Function
Broad specificity aminopeptidase. Degrades a variety of peptides possessing various N-terminal amino acids including hydrophobic, basic and acidic amino acids. Preferentially hydrolyzes small peptides consisting of 4 or 5 amino acids. Hydrolyzes the N-terminal Xaa-Pro bonds in the chicken brain peptide Leu-Pro-Leu-Arg-PheNH2, the substance P fragment Arg-Pro-Lys-Pro and the bradykinin fragment Arg-Pro-Pro-Gly-Phe. Hydrolyzes the N-formylated peptides fMet-Leu-Phe, fMet-Ala-Gly-Ser-Glu and fMet-Nle-Leu-Phe-Nle-Tyr-Lys, but does not hydrolyze peptides with acetylation or pyroglutamic acid at N-terminus. Does not hydrolyze large peptides such as complete substance P, bradykinin or schistoFLRFamide.
Sequence
MAAGFFISKSVGIVGIVLALGAVATIIALSVVYAQEKNKSSGGSGGSDTTSTTTASTTTTSTTTASTTAAPNNPWNRWRLPTALKPESYEVTLQPFLTPDDNNMYIFKGNSSVVFLCEEATDLILIHSNKLNYTLQGGFHASLHAVNGSTPPTISNTWLETNTQYLVLQLAGPLQQGQHYRLFSIFTGELADDLAGFYRSEYTEGNVTKVVATTQMQAPDARKAFPCFDEPAMKAVFTVTMIHPSDHTAISNMPVHSTYQLQMDGQSWNVTQFDPTPRMSTYLLAFIVSQFDYVENNTGKVQIRIWGRPAAIAEGQGEYALEKTGPILSFFERHYNTAYPLPKSDQVGLPDFNAGAMENWGLVTYRENSLLYDNAYSSIGNKERVVTVIAHELAHQWFGNLVTLRWWNDLWLNEGFASYVEYLGADSAEPTWDIKDLMVLNELYTVMATDALTTSHPLTFREDEINTPAQISEVFDSIAYSKGASVLRMLSDFLTEDVFKEGLQSYLHDFSYNNTVYTDLWDHLQEAVNKNSVPLPDSIGAIMDRWTLQMGFPVVTVNTLTGSVQQSHFLLDSNSTVERPSVFNYTWIVPITWMTPSRTGDRYWLVDVSATNSDFSVGSSTWLLLNLNVSGYFRVNYNQENWDQLLQQLSNNHQAIPVINRAQIIDDAFNLARAQQVSVTLALNTTRFLSGETAYMPWQAALNNLQYFQLMFDRSEVFGAMTKYIQKQVTPLFEYYRTATNNWTAIPSALMDQYNEINAISTACSYGIAECQQLATALYQQWRQNVSNNPIAPNLRSAIYCSAVATGGEEVWDFIWERFLEAPVVSEADKLRTALTCSTETWILQRYLQYTIDPTKIRKQDATSTINSIASNVVGQPLAWDFIRSNWRTLFGQYGGGSFSFSRLISAVTQRFNTEFELKQLEQFKADNQDIGFGSGTRALEQALERTRTNINWVKENKEVVHAWFRAETASS