| Literature DB >> 3593209 |
P F Knowles, K B Pandeya, F X Rius, C M Spencer, R S Moog, M A McGuirl, D M Dooley.
Abstract
Plasma amine oxidases (EC 1.4.3.6) are classified as containing the organic cofactor pyridoxal phosphate. Biochemical and bioassays on the pig plasma amine oxidase fail to reveal the presence of pyridoxal phosphate and 31P n.m.r. evidence is also inconsistent with pyridoxal phosphate in the enzyme. Resonance Raman spectral studies on phenylhydrazone derivatives of the pig and bovine plasma enzymes have been carried out and comparisons made with the corresponding derivatives of pyridoxal phosphate and pyrroloquinoline quinone (PQQ). The resonance Raman evidence indicates that the cofactor in both plasma amine oxidases is PQQ or a closely related species and not pyridoxal phosphate. The results substantiate earlier reports concerning the identity of the organic cofactor.Entities:
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Year: 1987 PMID: 3593209 PMCID: PMC1147602 DOI: 10.1042/bj2410603
Source DB: PubMed Journal: Biochem J ISSN: 0264-6021 Impact factor: 3.857