ID 3.4.11.24 DE aminopeptidase S. AN double-zinc aminopeptidase. AN SGAP. CA Release of an N-terminal amino acid with a preference for large CA hydrophobic amino-terminus residues. CC -!- Activated by Ca(2+). CC -!- In the presence of Ca(2+), the best substrates are Leu-Phe, Leu-Ser, CC Leu-pNA (aminoacyl-p-nitroanilide), Phe-Phe-Phe and Phe-Phe. CC -!- Peptides with proline in the P1' position are not substrates. CC -!- Belongs to peptidase family M28. CC -!- Formerly EC 3.4.11.n1. DR P80561, APX_STRGG ; //