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Visualization of UV-induced Replication Intermediates in E. coli using Two-dimensional Agarose-gel Analysis
Published on: December 21, 2010
Bacterial gene products in response to near-ultraviolet radiation
1Cancer Research Center, Columbia, MO 65201, USA. abe@biosci.mbp.missouri.edu
Abstract:
Our research has focused on bacterial gene products that protect cells from damage by near-ultraviolet radiation (near-UV) including gene products involved in the subsequent recovery process. Protective gene products include such anti-oxidants as catalases, superoxide dismutases and glutathione reductase. Near-UV damage recovery products include exonuclease III and DNA-glycosylases. Perhaps more critical than the products of structural genes are certain regulatory gene products that are triggered upon excess near-UV oxidation and lead to synthesis of entire batteries of anti-oxidant enzymes, DNA repair enzymes, and DNA-integrity proteins. Our recent experiments have focused on RpoS and its interaction with OxyR, two proteins that regulate the synthesis of molecules that protect cells from near-UV and other oxidative stresses.
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