Journal Articles

Light dependency of resistance to ionizing radiation in ${it Euglena gracilis}$

Hayashi, Hirotaka; Narumi, Issei; Wada, Seiichi; Kikuchi, Masahiro; Furuta, Masakazu*; Uehara, Kaku*; Watanabe, Hiroshi*

Journal of Plant Physiology, 161(10), p.1101 - 1106, 2004/10

 Times Cited Count:10 Percentile:23.1(Plant Sciences)

The resistance of ${it Euglena gracilis}$ strains Z (wild type) and SM-ZK (chloroplast-deficient mutant) to ionizing radiation was investigated. The colony forming ability of ${it E. gracilis}$ strain Z was higher than that of strain SM-ZK after $$gamma$$-irradiation. For both strains, the resistance of light-grown cells was higher than that of dark-grown cells, suggesting that the light conditions during the culture contribute to the radiation resistance of ${it E. gracilis}$. The comet assay showed that the ability of rejoining DNA double-strand breaks (dsb) was much higher in the light-grown cells. These results suggest that ${it E. gracilis}$ possesses a light-induced repair system to cope with DNA dsb.

Journal Articles

The Structure of ${it D. radiodurans}$

Battista, J. R.*; Cox, M. M.*; Daly, M. J.*; Narumi, Issei; Radman, M.*; Sommer, S.*

Science, 302(24), p.567 - 568, 2003/10

no abstracts in English

Journal Articles

The Radiation resistant bacterium ${it Deinococcus radiodurans}$

Narumi, Issei

Hoshasen To Chikyu Kankyo; Seitaikei Eno Eikyo O Kangaeru, p.113 - 122, 2003/09

no abstracts in English

Journal Articles

Unlocking radiation resistance mechanisms; Still a long way to go

Narumi, Issei

Trends in Microbiology, 11(9), p.422 - 425, 2003/09

 Times Cited Count:51 Percentile:89.95(Biochemistry & Molecular Biology)

no abstracts in English

Journal Articles

Seeking birthplace of radioresistant bacteria

Narumi, Issei

Science & Technology Journal, 12(5), p.50 - 51, 2003/05

no abstracts in English

Journal Articles

Sterilization effects of ionizing radiation

Watanabe, Hiroshi

Bokin Bobai-Shi, 30(10), p.683 - 690, 2002/10

no abstracts in English

Oral presentation

Disruption analysis of the ${it recJ}$ gene in ${it Deinococcus grandis}$

Narumi, Issey*; Komoriya, Kan*; Sato, Katsuya

no journal, , 

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