Function
Catalyzes the removal of dipeptides from the N-terminus of oligopeptides. Prefers Ala and hydrophobic residues except Pro at the P1 position, and has no preference for P2 residues. Shows high dipeptidyl peptidase activity toward the synthetic substrates Lys-Ala-, Gly-Phe-, Met-Leu-, and Ser-Tyr-methylcoumaryl-7-amide (MCA), and slowly hydrolyzes Val-Tyr-MCA. Is likely involved in amino acid metabolism and bacterial growth of asaccharolytic P.gingivalis, that utilizes amino acids from extracellular proteinaceous nutrients as energy and carbon sources.
Sequence
MNKKIFSMMAASIIGSAAMTPSAGTNTGEHLTPELFMTLSRVSEMALSPDGKTAVYAVSFPDVKTNKATRELFTVNLDGSGRKQITDTESNEYAPAWMADGKRIAFMSNEGGSMQLWVMNADGTERRQLSNIEGGITGFLFSPDEKQVLFTKDIKFGKRTKDIYPDLDKATGRIITDLMYKHWDEWVETIPHPFIANATDGMITTGKDIMEGEPYEAPMKPWSGIEDFSWSPDGQNIAYASRKKTGMAYSLSTNSDIYIYNLTSGRTHNISEGMMGYDTYPKFSPDGKSIAWISMERDGYESDLKRLFVADLATGKRTHVNPTFDYNVDMIQWAPDSKGIYFLACKEAETNLWEITLKTGKIRQITQGQHDYADFSVRNDVMLAKRHSFELPDDLYRVNPKNGAAQAVTAENKAILDRLTPIACEKRWMKTTDGGNMLTWVVLPPDFDKNKKYPAILYCQGGPQNTVSQFWSFRWNLRLMAEQGYIVIAPNRHGVPGFGQKWNEQISGDYGGQNMRDYLTAVDEMKKEPYVDGDRIGAVGASYGGFSVYWLAGHHDKRFAAFIAHAGIFNLEMQYATTEEMWFANWDIGGPFWEKDNVVAQRTYATSPHKYVQNWDTPILMIHGELDFRILASQAMAAFDAAQLRGVPSEMLIYPDENHWVLQPQNALLFHRTFFGWLDRWLKK