catabolite repression


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catabolite repression

[kə′tab·ə‚līt ri′presh·ən]
(biochemistry)
An intracellular regulatory mechanism in bacteria whereby glucose, or any other carbon source that is an intermediate in catabolism, prevents formation of inducible enzymes.
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These results appear to support catabolite repression by glucose and sorbitol with prodigiosin production.
The biosynthesis of [alpha]-amylase in most species of the genus Bacillus is repressed by readily metabolizable substrates, especially glucose, by a mechanism of catabolite repression [22].
1996, Sequence-specific binding sites in the Taka-amylase A G2 promoter for the CreA repressor mediating carbon catabolite repression.
Decrease in biomass with high xylose concentration may be due to catabolite repression during aerobic metabolism.