Chymotryptic inhibitor I from potatoes. The amino acid sequence of subunit A |
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Authors: | M Richardson |
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Institution: | Department of Botany, University of Durham, Durham DH1 3LE, U.K. |
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Abstract: | The amino acid sequence of subunit A of the potato chymotryptic inhibitor I was determined. The sequence was deduced from analysis of fragments and peptides derived from the protein by cleavage with cyanogen bromide, N-bromosuccinimide and dilute acid, and by digestion with trypsin, thermolysin, pepsin and papain. The molecule consists of a single polypeptide chain of 84 residues, which contains two homologous regions each of 13 amino acids. The protein does not appear to be homologous with any other known proteinase inhibitors. |
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