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. 1988 Oct;104(4):537-43.
doi: 10.1093/oxfordjournals.jbchem.a122506.

Amino acid sequence of winged bean (Psophocarpus tetragonolobus (L.) DC.) chymotrypsin inhibitor, WCI-3

H Shibata  1 , S Hara, T Ikenaka
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Free article

Amino acid sequence of winged bean (Psophocarpus tetragonolobus (L.) DC.) chymotrypsin inhibitor, WCI-3

H Shibata et al. J Biochem. 1988 Oct.
Free article

Abstract

The complete amino acid sequence of winged bean chymotrypsin inhibitor 3 (WCI-3) was determined by the conventional methods. WCI-3 consisted of 183 amino acid residues, but was heterogeneous in the carboxyl terminal region owing to the loss of one to four carboxyl terminal amino acid residues. The sequence of WCI-3 was highly homologous with those of soybean trypsin inhibitor Tia, winged bean trypsin inhibitor WTI-1, and Erythrina latissima trypsin inhibitor DE-3. One of the reactive site peptide bonds of WCI-3 was identified as Leu(65)-Ser(66), which was located at the same position as those of the other Kunitz-family leguminous proteinase inhibitors.

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