The preparation of an enzyme associated with aflatoxin biosynthesis by affinity chromatography.

Abstract:

:An affinity matrix for the purification of norsolorinic acid dehydrogenase, an enzyme involved in aflatoxin biosynthesis, was prepared by coupling norsolorinic acid to an agarose gel. This matrix was found to be ineffective in isolating active enzyme, and was therefore modified by methylation, using diazomethane. The methylated matrix produced a one-step purification of the enzyme from a crude homogenate, resulting in a 138-fold purification. The active isolate was found to contain one major and two minor bands upon nondenaturing electrophoresis, and all the norsolorinic acid dehydrogenase activity was associated with the major band. It was concluded that the matrix exhibited true affinity for the enzyme, and that affinity chromatography was a valuable approach to isolating other secondary metabolic enzymes involved in the biosynthesis of the aflatoxins.

authors

Chuturgoon AA,Dutton MF,Berry RK

doi

10.1016/0006-291x(90)91908-b

subject

Has Abstract

pub_date

1990-01-15 00:00:00

pages

38-42

issue

1

eissn

0006-291X

issn

1090-2104

pii

0006-291X(90)91908-B

journal_volume

166

pub_type

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