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. 1990 May;10(5):2176–2181. doi: 10.1128/mcb.10.5.2176

Isolation of mutant Saccharomyces cerevisiae strains that survive without sphingolipids.

R C Dickson 1, G B Wells 1, A Schmidt 1, R L Lester 1
PMCID: PMC360565  PMID: 2183021

Abstract

Sphingolipids comprise a large, widespread family of complex eucaryotic-membrane constituents of poorly defined function. The yeast Saccharomyces cerevisiae is particularly suited for studies of sphingolipid function because it contains a small number of sphingolipids and is amenable to molecular genetic analysis. Moreover, it is the only eucaryote in which mutants blocked in sphingolipid biosynthesis have been isolated. Beginning with a nonreverting sphingolipid-defective strain that requires the addition of the long-chain-base component of sphingolipids to the culture medium for growth, we isolated two strains carrying secondary, suppressor mutations that permit survival in the absence of exogenous long-chain base. Remarkably, the suppressor strains made little if any sphingolipid. A study of how the suppressor gene products compensate for the lack of sphingolipids may reveal the function(s) of these membrane lipids in yeast cells.

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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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