Amino acid sequence of myoglobin from the molluscBursatella leachii

Abstract
The complete amino acid sequence of myoglobin from the triturative stomach of gastropodic molluscBursatella leachii has been determined. It is composed of 146 amino acid residues, is acetylated at the N-terminus, and contains a single histidine residue at position 95 which corresponds to the heme-binding proximal histidine. The E7 distal histidine, which is conserved widely in myoglobins and hemoglobins, is replaced by valine inBursatella myoglobin. The amino acid sequence ofBursatella myoglobin shows strong homology (73–84%) with those ofAplysia andDolabella myoglobins.

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