C5a peptidase (EC 3.4.21.110, streptococcal C5a peptidase, ScpA, ScpB, SCPA) is an enzyme.
[1][2][3][4][5][6] The primary cleavage site is at His67-Lys68 in human C5a with a minor secondary cleavage site at Ala58-Ser59.
This enzyme is a surface-associated subtilisin-like serine peptidase with very specific substrate preference.