Abstract
A 21-kDa protein extracted from woody tissue underlying the pedicel of kiwifruit (Actinidia deliciosa var deliciosa [A Chev] Liang and Ferguson) was purified to homogeneity by cation exchange, gel filtration, sodium dodecyl sulphate polyacrylamide gel electrophoresis (SDS-PAGE) on a 15% gel and electro-transfer onto a polyvinylidene difluoride (PVDF) membrane, followed by excision of the band of interest. Amino terminal sequence analysis of this band revealed a high degree of homology with basic endochitinase (EC 3.2.1.14) in orange and thaumatin-like proteins in tobacco, barley, maize and tomato. This is the first record of a thaumatin-like protein in a subtropical berryfruit. Potential implications of this finding and the need for future research are discussed. © 1999 Society of Chemical Industry
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