Abstract
A new lectin (designated CBL1) from tamarillo fruit ( Cyphomandra betacea Sendt., Solanaceae) was identified and purified to apparent homogeneity by chitin affinity chromatography followed by ion-exchange chromatography. The molecular mass of CBL1 was 25 000 determined by sodium dodecyl sulphate-polyacrylamide gel electrophoresis. CBL1 is an abundant, heat stable protein. Amino acid composition analysis showed abundant residues of Cys, Gly, Glx, Ser, Pro and Asx. Hydroxyproline residues were also present. The hemagglutination caused by CBL1 was most readily inhibited by N, N′, N″, N‴-tetraacetylchitotetraose.
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