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一种依赖钙离子且具有选择性的离子载体,作为肌浆网中依赖钙离子和镁离子的三磷酸腺苷酶的一部分。

A Ca++-dependent and -selective ionophore as part of the Ca++ plus Mg++-dependent adenosinetriphosphatase of sarcoplasmic reticulum.

作者信息

Shamoo A E, MacLennan D H

出版信息

Proc Natl Acad Sci U S A. 1974 Sep;71(9):3522-6. doi: 10.1073/pnas.71.9.3522.

DOI:10.1073/pnas.71.9.3522
PMID:4279408
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC433806/
Abstract

Solubilized Ca(++) + Mg(++)-dependent adenosinetriphosphatase (EC 3.6.1.3; ATP diphosphohydrolase) from sarcoplasmic reticulum increased bimolecular lipid membrane (oxidized cholesterol) conductance several hundred-fold. The relative conductance change and the relative permeability elicited by this material has the following sequence: Ba(++) > Ca(++) > Sr(++) > Mg(++) > Mn(++) > Zn(++), Na(+), K(+), Cs(+), Li(+), and Rb(+). Zn(++) and Na(+) strongly inhibit the increase in Ca(++) conductance obtained with solubilized Ca(++) + Mg(++)-dependent adenosinetriphosphatase. The Ca(++)-ionophore is an integral part of the Ca(++) + Mg(++)-dependent adenosinetriphosphatase enzyme and may function as a Ca(++)-carrier in the overall Ca(++)-pump of sarcoplasmic reticulum.

摘要

来自肌浆网的可溶性钙(++)+镁(++)依赖性三磷酸腺苷酶(EC 3.6.1.3;ATP二磷酸水解酶)使双分子脂质膜(氧化胆固醇)的电导率增加了数百倍。该物质引起的相对电导率变化和相对渗透率具有以下顺序:钡(++)>钙(++)>锶(++)>镁(++)>锰(++)>锌(++)、钠(+)、钾(+)、铯(+)、锂(+)和铷(+)。锌(++)和钠(+)强烈抑制可溶性钙(++)+镁(++)依赖性三磷酸腺苷酶所导致的钙(++)电导率增加。钙(++)离子载体是钙(++)+镁(++)依赖性三磷酸腺苷酶的一个组成部分,并且可能在肌浆网的整体钙(++)泵中作为钙(++)载体发挥作用。

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A Ca++-dependent and -selective ionophore as part of the Ca++ plus Mg++-dependent adenosinetriphosphatase of sarcoplasmic reticulum.一种依赖钙离子且具有选择性的离子载体,作为肌浆网中依赖钙离子和镁离子的三磷酸腺苷酶的一部分。
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本文引用的文献

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POTENTIAL, IMPEDANCE, AND RECTIFICATION IN MEMBRANES.膜的电位、阻抗和整流。
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Ion transport through excitability-inducing material (EIM) channels in lipid bilayer membranes.离子通过脂质双分子层膜中诱导兴奋性物质(EIM)通道的运输。
J Gen Physiol. 1972 Jul;60(1):72-85. doi: 10.1085/jgp.60.1.72.
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NA + -selective ionophoric material derived from electric organ and kidney membranes.源自电鳗器官和肾膜的钠选择性离子载体材料。
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Structural components of the sarcoplasmic reticulum membrane.肌浆网(肌质网)膜的结构成分。
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Reconstitution of a calcium pump using defined membrane components.使用特定膜成分重建钙泵。
Proc Natl Acad Sci U S A. 1974 Mar;71(3):622-6. doi: 10.1073/pnas.71.3.622.
6
Surface particles of sarcoplasmic reticulum membranes. Structural features of the adenosine triphosphatase.肌浆网膜的表面颗粒。三磷酸腺苷酶的结构特征。
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7
Isolation of a high affinity calcium-binding protein from sarcoplasmic reticulum.从肌浆网中分离出一种高亲和力钙结合蛋白。
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8
Reconstitution of a calcium pump with phospholipids and a purified Ca ++ - adenosine triphosphatase from sacroplasmic reticulum.用磷脂和从肌质网中纯化的Ca++ - 三磷酸腺苷酶重建钙泵。
J Biol Chem. 1972 Dec 25;247(24):8198-200.
9
Isolation of a calcium-sequestering protein from sarcoplasmic reticulum.
Proc Natl Acad Sci U S A. 1971 Jun;68(6):1231-5. doi: 10.1073/pnas.68.6.1231.
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Membrane formation by the adenosine triphosphatase of sarcoplasmic reticulum.肌质网三磷酸腺苷酶形成的膜
J Biol Chem. 1971 Apr 25;246(8):2702-10.