X-RAY-ABSORPTION SPECTROSCOPY OF ORIENTED CYTOCHROME-OXIDASE

被引:37
作者
GEORGE, GN
CRAMER, SP
FREY, TG
PRINCE, RC
机构
[1] EXXON RES & ENGN CO,ANNANDALE,NJ 08801
[2] UNIV CALIF DAVIS,DEPT APPL SCI,DAVIS,CA 95616
[3] SAN DIEGO STATE UNIV,DEPT BIOL,SAN DIEGO,CA 92182
基金
美国国家卫生研究院;
关键词
CYTOCHROME OXIDASE; MEMBRANOUS MULTILAYER; X-RAY ABSORPTION SPECTROSCOPY; EXAFS;
D O I
10.1016/0005-2728(93)90152-6
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
The polarized X-ray absorption spectra of the copper, iron and zinc sites of mitochondrial cytochrome oxidase in oriented membrane multilayers have been examined. The copper X-ray absorption edge spectra indicate the presence of a tetragonal copper, which we assign as Cu(B), oriented with the long axis approximately orthogonal to the membrane normal. We have also detected the presence of a relatively long (2.6 angstrom) Cu-S or Cu-Cl interaction, which we assign to a copper-thioether (probably Met210) coordination at the Cu(A) site, with the bond oriented along the membrane normal. The coordination of the zinc, the iron and the Cu(B) heme a3 binuclear site are discussed.
引用
收藏
页码:240 / 252
页数:13
相关论文
共 61 条
[31]  
MCMASTER WH, 1965, COMPLETATION X RAY C
[32]   CHARACTERIZATION OF FAST AND SLOW FORMS OF BOVINE HEART CYTOCHROME-C-OXIDASE [J].
MOODY, AJ ;
COOPER, CE ;
RICH, PR .
BIOCHIMICA ET BIOPHYSICA ACTA, 1991, 1059 (02) :189-207
[33]   STRUCTURE AND REACTIVITY OF MULTIPLE FORMS OF CYTOCHROME-OXIDASE AS EVALUATED BY X-RAY ABSORPTION-SPECTROSCOPY AND KINETICS OF CYANIDE BINDING [J].
NAQUI, A ;
KUMAR, C ;
CHING, YC ;
POWERS, L ;
CHANCE, B .
BIOCHEMISTRY, 1984, 23 (25) :6222-6227
[34]  
NAQUI A, 1988, J BIOL CHEM, V263, P12342
[35]  
ONISHI T, 1982, J BIOL CHEM, V257, P14821
[36]   CYTOCHROME-OXIDASE - A PERSPECTIVE [J].
PALMER, G .
PURE AND APPLIED CHEMISTRY, 1987, 59 (06) :749-758
[37]   LOW-TEMPERATURE X-RAY ABSORPTION-SPECTROSCOPY OF PLASTOCYANIN - EVIDENCE FOR COPPER-SITE PHOTOREDUCTION AT CRYOGENIC TEMPERATURES [J].
PENNERHAHN, JE ;
MURATA, M ;
HODGSON, KO ;
FREEMAN, HC .
INORGANIC CHEMISTRY, 1989, 28 (10) :1826-1832
[38]  
PENNERHAHN JE, 1991, X RAY ABSORPTION FIN, P147
[39]   MULTIPLE STRUCTURES AND FUNCTIONS OF CYTOCHROME-OXIDASE [J].
POWERS, L ;
CHANCE, B .
JOURNAL OF INORGANIC BIOCHEMISTRY, 1985, 23 (3-4) :207-217
[40]   NATURE OF THE COPPER ATOMS OF CYTOCHROME-C OXIDASE AS STUDIED BY OPTICAL AND X-RAY ABSORPTION-EDGE SPECTROSCOPY [J].
POWERS, L ;
BLUMBERG, WE ;
CHANCE, B ;
BARLOW, CH ;
LEIGH, JS ;
SMITH, J ;
YONETANI, T ;
VIK, S ;
PEISACH, J .
BIOCHIMICA ET BIOPHYSICA ACTA, 1979, 546 (03) :520-538