Title

Investigation of the hyperfine properties of deoxy hemoglobin based on its electronic structure obtained by Hartree-Fock-Roothan procedure

Authors

Authors

K. R. Lata; N. Sahoo; A. Dubey; R. H. Scheicher; S. R. Badu; R. H. Pink; D. N. Mahato; A. F. Schulte; H. P. Saha; N. B. Maharjan; L. Chow;T. P. Das

Comments

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Abbreviated Journal Title

Hyperfine Interact.

Keywords

Deoxy hemoglobin; Hartree-Fock-Roothan procedure; Mossbauer data; HIGH MAGNETIC-FIELD; GAUSSIAN BASIS SETS; SYNTHETIC ANALOGS; DEOXYHEMOGLOBIN; DEOXYMYOGLOBIN; MOSSBAUER; ORIENTATION; GRADIENT; IRON; Physics, Atomic, Molecular & Chemical; Physics, Condensed Matter; Physics, Nuclear

Abstract

The electronic structure of the heme unit of deoxyhemoglobin including the proximal imidazole has been studied using the first-principles Hartree-Fock procedure. Our results for the (57m)Fe isomer shift and asymmetry parameter are in very good agreement with the values obtained from Mossbauer spectroscopy measurements. The (57m)Fe nuclear quadrupole coupling constant is smaller than the experimental result and possible ways to improve the agreement in the future are discussed. Improved analysis of the Mossbauer data, removing some approximations made for deriving the magnetic hyperfine tensor for the (57m)Fe nucleus, is suggested to allow quantitative comparison with our results in the future.

Journal Title

Hyperfine Interactions

Volume

181

Issue/Number

1-3

Publication Date

1-1-2008

Document Type

Article

Language

English

First Page

75

Last Page

80

WOS Identifier

WOS:000260281100010

ISSN

0304-3843

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