Models of high-valent intermediates of non-heme diiron alkane monooxygenases:: Electronic structure of a bis(μ-oxo)diiron(IV) complex with locally low-spin metal centers

被引:16
作者
Ghosh, A [1 ]
Tangen, E
Gonzalez, E
Que, L
机构
[1] Univ Tromso, Dept Chem, N-9037 Tromso, Norway
[2] Univ Minnesota, Dept Chem, Minneapolis, MN 55455 USA
[3] Univ Minnesota, Ctr Met Biocatalysis, Minneapolis, MN 55455 USA
关键词
density functional calculations; iron; O ligands; porphyrinoids;
D O I
10.1002/anie.200351768
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Insight Into the electronic structures of I high-valent intermediates with the {FeIV2(μ-O)2} diamond core" is provided by density theory calculations. These electronic structures are contrasted with nitrido-bridged heme dimers that contain metal centers with the same oxidation state. Such diamond-core intermediates might actually occur in the catalytic cycles of diiron alkane monooxygenases such as AlkB."
引用
收藏
页码:834 / 838
页数:5
相关论文
共 42 条
[1]   The non-heme diiron alkane monooxygenase of Pseudomonas oleovorans (AlkB) hydroxylates via a substrate radical intermediate [J].
Austin, RN ;
Chang, HK ;
Zylstra, GJ ;
Groves, JT .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2000, 122 (47) :11747-11748
[2]   Hydroxylation of methane by non-heme diiron enzymes: Molecular orbital analysis of C-H bond activation by reactive intermediate Q [J].
Baik, MH ;
Gherman, BF ;
Friesner, RA ;
Lippard, SJ .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2002, 124 (49) :14608-14615
[3]   REACTIONS OF TRICHLOROMETHYLTRIMETHYLSILANE WITH FERROTETRAARYLPORPHYRINS [J].
BATTIONI, JP ;
DUPRE, D ;
MANSUY, D .
JOURNAL OF ORGANOMETALLIC CHEMISTRY, 1981, 214 (03) :303-309
[4]   Peroxodiferric intermediate of stearoyl-acyl carrier protein Δ9 desaturase:: Oxidase reactivity during single turnover and implications for the mechanism of desaturation [J].
Broadwater, JA ;
Ai, JY ;
Loehr, TM ;
Sanders-Loehr, J ;
Fox, BG .
BIOCHEMISTRY, 1998, 37 (42) :14664-14671
[5]   Models of high-valent heme protein intermediates:: A quantum chemical study of iron(IV) porphyrins with two univalent axial π-bonding ligands [J].
Conradie, J ;
Swarts, JC ;
Ghosh, A .
JOURNAL OF PHYSICAL CHEMISTRY B, 2004, 108 (01) :452-456
[6]  
Costas M, 2002, ANGEW CHEM INT EDIT, V41, P2179, DOI 10.1002/1521-3773(20020617)41:12<2179::AID-ANIE2179>3.0.CO
[7]  
2-F
[8]   A synthetic model for the putative FeIV2O2 diamond core of methane monooxygenase intermediate Q [J].
Costas, M ;
Rohde, JU ;
Stubna, A ;
Ho, RYN ;
Quaroni, L ;
Münck, E ;
Que, L .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2001, 123 (51) :12931-12932
[9]   True Iron(V) and Iron(VI) porphyrins: A first theoretical exploration [J].
Dey, A ;
Ghosh, A .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2002, 124 (13) :3206-3207
[10]   Models for nonheme diiron enzymes.: Assembly of a high-valent Fe2(μ-O)2 diamond core from its peroxo precursor [J].
Dong, YH ;
Zang, Y ;
Shu, LJ ;
Wilkinson, EC ;
Que, L ;
Kauffmann, K ;
Münck, E .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1997, 119 (51) :12683-12684