Transport adenosine triphosphatases: properties and functions.
Transport adenosine triphosphatases: properties and functions.
复制标题
转运三磷酸腺苷酶:性质和功能。
DOI:
10.1152/physrev.1981.61.1.1
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发表时间:
1981
影响因子:
33.6
通讯作者:
Sjoerd L. Bonting
中科院分区:
文献类型:
--
作者:
F. S. Stekhoven;Sjoerd L. Bonting
This review deal s with membrane-located ATPases that have a transport function. A common characteristic of these enzymes is that they ca talyze the sam. e overall reaction (the hydrolysis of ATP to ADP and inorganic phosphate) and utilize the free energy change of this reaction for the transport of ions against an electrochemical gradient across the membrane in which they are located. They are vectorial enzymes, in that their enzymatic activity leads to the transport of an ion in a certain direction across a membrane. The best-known examples of the transport ATPases are the Na+-and K+-activated ATPase (Na-K-ATPase) and the Ca2+-and Mg2+-activated ATPase (Ca-Mg-ATPase). The Na-K-ATPase, discovered in 1957 by Skou (340)) transports Na+ and K+. The Ca-Mg-ATPase was discovered in 1961 by Hasselbach and Makinose (120) in muscle sarcoplasmic reticulum and in 1966 by Schatzmann (296) in erythrocyte membrane, where it transports Ca2+ ions. The anion-sensitive ATPase was reported in 1965 by Durbin and Kasbekar (67) to be a transport ATPase for bicarbonate and chloride. The K+-activated ATPase (KH-ATPase), first described as a K+-activated phosphatase activity by Forte et al.(80) in 1967, appears to play a role in hydrogen ion secretion by the gastric mucosa. So far no transport ATPases have been found that play a direct role in nonionic transport.Several reviews covering certain aspects of the Na+-K+-ATPase system (31, X, 90,102,155, 170,272,313,344,347,415) and the Ca2+-Mg2+-ATPase system (54, 117-119, 298, 359) have been published. A brief review on anion-sensitive ATPase is available (336), and the KH-ATPase is discussed in three recent reviews on gastric acid secretion (285, 290, 291). Integrated reviews on all known transport ATPases, describing both their common features and their differences, are rare (33, 251).