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Journal of Biochemistry 2004 136(6):787-793; doi:10.1093/jb/mvh188
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© 2004 The Japanese Biochemical Society

MOLECULAR BIOLOGY

LexA Analog (dra0074) Is a Regulatory Protein That Is Irrelevant to recA Induction

Duohong Sheng1, Zhiguo Zheng1, Bing Tian1, Binghui Shen2 and Yuejin Hua1,*

1 Institute of Nuclear-Agricultural Sciences, Zhejiang University, 310029, Hangzhou, China; and 2 Department of Radiation Biology, City of Hope National Medical Center and Beckman Research Institute, Duarte, CA 91010-3000, USA

The protein DRA0074 is suggested to be another LexA in Deinococcus radiodurans, having similar motifs and RecA-mediated cleavage activity to D. radiodurans LexA (dra0344). However, its function has not been studied. We disrupted the gene dra0074 and measured its effect on RecA induction using fusion translation, immunoblot, and proteomic analysis. Results showed that the product of gene dra0074 is not involved in RecA induction, but is a regulator of other metabolisms in D. radiodurans.

* To whom correspondence should be addressed. E-mail: yjhua{at}zju.edu.cn


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