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The amino acid sequence of wood duck lysozyme
1Department of Biochemistry, School of Agriculture, Kyushu Tokai University, Kumamoto, Japan. taraki@as-1.ktokai-u.ac.jp
Abstract:
The amino acid sequence of wood duck (Aix sponsa) lysozyme was analyzed. Carboxymethylated lysozyme was digested with trypsin and the resulting peptides were sequenced. The established amino acid sequence had the highest similarity to duck III lysozyme with four amino acid substitutions, and had eighteen amino acid substitutions from chicken lysozyme. The valine at position 75 was newly detected in chicken-type lysozymes. In the active site, Tyr34 and Glu57 were found at subsites F and D, respectively, when compared with chicken lysozyme.
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