ENDOR Study of Oxoiron(IV) Porphyrin π-Cation Radical Complexes as Models for Compound I of Heme Enzymes

被引：1

作者：

Takahashi, Akihiro ^{[1
,2
,3
]}

Ohba, Yasunori ^{[4
]}

Yamauchi, Seigo ^{[4
]}

Fujii, Hiroshi ^{[1
,2
,3
]}

机构：

[1] Natl Inst Nat Sci, Inst Mol Sci, Okazaki, Aichi 4448787, Japan

[2] Natl Inst Nat Sci, Okazaki Inst Integrat Biosci, Okazaki, Aichi 4448787, Japan

[3] Grad Univ Adv Studies, Dept Funct Mol Sci, Okazaki, Aichi 4448787, Japan

[4] Tohoku Univ, Inst Multidisciplinary Res Adv Mat, Sendai, Miyagi 9808577, Japan

来源：

CHEMISTRY LETTERS | 2009年 / 38卷 / 01期

基金：

日本科学技术振兴机构;

关键词：

ELECTRONIC-STRUCTURE; REACTIVITY; IRON; EPR;

D O I：

10.1246/cl.2009.68

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Electron nuclear double resonance (ENDOR) spectroscopy of oxoiron(IV) porphyrin pi-cation radical complexes with pyrrole beta-substituted porphyrins is reported. Hyperfine coupling constants (A(H)) of the pyrrole beta-methyl groups were determined. Comparison of the A H values with those of compound I of peroxidase and catalase indicated the a(Iu) porphyrin pi-cation radical states of these compound I.

引用

页码：68 / 69

页数：2

共 11 条

[1] EPR AND ENDOR DETECTION OF COMPOUND-I FROM MICROCOCCUS-LYSODEIKTICUS CATALASE [J].

BENECKY, MJ ;

FREW, JE ;

SCOWEN, N ;

JONES, P ;

HOFFMAN, BM .

BIOCHEMISTRY, 1993, 32 (44) :11929-11933

[2]

Dunford H.B., 1999, Heme Peroxidases

[3] Electronic structure and reactivity of high-valent oxo iron porphyrins [J].

Fujii, H .

COORDINATION CHEMISTRY REVIEWS, 2002, 226 (1-2) :51-60

[4] EFFECTS OF THE ELECTRON-WITHDRAWING POWER OF SUBSTITUENTS ON THE ELECTRONIC-STRUCTURE AND REACTIVITY IN OXOIRON(IV) PORPHYRIN PI-CATION RADICAL COMPLEXES [J].

FUJII, H .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1993, 115 (11) :4641-4648

[5] ESR studies of A(1u) and A(2u) oxoiron(IV) porphyrin pi-cation radical complexes. Spin coupling between ferryl iron and A(1u)/A(2u) orbitals [J].

Fujii, H ;

Yoshimura, T ;

Kamada, H .

INORGANIC CHEMISTRY, 1996, 35 (08) :2373-2377

[6] EPR investigation of compound I in Proteus mirabilis and bovine liver catalases: Formation of porphyrin and tyrosyl radical intermediates [J].

Ivancich, A ;

Jouve, HM ;

Sartor, B ;

Gaillard, J .

BIOCHEMISTRY, 1997, 36 (31) :9356-9364

[7] Rapid freeze-quench ENDOR study of chloroperoxidase compound I: The site of the radical [J].

Kim, SH ;

Perera, R ;

Hager, LP ;

Dawson, JH ;

Hoffman, BM .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2006, 128 (17) :5598-5599

[8] IDENTIFICATION OF A PORPHYRIN PI-CATION-RADICAL IN ASCORBATE PEROXIDASE COMPOUND-I [J].

PATTERSON, WR ;

POULOS, TL ;

GOODIN, DB .

BIOCHEMISTRY, 1995, 34 (13) :4342-4345

[9] O-17 ENDOR OF HORSERADISH-PEROXIDASE COMPOUND I [J].

ROBERTS, JE ;

HOFFMAN, BM ;

RUTTER, R ;

HAGER, LP .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1981, 103 (25) :7654-7656

[10]

ROBERTS JE, 1981, J BIOL CHEM, V256, P2118

← 1 2 →