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. 1974 Nov;54(5):686–689. doi: 10.1104/pp.54.5.686

Activation of 4-Hydroxycinnamate Hydroxylase in Extracts from Sorghum1,2

Helen A Stafford a
PMCID: PMC366582  PMID: 16658952

Abstract

Three types of activation of 4-hydroxycinnamate hydroxylase have been observed in extracts of Sorghum bicolor. One involves the elimination of a lag period either by increasing the enzyme concentration or by the addition of a catalytic amount of caffeic acid. Two involve increases after freezing of incubation mixtures containing both hydroxycinnamate and ascorbate, one being a rapid but short-lived increase that may be limited to the freeze-thaw period, the other a slower and more sustained effect on the maximum linear rate obtained during the incubation period after thawing.

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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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