Proton acceptor; for phosphorylation activity. Proton donor; for dephosphorylation activity
Important for interaction with partner proteins
Cysteine sulfenic acid (-SOH) intermediate
Schiff-base intermediate with substrate; via pyruvic acid
Proton acceptor; for processing activity
S-adenosylmethionine decarboxylase alpha chain
S-adenosylmethionine decarboxylase beta chain