ATP OPENS AN ELECTROPHORETIC POTASSIUM-TRANSPORT PATHWAY IN RESPIRING YEAST MITOCHONDRIA

被引:18
作者
ROUCOU, X [1 ]
MANON, S [1 ]
GUERIN, M [1 ]
机构
[1] UNIV BORDEAUX 2,CNRS,INST BIOCHIM & GENET CELLULAIRES,F-33077 BORDEAUX,FRANCE
关键词
RESPIRATION; ATP; K+ TRANSPORT; YEAST MITOCHONDRION;
D O I
10.1016/0014-5793(95)00380-R
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
In the presence of KCl and only at low phosphate concentrations, ATP stimulated state 4 of the respiration of isolated yeast mitochondria, This effect could be related to a partial collapse of the transmembrane potential which was created by the respiratory chain or the F0F1-ATPase. Sodium and lithium could not replace potassium ion. Atractyloside prevented the opening of this K+ pathway, suggesting that only matricial ATP operated. All these effects were inhibited by increasing phosphate concentration, or by adding propranolol, quinine, Zn2+ or Mg2+.
引用
收藏
页码:161 / 164
页数:4
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