Plant Molecular Biology 1992-May
Amino acid sequence of the N-terminal domain of yam (Dioscorea japonica) aerial tuber acidic chitinase. Evidence for the presence of a wheat germ agglutinin domain in matured acidic chitinase from unstressed tuber.
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The amino acid sequence of the N-terminal domain of acidic chitinase from unstressed aerial tuber was determined and proved the presence of an N-terminal domain in acidic chitinase. The amino acid sequence was determined on a pyroglutamylaminopeptidase-treated N-terminal fragment of V8 protease and on chymotryptic peptides of this fragment. The sequence determined revealed 8 residues deletion and 2 residues insertion as compared with the N-terminal domain of tobacco basic chitinase. The N-terminal domain determined showed a homology of 40% and 52% with the N-terminal domain of tobacco basic chitinase and wheat germ agglutinin, respectively.