The function of CPD (carboxypeptidase D, ENSG00000108582) is as follows. Functions in the processing of proteins and peptides in the secretory pathway. Mechanistically, cleaves exclusively C-terminal basic residues. By removing terminal residues, can modulate the activity, stability, and receptor-binding properties of bioactive peptides. . (Microbial infection) Acts as an alternative entry receptor for adeno-associated virus (AAV). .