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甾醇组成改变对酿酒酵母生长特性的影响。

Effect of altered sterol composition on growth characteristics of Saccharomyces cerevisiae.

作者信息

Thompson E D, Parks L W

出版信息

J Bacteriol. 1974 Nov;120(2):779-84. doi: 10.1128/jb.120.2.779-784.1974.

Abstract

The function of sterols in mitochondrial structures of yeast was examined. Sterol mutant strains were employed to examine the effects of altered sterolic content on optimal and permissive growth temperatures in respiring and fermenting cultures. Although fermentative growth was unaffected by sterol composition, a definite decrease in both the optimal and the permissive growth temperatures of respiring cultures was observed when ergosterol was replaced by Delta(8(9), 22)-ergostadiene-3beta-ol. In vitro studies showed a similar decrease in membrane phase transition temperatures of the mitochondrial enzyme S-adenosylmethionine: Delta(24)-sterol methyltransferase in the mutant strains. Increased sterol and methyltransferase levels were detected in strains incapable of synthesizing ergosterol. A possible control function governing sterol synthesis is proposed for ergosterol.

摘要

研究了酵母线粒体结构中甾醇的功能。使用甾醇突变菌株来检测甾醇含量改变对呼吸和发酵培养物中最佳生长温度和允许生长温度的影响。尽管发酵生长不受甾醇组成的影响,但当麦角甾醇被Δ(8(9),22)-麦角甾二烯-3β-醇取代时,观察到呼吸培养物的最佳生长温度和允许生长温度均明显降低。体外研究表明,突变菌株中线粒体酶S-腺苷甲硫氨酸:Δ(24)-甾醇甲基转移酶的膜相变温度也有类似降低。在无法合成麦角甾醇的菌株中检测到甾醇和甲基转移酶水平升高。提出了麦角甾醇对甾醇合成可能的控制作用。

相似文献

7
Sterol methylation in Saccharomyces cerevisiae.酿酒酵母中的甾醇甲基化
J Bacteriol. 1984 Feb;157(2):475-83. doi: 10.1128/jb.157.2.475-483.1984.

引用本文的文献

7
Sterol methylation in Saccharomyces cerevisiae.酿酒酵母中的甾醇甲基化
J Bacteriol. 1984 Feb;157(2):475-83. doi: 10.1128/jb.157.2.475-483.1984.

本文引用的文献

7
Effect of temperature on sterol metabolism in yeast.温度对酵母中甾醇代谢的影响。
J Cell Comp Physiol. 1962 Apr;59:107-10. doi: 10.1002/jcp.1030590203.
8
Studies on ergosterol production by yeasts.酵母麦角固醇生成的研究。
Appl Microbiol. 1954 Nov;2(6):371-9. doi: 10.1128/am.2.6.371-379.1954.

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