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. 1987 Apr;169(4):1656–1662. doi: 10.1128/jb.169.4.1656-1662.1987

The SNF3 gene is required for high-affinity glucose transport in Saccharomyces cerevisiae.

L F Bisson, L Neigeborn, M Carlson, D G Fraenkel
PMCID: PMC211996  PMID: 3549699

Abstract

Glucose uptake mutants have not been previously obtained in Saccharomyces cerevisiae, possibly because there seem to be at least two transport systems, of low and high affinities. We showed that snf3 (sucrose nonfermenting) mutants did not express high-affinity glucose uptake. Furthermore, their growth was completely impaired on low concentrations of glucose in the presence of antimycin A (which blocks respiration). Several genes which complemented the original snf3 gene were obtained on multicopy plasmids. Some of them, as well as plasmid-carried SNF3 itself, conferred a substantial increase in high-affinity glucose uptake in both snf3 and wild-type hosts. The effects of glucose on the expression of such a plasmid-determined high-affinity uptake resembled those in the wild type. Other genes complementing snf3 seemed to cause an increase in low-affinity glucose uptake. We suggest that SNF3 may function specifically in high-affinity glucose uptake, which is needed under some conditions of growth on low glucose concentrations. SNF3 itself or the other complementing genes may specify components of the glucose uptake system.

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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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