WHAT IS THE TRUE ATPASE ACTIVITY OF CONTRACTING MYOFIBRILS

被引：20

作者：

HOUADJETO, M ^{[1
]}

BARMAN, T ^{[1
]}

TRAVERS, F ^{[1
]}

机构：

[1] CNRS,INSERM,U128,BP 5051,F-34033 MONTPELLIER 1,FRANCE

来源：

FEBS LETTERS | 1991年 / 281卷 / 1-2期

关键词：

MYOFIBRIL; CONTRACTION; ACTOMYOSIN; ATPASE ACTIVITY;

D O I：

10.1016/0014-5793(91)80369-E

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 ATPase activity of contracting myofibrils was obtained in a solvent of ionic contents that mimic in vivo conditions: pH 7.4 and 0.1 M potassium acetate. Contracting myofibrils are fleeting structures and their ATPase activity is of short duration: even at 4-degrees-C it was over after a reaction time of 1 s and rapid reaction equipment was needed for its study. The ATPase (1.1 s-1) was very similar to that of crosslinked actoS1 (1 s-1). It was 100 x that of relaxed myofibrils.

引用

页码：105 / 107

页数：3

共 15 条

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