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Activation of hydrogen peroxide by copper (II) complexes with some histidine-containing peptides and their SOD-like activities.

Abstract：

:The reactivities of copper(II) complexes with histidine-containing oligopeptides towards active oxygen species such as hydrogen peroxide (H2O2) and superoxide ion (O2-) were investigated by electron spin resonance (ESR)-spin trapping and thiobarbituric acid (TBA) methods. At physiological pH values, Cu(II) complexes with oligopeptides containing histidyl residue at the N-terminal could more easily activate H2O2 to yield hydroxyl radical (.OH) than other Cu(II)-oligopeptide complexes containing histidyl residue in the second or third position. Further, it was suggested that since all Cu(II)-oligopeptide complexes examined could scavenge O2-, these complexes have SOD-like activities.

journal_name

J Inorg Biochem

journal_title

Journal of inorganic biochemistry

authors

Ueda J,Ozawa T,Miyazaki M,Fujiwara Y

doi

10.1016/0162-0134(94)85034-8

subject

Has Abstract

pub_date

1994-08-01 00:00:00

pages

123-30

issue

2

eissn

0162-0134

issn

1873-3344

pii

0162-0134(94)85034-8

journal_volume

55

pub_type

杂志文章

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