Involvement of RecF in 254 Nm Ultraviolet Radiation Resistance in Deinococcus Radiodurans and Escherichia Coli

Overview

Journal Curr Microbiol

Specialty Microbiology

Date 2010 Apr 14

PMID 20386912

Citations 2

Authors

Xiaosong Chang

Lan Yang

Qing Zhao

Wenjuan Fu

Hao Chen

Zhiqun Qiu

Ji-An Chen

Ran Hu

Weiqun Shu

Affiliations

Soon will be listed here.

Abstract

recF is a critical gene involved in the RecFOR pathway of DNA repair in Deinococcus radiodurans (D. radiodurans). To investigate the role of recF in UV-C radiation resistance, we generated the recF-deficient D. radiodurans strain R1, expressed recF in Escherichia coli (E. coli) BL21 cells, and compared the ability of each to resist UV-C radiation by F (10), inactivation constant (IC), and extrapolation number (N). The mutation of recF in D. radiodurans R1 resulted in characteristic slow growth and dramatic sensitivity to UV-C irradiation. Transformation of recF into E. coli BL21 cells resulted in increased UV-C resistance compared to untransformed E. coli BL21 cells. These results suggested that recF is needed for the replication of D. radiodurans. Furthermore, as a part of the RecFOR pathway in D. radiodurans, disruption of recF could dramatically decrease the UV-C resistance of D. radiodurans and recF could increase the UV-C resistance of E. coli BL21 cells.

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