Gly-cisPro motif, important for rejection of L-amino acids
Cysteine sulfenic acid (-SOH) intermediate; for peroxidase activity
Phosphatidylserine decarboxylase alpha chain
Phosphatidylserine decarboxylase beta chain
Schiff-base intermediate with substrate; via pyruvic acid
Phosphocysteine intermediate; for EIIB activity
Removed in mature form; by autocatalysis
Isoglutamyl lysine isopeptide (Glu-Lys) (interchain with K-? in acceptor proteins)