PMS2P3 is a symbol for the gene, PMS1 homolog 2, mismatch repair system component pseudogene 3, in humans. Other names include: Putative postmeiotic segregation increased 2-like protein 3; PMS2-related protein 3; Postmeiotic segregation increased 2-like protein 9; Postmeiotic segregation increased protein 5; Putative postmeiotic segregation increased 2 pseudogene 3; PMS2L3; PMS2L9; PMS5; PMSR3; postmeiotic segregation increased 2 pseudogene 3. The encoded protein has an amino acid length of 168 and a mass of 18.7 kDa. Other isoforms may exist. PMS2P3 is a member of the DNA mismatch repair MutL/HexB family. This gene shares homology with other species, including: Arabidopsis.