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Biological Chemistry

Editor-in-Chief: Brüne, Bernhard

Editorial Board: Buchner, Johannes / Lei, Ming / Ludwig, Stephan / Sies, Helmut / Thomas, Douglas D. / Turk, Boris / Wittinghofer, Alfred

IMPACT FACTOR 2017: 3.022

CiteScore 2017: 2.81

SCImago Journal Rank (SJR) 2017: 1.562
Source Normalized Impact per Paper (SNIP) 2017: 0.705

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Volume 383, Issue 12


The Primary Structure of Three Hemoglobin Chains from the Indigo Snake (Drymarchon corais erebennus, Serpentes): First Evidence for αD Chains and Two β Chain Types in Snakes

M. Stoeckelhuber / T. Gorr / T. Kleinschmidt
Published Online: 2005-06-01 | DOI: https://doi.org/10.1515/BC.2002.214


The hemoglobin of the indigo snake (Drymarchon corais erebennus, Colubrinae) consists of two components, HbA and HbD, in the ratio of 1:1. They differ in both their α and β chains. The amino acid sequences of both α chains (αA and αD) and one β chain (βI) were determined. The presence of an αDchain in a snake hemoglobin is described for the first time. A comparison of all snake β chain sequences revealed the existence of two paralogous β chain types in snakes as well, which are designated as βI and βII type. For the discussion of the physiological properties of Drymarchon hemoglobin, the sequences were compared with those of the human α and β chains and those of the closely related water snake Liophis miliaris where functional data are available. Among the heme contacts, the substitution αD58(E7)His->Gln is unusual but most likely without any effect. The residues responsible for the main part of the Bohr effect are the same as in mammalian hemoglobins. In each of the three globin chains only two residues at positions involved in the α1/_2 interface contacts, most important for the stability and the properties of the hemoglobin molecule, are substituted with regard to human hemoglobin. On the contrary, nine, eleven, and six α1/β1 contact residues are replaced in the αA, αD, βI chains, respectively.

About the article

Published Online: 2005-06-01

Published in Print: 2002-12-09

Citation Information: Biological Chemistry, Volume 383, Issue 12, Pages 1907–1916, ISSN (Print) 1431-6730, DOI: https://doi.org/10.1515/BC.2002.214.

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