Structures of deoxy- and carbonmonoxy-erythrocruorin

The structures of the deoxy and carbonmonoxy derivatives of the insect haemoglobin erythrocruorin have been determined by difference Fourier syntheses. In deoxyerythrocruorin the iron atom of the haem group was found to be five-coordinated. The carbonmonoxy- versus deoxy- difference map showed that...

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Published inJournal of molecular biology Vol. 52; no. 2; pp. 349,IN13,351 - 350,IN13,354
Main Authors Huber, Robert, Epp, Otto, Formanek, Helmut
Format Journal Article
LanguageEnglish
Published England Elsevier Ltd 14.09.1970
Subjects
Blood Proteins
Carbon Monoxide
Insecta
Mathematics
Models, Structural
X-Ray Diffraction
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ISSN0022-2836
1089-8638
DOI10.1016/0022-2836(70)90035-5

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Summary:The structures of the deoxy and carbonmonoxy derivatives of the insect haemoglobin erythrocruorin have been determined by difference Fourier syntheses. In deoxyerythrocruorin the iron atom of the haem group was found to be five-coordinated. The carbonmonoxy- versus deoxy- difference map showed that the carbon monoxide molecule is inclined to the haem plane. Slight structural changes could be observed to take place on carbon monoxide binding. These structural changes are probably due to the difference in spin state between deoxy- and carbonmonoxy haemoglobin.
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ISSN:0022-2836
1089-8638
DOI:10.1016/0022-2836(70)90035-5