Primary structure of alpha-globin chains from river buffalo (Bubalus bubalis L.) hemoglobins |
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Authors: | Ferranti P Facchiano A Zappacosta F Vincenti D Rullo R Masala B Di Luccia A |
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Affiliation: | (1) Dipartimento di Scienza degli Alimenti, Università Federico II,, Naples, Italy;(2) Servizio di spettrometria di Massa, Università di Napoli, I-80131 Naples, Italy;(3) ISA-CNR, 83100 Avellino, Italy;(4) Servizio di spettrometria di Massa, Università di Napoli, I-80131 Naples, Italy;(5) IABBAM-CNR, I-80147 Naples, Italy;(6) Dipartimento di Scienze Fisiologiche, Biochimiche e Cellulari, 25, I-07100 Sassari, Italy |
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Abstract: | Primary structure analysis of the four river buffalo -globin chains showed that haplotypes A and B differ from each other by a substitution at codon 64 that may encode Ala or Asn. The A haplotype encodes two -globin chains, I1 and II3, which differ at positions 129 and 131: I1 has 64 Ala, 129 Phe, 131 Asn; II3 has 64 Ala, 129 Leu, 131 Ser. The B haplotype encodes two -globin chains, I2 and II4, which differ at positions 10 and 11: I2 has 10 Ile, 11 Gln, 64 Asn; II4 has 10 Val, 11 Lys, 64 Asn. Apart from the Ala/Asn polymorphism at position 64, amino acid substitutions in allelic and nonallelic -globin chains seem to have arisen by single point mutations. Detection of electrophoretically silent mutations due to neutral amino acid substitutions and their influence on the isoelectric point are discussed. Furthermore, primary structures of river buffalo -globin chains are compared to other species of the Bovidae family to suggest evolutionary events that have characterized the amino acid substitutions of river buffalo hemoglobin. |
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Keywords: | /content/v6358q47l1l18m33/xxlarge945.gif" alt=" agr" align=" BASELINE" BORDER=" 0" >-Globin chain primary structure river buffalo hemoglobin molecular modeling mass spectrometry |
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