Inactivation of maltose permease and maltase in sporulating Saccharomyces cerevisiae

被引：1
|
作者：
Ferreira, JC
Panek, AD
de Araujo, PS
机构：
[1] Univ Fed Rio de Janeiro, Inst Quim, Dept Bioquim, BR-21949900 Rio De Janeiro, Brazil
[2] Univ Sao Paulo, Inst Quim, Dept Bioquim, BR-01498 Sao Paulo, Brazil
来源：
CANADIAN JOURNAL OF MICROBIOLOGY | 2000年 / 46卷 / 04期
关键词：
maltase activity; maltose permease activity; sporulation; Saccharomyces cerevisiae;
D O I：
10.1139/cjm-46-4-383
中图分类号：
Q5 [生物化学]; Q7 [分子生物学];
学科分类号：
071010 ; 081704 ;
摘要：
Maltose transport and maltase activities were inactivated during sporulation of a MAL constitutive yeast strain harboring different MAL loci. Both activities were reduced to almost zero after 5 h of incubation in sporulation medium. The inactivation of maltase and maltose permease seems to be related to optimal sporulation conditions such as a suitable supply of oxygen and cell concentration in the sporulating cultures, and occurs in the fully derepressed conditions of incubation in the sporulation acetate medium. The inactivation of maltase and maltose permease under sporulation conditions in MAL constitutive strains suggests an alternative mechanism for the regulation of the MAL gene expression during the sporulation process.
引用
收藏
页码：383 / 386
页数：4
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