Tags: Protein.
In molecular biology D-stereospecific aminopeptidase (D-aminopeptidase) EC 3.4.11.19 is an enzyme which catalyses the release of an N-terminal D-amino acid from a peptide Xaa–Yaa- in which Xaa is preferably D-Ala D-Ser or D-Thr. D-amino acid amides and methyl esters also are hydrolyzed as is glycine amide.It is a dimeric enzyme with each monomer being composed of three domains. Domain B is organised to form a beta barrel made up of eight antiparallel beta strands.