Production of phenotypically epimeraseless yeast by L-arabinose
- PMID: 5557596
- PMCID: PMC248724
- DOI: 10.1128/jb.106.3.915-919.1971
Production of phenotypically epimeraseless yeast by L-arabinose
Abstract
The previous report from this laboratory that l-arabinose is a gratuitous inducer of the galactose transport system has been found to be an artefact resulting from the combination of galactose contamination of commercial samples of l-arabinose and inhibition by l-arabinose of galactose metabolism by inactivation of uridine-diphosphate-glucose-4-epimerase. As a result of l-arabinose inhibition of the metabolism of the contaminating galactose, galactose itself serves as a gratuitous inducer, producing phenotypically epimeraseless yeast.
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