Alkylation damage causes MMR-dependent chromosomal instability in vertebrate embryos

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Alkylation damage causes MMR-dependent chromosomal instability in vertebrate embryos

S(N)1-type alkylating agents, like N-methyl-N-nitrosourea (MNU) and N-ethyl-N-nitrosourea (ENU), are potent mutagens. Exposure to alkylating agents gives rise to O(6)-alkylguanine, a modified base that is recognized by DNA mismatch repair (MMR) proteins but is not repairable, resulting in replication fork stalling and cell death. We used a somatic mutation detection assay to study the in vivo e...

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ژورنال

عنوان ژورنال: Nucleic Acids Research

سال: 2008

ISSN: 0305-1048,1362-4962

DOI: 10.1093/nar/gkn341