EC 1 - Oxidoreductases
EC 1.4 - Acting on the CH-NH2 group of donors
EC 1.4.3 - With oxygen as acceptor
EC 1.4.3.5 - Pyridoxal 5'-phosphate synthase
IntEnz view
ENZYME view
IntEnz Enzyme Nomenclature
EC 1.4.3.5
Names
Accepted name:
pyridoxal 5'-phosphate synthase
Other
names:
PMP oxidase
pyridoxamine 5'-phosphate oxidase
pyridoxamine phosphate oxidase
pyridoxaminephosphate oxidase (EC 1.4.3.5: deaminating)
pyridoxine (pyridoxamine) 5'-phosphate oxidase
pyridoxine (pyridoxamine)phosphate oxidase
pyridoxol-5'-phosphate:oxygen oxidoreductase (deaminating) [incorrect]
pyridoxamine-phosphate oxidase
PdxH
pyridoxamine 5'-phosphate oxidase
pyridoxamine phosphate oxidase
pyridoxaminephosphate oxidase (EC 1.4.3.5: deaminating)
pyridoxine (pyridoxamine) 5'-phosphate oxidase
pyridoxine (pyridoxamine)phosphate oxidase
pyridoxol-5'-phosphate:oxygen oxidoreductase (deaminating) [incorrect]
pyridoxamine-phosphate oxidase
PdxH
Systematic name:
pyridoxamine-5'-phosphate:oxygen oxidoreductase (deaminating)
Reactions
- (1) pyridoxamine 5'-phosphate + H2O + O2 = pyridoxal 5'-phosphate + NH3 + H2O2
- (2) pyridoxine 5'-phosphate + O2 = pyridoxal 5'-phosphate + H2O2
Cofactor
Comments:
A flavoprotein (FMN). In Escherichia coli, the coenzyme pyridoxal 5'-phosphate is synthesized de novo by a pathway that involves EC 1.2.1.72 (erythrose-4-phosphate dehydrogenase), EC 1.1.1.290 (4-phosphoerythronate dehydrogenase), EC 2.6.1.52 (phosphoserine transaminase), EC 1.1.1.262 (4-hydroxythreonine-4-phosphate dehydrogenase), EC 2.6.99.2 (pyridoxine 5'-phosphate synthase) and EC 1.4.3.5 (with pyridoxine 5'-phosphate as substrate).
Links to other databases
Enzymes and pathways:
NC-IUBMB
,
BRENDA
,
DIAGRAM
,
ExplorEnz
,
ENZYME@ExPASy
,
KEGG
,
MetaCyc
,
UniPathway
Protein domains and families:
PROSITE:PDOC00815
Gene Ontology:
GO:0004733
CAS Registry Number:
9029-21-4
References
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Kinetic properties of pyridoxamine (pyridoxine)-5'-phosphate oxidase from rabbit liver.J. Biol. Chem. 258 : 840-845 (1983). [PMID: 6822512]
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The enzymatic oxidation of pyridoxine and pyridoxamine phosphates.J. Biol. Chem. 236 : 2089-2095 (1961). [PMID: 13782387]
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Purification and characterization of the pyridoxol-5'-phosphate:oxygen oxidoreductase (deaminating) from Escherichia coli.Biochim. Biophys. Acta 1247 : 265-271 (1995). [PMID: 7696318]
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Vitamin B6 biosynthesis: formation of pyridoxine 5'-phosphate from 4-(phosphohydroxy)-L-threonine and 1-deoxy-D-xylulose-5-phosphate by PdxA and PdxJ protein.FEBS Lett. 449 : 45-48 (1999). [PMID: 10225425]
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Structure and properties of recombinant human pyridoxine 5'-phosphate oxidase.Protein Sci. 12 : 1455-1463 (2003). [PMID: 12824491]
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Structure of Escherichia coli pyridoxine 5'-phosphate oxidase in a tetragonal crystal form: insights into the mechanistic pathway of the enzyme.Acta Crystallogr. D Biol. Crystallogr. 61 : 599-604 (2005). [PMID: 15858270]
[EC 1.4.3.5 created 1961, modified 2006]