CALCIUM-ION INFLUX DURING SPORULATION IN THE YEAST SACCHAROMYCES-CEREVISIAE

被引：8
|
作者：
SUIZU, T
TSUTSUMI, H
KAWADO, A
SUGINAMI, K
IMAYASU, S
MURATA, K
机构：
[1] KYOTO UNIV,FOOD SCI RES INST,UJI,KYOTO 611,JAPAN
[2] GEKKEIKAN SAKE CO LTD,RES INST,KYOTO 612,JAPAN
来源：
CANADIAN JOURNAL OF MICROBIOLOGY | 1995年 / 41卷 / 11期
关键词：
SACCHAROMYCES CEREVISIAE; CALCIUM SIGNALING; CA2+ INFLUX; MEIOSIS; SPORULATION;
D O I：
10.1139/m95-143
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：
The changes in intra- and (or) extra-cellular concentrations of Ca2+, Mg2+, K+, and Na+ during sporulation of a MATa/MAT alpha diploid yeast of Saccharomyces cerevisiae were examined in a nutrition-deprived medium with potassium acetate. Among these, Ca2+ in external medium was preferentially incorporated into cells, and sporulation was induced when the magnitude of free Ca2+ gradient between cytosol [Ca2+](i) and external medium [Ca2+](0) reached more than 3 x 10(3) ([Ca2+](i)/[Ca2+](0) = 3.5 x 10(3)). The result indicated that the meiosis and (or) sporulation signal of the yeast S. cerevisiae was generated through elevated Ca2+ influx rather than release from the internal Ca2+ stores.
引用
收藏
页码：1035 / 1037
页数：3
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