期刊
PFLUGERS ARCHIV-EUROPEAN JOURNAL OF PHYSIOLOGY
卷 447, 期 6, 页码 840-844出版社
SPRINGER
DOI: 10.1007/s00424-003-1214-9
关键词
creatine kinase; hexokinase; transgenic mouse; VDAC; diffusion
类别
The response of mitochondrial oxygen consumption to ADP in saponin-skinned cardiac fibre bundles has an apparent K-m an order of magnitude higher than that in isolated mitochondria. Here we report that incubating skinned cardiac fibre bundles from wild-type mice or double-knockout mice lacking both cytosolic and mitochondrial creatine kinase (CK) with CK and creatine or with yeast hexokinase and glucose as extramitochondrial ADP-producing systems decreases the apparent K-m of the bundles for ADP severalfold. We conclude that the affinity of mitochondria for ADP in mouse heart is of the same order of magnitude as that of isolated mitochondria, while the high apparent K-m of the bundles is caused by diffusion gradients outside the mitochondria.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据