Nomenclature	Histidine decarboxylase	Malonyl-CoA decarboxylase	Ornithine decarboxylase	Phosphatidylserine decarboxylase
Common abbreviation	HDC	MLYCD	ODC	PSDC
HGNC, UniProt	HDC, P19113	MLYCD, O95822	ODC1, P11926	PISD, Q9UG56
EC number	4.1.1.22	4.1.1.9	4.1.1.17	4.1.1.65
Endogenous substrates	L-histidine	malonyl-CoA	L-ornithine	phosphatidylserine
Products	histamine	acetyl CoA	putrescine	phosphatidylethanolamine
Cofactors	pyridoxal phosphate	pyridoxal phosphate	pyridoxal phosphate	pyruvic acid
Selective inhibitors (pIC50)	AMA, FMH 37	–	APA, DFMO	–
Comment	–	Inhibited by AMP-activated protein kinase-evoked phosphorylation 40	The activity of ODC is regulated by the presence of an antizyme (ENSG00000104904) and an ODC antizyme inhibitor (ENSG00000155096)	S-allylglycine is also an inhibitor of SAMDC 39