红细胞钙离子泵ATP酶的化学计量学。
The stoichiometry of the Ca2+-pumping ATPase of erythrocytes.
作者信息
Clark A, Carafoli E
出版信息
Cell Calcium. 1983 Apr;4(2):83-8. doi: 10.1016/0143-4160(83)90037-4.
PMID:6135511
Abstract
The stoichiometry of the erythrocyte Mg2+ dependent Ca2+-stimulated ATPase has been determined in a reconstituted system. Purified Ca2+ ATPase was incorporated into calcium impermeable liposomes and the ATP dependent calcium uptake was determined simultaneously with the hydrolysis of ATP. The results indicate that 1 gram atom of calcium is transported for each gram molecule of ATP hydrolysed, i.e., an ATP/Ca2+-stoichiometry of 1.
摘要
在一个重组系统中测定了红细胞镁离子依赖的钙离子刺激型ATP酶的化学计量关系。将纯化的钙离子ATP酶整合到钙离子不可渗透的脂质体中，并在ATP水解的同时测定ATP依赖的钙离子摄取。结果表明，每水解1克分子ATP可转运1克原子的钙，即ATP与钙离子的化学计量比为1。
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