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MLH1 mutL homolog 1

Gene ID: 4292, updated on 12-Sep-2021
Gene type: protein coding
Also known as: FCC2; COCA2; HNPCC; hMLH1; HNPCC2; MMRCS1

Summary

The protein encoded by this gene can heterodimerize with mismatch repair endonuclease PMS2 to form MutL alpha, part of the DNA mismatch repair system. When MutL alpha is bound by MutS beta and some accessory proteins, the PMS2 subunit of MutL alpha introduces a single-strand break near DNA mismatches, providing an entry point for exonuclease degradation. The encoded protein is also involved in DNA damage signaling and can heterodimerize with DNA mismatch repair protein MLH3 to form MutL gamma, which is involved in meiosis. This gene was identified as a locus frequently mutated in hereditary nonpolyposis colon cancer (HNPCC). [provided by RefSeq, Aug 2017]

Genomic context

Location:
3p22.2
Sequence:
Chromosome: 3; NC_000003.12 (36993487..37050846)
Total number of exons:
21

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