Copper(II) compound with long Cu(II)-phenolic oxygen atom bonding as galactose oxidase model

被引：30

作者：

Ito, S

Nishino, S

Itoh, H

Ohba, S

Nishida, Y ^{[1
]}

机构：

[1] Yamagata Univ, Fac Sci, Dept Chem, Yamagata 990, Japan

[2] Keio Univ, Fac Sci & Technol, Dept Chem, Yokohama, Kanagawa 223, Japan

来源：

POLYHEDRON | 1998年 / 17卷 / 10期

关键词：

long Cu(II)-phenol bond; galactose oxidase model; tyrosine residue;

D O I：

10.1016/S0277-5387(97)00458-0

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

A crystal structure determination of Cu(phpyH)ClClO4 . CH3OH revealed that the protonated phenolic oxygen atom lies at the apex of a square pyramidal CuN4O arrangement with Cu(II)-O(phenolic) distances of 2.46 and 2.57 Angstrom; this is a novel copper(II) model compound for galactose oxidase where the Cu(II)-phenolic oxygen (Tyrosine-495) distance is rather long, 2.69 Angstrom, and the present results may provide chemical evidence for possible participation of Tyrosine-495 in the oxidation of galactose. (C) 1998 Elsevier Science Ltd. All rights reserved.

引用

页码：1637 / 1642

页数：6

共 13 条

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