Protein
Dipeptidyl aminopeptidase BIII
Organism
Pseudoxanthomonas mexicana
Function
Exopeptidase that catalyzes the removal of dipeptide units (NH2-P2-P1- or -P1'-P2'-COOH) from the free amino or carboxy termini. Prefers substrates composed of bulky, hydrophobic amino acids at P1 and P1' positions. Has endopeptidase activity on N-terminally blocked peptide derivatives which contain aromatic amino acid residue at the P1 position. Exopeptidase activity is much higher than its endopeptidase activity.
Similarity
Belongs to the peptidase S9C family.
Sequence
MRHPAFRLTLLASTVAFALAPQAAQAAPSAADRIAGTELIARDALFGNPERANVQISPDGKYLSWVAAVDGVLNVWIAPADNPSQARAVTQDTARGIRSYFWSYQPDTLLYLRDSGGDEDFHLYAVDLKTGQAKDLTPFPKTTAQVAGVSPKHPGTILVGMNDRDAQWHDIYKVDLASGNRTLLEKNDAQIAGYIADADYTLKYAQRSRPDGGADVLRRGANGAWEKFDDIPFEDVLTTSPGGLTLDGKTLYFTDSRGRNTAALFAIDVASGKRTLVLEDARADVGGTLADPATGKVQAVSVDYLRDEWKVVDPAIRADLEKLEAIGPGDVSVNTRTLDDKTWIVAYSAAEAPLVYYRYDRSAGTLTKLFSARPKLEGKPLVPQWPVEIASRDNKTLVSYLTLPRSADANNDGKADAPVPLVLLVHGGPWARDSYGYGGYNQWLANRGYAVLSVNFRGSTGFGKDFTNAGNGEWAGKMHDDLIDAVQWAVKQGVTTQDQVAIMGGSYGGYATLTGLTFTPDAFACGVDIVGPSNLNTLLSTVPPYWASFFEQLAKRMGDPRTDAGKKWLTERSPLTRADQIKKPLLIGQGANDPRVKQAESDQIVKAMQAKNIPVTYVLFPDEGHGFARPENNKAFNAVTEGFLAQCLGGRAEPIGKDFTGSSISVPVGADGVPGLAEALKGHTQEVKK