Ribonuclease H2 Subunit C (RNASEH2C)

RNASEH2C encodes a ribonuclease H subunit that can cleave ribonucleotides from RNA:DNA duplexes. Mutations in this gene cause Aicardi-Goutieres syndrome-3, a disease that causes severe neurologic dysfunction. A pseudogene for this gene has been identified on chromosome Y, near the sex determining region Y (SRY) gene.The human RNASEH2A, RNASEH2B, and RNASEH2C genes interact with each other and form an enzymatic protein complex with RNase H2 activity. The complex was able to recognize and cleave a single ribonucleotide embedded in a DNA-DNA complex.Haplotype analysis suggested a founder effect. Affected members of a Pakistani family carried another homozygous mutation.