Nucleic Acids Research, 1988, Vol. 16, No. 15 7703-7712
© 1988
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The role of the excision-repair enzymes' in mutation-induction by cic-Pt(NH3)2Cl2
Laboratory of Molecular Genetics, Leiden University Wassenaarseweg 64, 2333A1 Leiden, The Netherlands
Received March 17, 1988. Revised June 28, 1988. Accepted June 28, 1988.
Mutation induction by cis-Pt(NH3)2Cl2 (cisplatin) has been shown to be absent in E.coli strains carrying a deletion of the uvrB gene (1). This suggested that excision-repair, which is normally thought to be error-free, is involved in mutation Induction with cisplatin. Here, the role of the excision repair enzymes UvrA, UvrB and UvrC is investigated using E.coli strains with different repair capacities. It is shown that cisplatin induced mutagenesis is dependent both on UvrA and UvrB but not on UvrC. Of the UvrB enzyme the N-terminal 113 aminoacids are sufficient for mutation induction by cisplatin.
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