Amino Acid Sequence of the ß-Chain of the Tetrameric Haemoglobin of the Bivalve Mollusc, Anadara trapezia

Abstract

The amino acid sequence of the iJ-chain of the principal haemoglobin from A. trapezia has been determined. The sequence was deduced from the sequences of tryptic peptides, which were fractionated using highperformance liquid chromatography and peptide mapping. Additional sequence data, particularly for the large tryptic peptides, was obtained from enzyme digests of both cyanogen bromide fragments and large citraconyitryptic peptides.