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. 2012 Jan 16;13(1):879–900. doi: 10.3390/ijms13010879

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© 2012 by the authors; licensee Molecular Diversity Preservation International, Basel, Switzerland.

This article is an open-access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/3.0/).

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Comparison of the cSOD1 active site residues of Camelus dromedarius (yellow) with Homo sapiens (blue) (A) and Bos taurus (deepteal) (B). Copper is shown in purple and zinc green color. The active site of the SOD1 from the three organisms contains the highly conserved His and Asp residues. Copper is liganded with four histidines (His 46, 48, 63 and 120) and zinc is liganded with three histidines and one aspartic (His 63, 71, 80 and Asp 83). The residues are numbered according to amino acid sequence of Camelus dromedarius (accession number JF758876). This comparison indicated very high similarity between the predicted active site of cSOD1 and that of hSOD1 and bSOD1.