Peptidylglycine monooxygenase

peptidylglycine monooxygenase
Identifiers
EC number	1.14.17.3
CAS number	Template:CAS
Databases
IntEnz	IntEnz view
BRENDA	BRENDA entry
ExPASy	NiceZyme view
KEGG	KEGG entry
MetaCyc	metabolic pathway
PRIAM	profile
PDB structures	RCSB PDB PDBe PDBsum
Gene Ontology	AmiGO / EGO
Search PMC articles PubMed articles NCBI proteins

In enzymology, a peptidylglycine monooxygenase (EC 1.14.17.3) is an enzyme that catalyzes the chemical reaction

peptidylglycine + ascorbate + O₂ $\rightleftharpoons$ peptidyl(2-hydroxyglycine) + dehydroascorbate + H₂O

The 3 substrates of this enzyme are peptidylglycine, ascorbate, and O₂, whereas its 3 products are peptidyl(2-hydroxyglycine), dehydroascorbate, and H₂O.

This enzyme belongs to the family of oxidoreductases, specifically those acting on paired donors, with O2 as oxidant and incorporation or reduction of oxygen. The oxygen incorporated need not be derived from O2 with reduced ascorbate as one donor, and incorporation of one atom of oxygen into the other donor. The systematic name of this enzyme class is peptidylglycine,ascorbate:oxygen oxidoreductase (2-hydroxylating). Other names in common use include peptidylglycine 2-hydroxylase, peptidyl alpha-amidating enzyme, peptide-alpha-amide synthetase, synthase, peptide alpha-amide, peptide alpha-amidating enzyme, peptide alpha-amide synthase, peptidylglycine alpha-hydroxylase, peptidylglycine alpha-amidating monooxygenase, PAM-A, PAM-B, and PAM. It employs one cofactor, copper.

Structural studies

As of late 2007, 8 structures have been solved for this class of enzymes, with PDB accession codes 1OPM, 1PHM, 1SDW, 1YI9, 1YIP, 1YJK, 1YJL, and 3PHM.