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. 1973 Aug;134(4):891–897. doi: 10.1042/bj1340891

Effect of light on enzymes of phenylpropanoid metabolism and hispidin biosynthesis in Polyporus hispidus

A M D Nambudiri 1, C P Vance 1, G H N Towers 1
PMCID: PMC1177897  PMID: 4762762

Abstract

The effects of light on growth, pigmentation and the activities of enzymes involved in the deamination of phenylalanine and tyrosine and in the biosynthesis of hispidin were examined in Polyporus hispidus. Evidence is presented for the stimulation of phenylalanine ammonia-lyase activity by light. Tyrosine ammonia-lyase activity and aminotransferase activities for phenylalanine and tyrosine were higher in the dark. Tracer studies showed that conversion of cinnamate into p-coumarate is enhanced by light. p-Coumaric acid hydroxylase, catalysing the conversion of p-coumarate into caffeate, could be detected only in cultures exposed to light. These results suggest that the cinnamate pathway for the metabolism of phenylalanine, leading to hispidin synthesis, is regulated by light in P. hispidus.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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