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Increase of the Fe effective charge in hemoproteins during oxygenation process.

Abstract：

:The x-ray absorption near edge structure (XANES) spectra of hemoglobin and myoglobin have been measured at the wiggler beam line of the Frascati Synchrotron Radiation Facility. The energy shifts of the iron absorption jump edge and the chemical shifts of the bound excited state at threshold of 1s core excitations, going from deoxygenated to oxygenated form, are interpreted as evidence of some increase of the positive effective charge on the iron atom upon oxygenation.

journal_name

Biochem Biophys Res Commun

journal_title

Biochemical and biophysical research communications

authors

Bianconi A,Congiu-Castellano A,Dell'Ariccia M,Giovannelli A,Burattini E,Durham PJ

doi

10.1016/0006-291x(85)91775-9

subject

Has Abstract

pub_date

1985-08-30 00:00:00

pages

98-102

issue

1

eissn

0006-291X

issn

1090-2104

pii

0006-291X(85)91775-9

journal_volume

131

pub_type

杂志文章

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