alexa Primary structures of proteinase inhibitors from Phaseolus vulgaris var. nanus (cv. Borlotto).
Pharmaceutical Sciences

Pharmaceutical Sciences

Journal of Pharmacognosy & Natural Products

Author(s): Funk A, Weder JK, Belitz HD

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Abstract The primary structures of two trypsin-chymotrypsin inhibitors from Phaseolus vulgaris var. nanus (bush bean, cv. Borlotto), PVI-3(2) und PVI-4, were derived from automated Edman degradation data, amino acid composition and manual Edman degradation results of enzymatic fragments and homology with other Bowman-Birk type proteinase inhibitors. The highest degrees of homology were observed between PVI-3(2) or PVI-4 and the trypsin-chymotrypsin inhibitors from lima beans (LBI I, IV and IV', 86\%), black-eyed peas (BTCI, 81\%), and, in part, adzuki beans (ABI I, II and II', 74-77\%). Similarly, the primary structure of the trypsin-elastase inhibitor from the same source, PVI-3(1), was deduced which showed highest homology with that of the trypsin-elastase inhibitor GBI II from garden beans (92\%), followed by GBI II' from garden beans (86\%) and C-II from soybeans (71\%). In contrast, homology between PVI-3(2) and PVI-4 on the one hand and PVI-3(1) on the other was relatively low (61\%).
This article was published in Z Lebensm Unters Forsch and referenced in Journal of Pharmacognosy & Natural Products

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