Author:
van der Meer R A,Duine J A
Abstract
Treatment of purified human placental lysyl oxidase with 2,4-dinitrophenylhydrazine (DNPH) resulted in a large spectral change and inhibition of enzyme activity. Proteolytic degradation of the derivatized enzyme yielded only one single coloured product, which was spectrally and chromatographically identical with the C-5 hydrazone of PQQ (pyrroloquinoline quinone) and DNPH. Since this represents the first example of a PQQ-containing enzyme in man, possible implications of the finding are discussed.
Subject
Cell Biology,Molecular Biology,Biochemistry
Cited by
96 articles.
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