The MutS C terminus is essential for mismatch repair activity in vivo.

Abstract excerpt

An Escherichia coli K-12 strain was constructed with a chromosomal deletion (mutSdelta800) in the mutS gene that produced the removal of the C-terminal 53 amino acids which are not present in the MutS crystal structure. This strain has a MutS null phenotype for mutation avoidance, anti-recombination, and sensitivity to cytotoxic agents in a dam mutant background.

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