Hyperfine evidence of strong double exchange in multimetallic {[Fe4S4]-Fe} active center of Escherichia coli sulfite reductase

被引：23

作者：

Belinsky, MI

机构：

[1] School of Chemistry, Sackler Faculty of Extract Sciences, Tel Aviv University

来源：

JOURNAL OF BIOLOGICAL INORGANIC CHEMISTRY | 1996年 / 1卷 / 02期

关键词：

D O I：

10.1007/s007750050041

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 spin-coupling model of the {[Fe4S4]-Fe} center of the active site of sulfite reductase, which includes the Heisenberg exchange and double-exchange interactions, explains the peculiarities of the induced paramagnetism. The effective hyperfine constants of the SiR(-1)-NO complex are explained in the model with maximal pair spins S-12=S-34=9/2 in the ground state formed by strong double exchange.

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页码：186 / 188

页数：3

相关论文

共 71 条

[21]

BERTINI I, 1995, STRUCT BOND, V83, P1

[22] DOUBLE EXCHANGE VERSUS J INEQUALITY IN FE3S40 CLUSTERS [J].

BERTINI, I ;

BRIGANTI, F ;

LUCHINAT, C .

INORGANICA CHIMICA ACTA, 1990, 175 (01) :9-10

[23] H-1-NMR SPECTROSCOPY AND THE ELECTRONIC-STRUCTURE OF THE HIGH-POTENTIAL IRON SULFUR PROTEIN FROM CHROMATIUM-VINOSUM [J].

BERTINI, I ;

BRIGANTI, F ;

LUCHINAT, C ;

SCOZZAFAVA, A ;

SOLA, M .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1991, 113 (04) :1237-1245

[24] INTERPLAY OF ELECTRON EXCHANGE AND ELECTRON-TRANSFER IN METAL POLYNUCLEAR COMPLEXES IN PROTEINS OR CHEMICAL-MODELS [J].

BLONDIN, G ;

GIRERD, JJ .

CHEMICAL REVIEWS, 1990, 90 (08) :1359-1376

[25] DOUBLE EXCHANGE AND VIBRONIC COUPLING IN MIXED-VALENCE SYSTEMS - ELECTRONIC-STRUCTURE OF EXCHANGE-COUPLED SIROHEME-[FE4S4](2+) CHROMOPHORE IN OXIDIZED ESCHERICHIA-COLI SULFITE REDUCTASE [J].

BOMINAAR, EL ;

HU, ZG ;

MUNCK, E ;

GIRERD, JJ ;

BORSHCH, SA .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1995, 117 (26) :6976-6989

[26] DOUBLE-EXCHANGE AND VIBRONIC COUPLING IN MIXED-VALENCE SYSTEMS - ELECTRONIC-STRUCTURE OF [FE4S4](3+) CLUSTERS IN HIGH-POTENTIAL IRON PROTEIN AND RELATED MODELS [J].

BOMINAAR, EL ;

BORSHCH, SA ;

GIRERD, JJ .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1994, 116 (12) :5362-5372

[27] SYNTHESIS AND ELECTRON DELOCALIZATION OF [FE4S4]-S-FE(III) BRIDGED ASSEMBLIES RELATED TO THE EXCHANGE-COUPLED CATALYTIC SITE OF SULFITE REDUCTASES [J].

CAI, LS ;

HOLM, RH .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1994, 116 (16) :7177-7188

[28]

CHRISTNER JA, 1983, J BIOL CHEM, V258, P1147

[29]

CHRISTNER JA, 1981, J BIOL CHEM, V256, P2098

[30]

CHRISTNER JA, 1983, J BIOL CHEM, V258, P1157

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