Woodfield K, Rück A, Brdiczka D, Halestrap A P
Department of Biochemistry, School of Medical Sciences, University of Bristol, Bristol BS8 1TD, U.K.
Biochem J. 1998 Dec 1;336 ( Pt 2)(Pt 2):287-90. doi: 10.1042/bj3360287.
A fusion protein between cyclophilin-D (CyP-D) and glutathione S-transferase (GST) was shown to bind to purified liver inner mitochondrial membranes (IMMs) in a cyclosporin A (CsA)-sensitive manner. Binding was enhanced by diamide treatment of the IMMs. Immobilized GST-CyP-D avidly bound a single 30 kDa protein present in Triton X-100-solubilized IMMs; immunoblotting showed this to be the adenine nucleotide translocase (ANT). Binding was prevented by pretreatment of the CyP-D with CsA, but not with cyclosporin H. Purified ANT also bound specifically to GST-CyP-D, but porin did not, even in the presence of ANT.
亲环蛋白-D(CyP-D)与谷胱甘肽S-转移酶(GST)之间的融合蛋白被证明以环孢菌素A(CsA)敏感的方式与纯化的肝脏线粒体内膜(IMM)结合。通过二酰胺处理IMM可增强结合。固定化的GST-CyP-D能强烈结合Triton X-100溶解的IMM中存在的一种30 kDa单一蛋白质;免疫印迹显示这是腺嘌呤核苷酸转位酶(ANT)。用CsA预处理CyP-D可阻止结合,但用环孢菌素H预处理则不能。纯化的ANT也能特异性结合GST-CyP-D,但孔蛋白即使在ANT存在的情况下也不能结合。