Abstract
Cobra snakeNaja naja naja hemoglobin shows four bands on Triton electrophoresis. We present the primary structure of oneα and oneβ chain. The separation of polypeptide chains was achieved by ion exchange chromatography on carboxymethyl cellulose column. The amino acid sequence was established by automatic Edman degradation of the native chains and tryptic and hydrolytic peptides in a gas-phase sequencer. The structural data are compared with those of human and other reptile hemoglobins and reveal not only large variations from human but within reptiles. The amino acid exchanges involve several subunit contacts and heme binding sites. This is the first study on the hemoglobin of a land snake. There are only two amino acid sequences of sea snake hemoglobin (Microcephalophis gracilis gracilis andLiophis miliaris) reported in the literature.
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Naqvi, S., Abbasi, A. & Zaidi, Z.H. Primary structure of hemoglobin from cobraNaja naja naja. J Protein Chem 13, 669–679 (1994). https://doi.org/10.1007/BF01886951
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DOI: https://doi.org/10.1007/BF01886951