Mating type proteins are sequence specific DNA-binding proteins that act as master switches in yeast differentiation by controlling gene expression in a cell type-specific fashion. Required for meiosis, but plays no role in conjugation. MATPI_SCHPM Mating-type P-specific polypeptide Pi SPMTR.02 matPi 159 MKRVAVLLKTVMCEFLKCDYNGYDRIISLLRRILTLICTPNLNGLTIKRVIDSMQSLEYIKQTCNFKLQMCISSMAFKRNNALQNCNHYAWCDDHCSDIGRPMTTVRGQCSKCTKPHLMRWLLLHYDNPYPSNSEFYDLSAATGLTRTQLRNWFSNRRR