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. 1972 Jan;109(1):236–242. doi: 10.1128/jb.109.1.236-242.1972

Transmethylation of Sterols in Aerobically Adapting Saccharomyces cerevisiae

P R Starr a,1, L W Parks a
PMCID: PMC247272  PMID: 4550665

Abstract

The transmethylation of methyl-14C-methionine and methyl-14C-adenosylmethionine into the nonsaponifiable lipids of anaerobically grown yeast during adaptation to aerobic conditions was investigated. The rate and extent of methyl transfer increased with aeration time and was dependent upon the presence of a fermentable carbon source and O2. Methionine and adenosylmethionine uptake rates increased in adaptation buffer but did not seem to be the rate-limiting factor for transmethylation under the conditions studied. Thinlayer chromatography of the nonsaponifiable fraction after exposure to label showed the labeled product to be ergosterol. Samples taken after short-term exposure to label were composed of two labeled steroidal products, one with kinetics of an ergosterol precursor.

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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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