F1FO-ATP SYNTHASE FROM BOVINE HEART-MITOCHONDRIA - DEVELOPMENT OF THE PURIFICATION OF A MONODISPERSE OLIGOMYCIN-SENSITIVE ATPASE

被引：40

作者：

LUTTER, R ^{[1
]}

SARASTE, M ^{[1
]}

VANWALRAVEN, HS ^{[1
]}

RUNSWICK, MJ ^{[1
]}

FINEL, M ^{[1
]}

DEATHERAGE, JF ^{[1
]}

WALKER, JE ^{[1
]}

机构：

[1] MRC,MOLEC BIOL LAB,HILLS RD,CAMBRIDGE CB2 2QH,ENGLAND

来源：

BIOCHEMICAL JOURNAL | 1993年 / 295卷

关键词：

D O I：

10.1042/bj2950799

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：

A new procedure for the isolation of ATP synthase from bovine mitochondria has been developed, with the primary objective of producing enzyme suitable for crystallization trials. Proteins were extracted from mitochondrial membranes with dodecyl-beta-D-maltoside, and the ATP synthase was purified from the extract in the presence of the same detergent by a combination of ion-exchange and gel-filtration chromatography and ammonium sulphate precipitation. This simple and rapid procedure yields 20-30 mg of highly pure and monodisperse enzyme, evidently consisting of 14 different subunits, amongst them, in apparently stoichiometric amounts with the established subunits, subunit e, a recently discovered subunit of unknown function. The enzyme preparation has an oligomycin-sensitive ATP hydrolysis activity, and so the F1 domain is functionally associated with the membrane domain, F0. In contrast with the N-termini of some of the subunits of bovine mitochondrial F1-ATPase, those of the F1F0-ATP synthase are not degraded by proteolysis during the isolation procedure. This preparation therefore satisfies prerequisites for crystallization trials.

引用

页码：799 / 806

页数：8

共 35 条

[1] INHERENT ASYMMETRY OF THE STRUCTURE OF F1-ATPASE FROM BOVINE HEART-MITOCHONDRIA AT 6.5 ANGSTROM RESOLUTION [J].