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  • Title: Primary structures of proteinase inhibitors from Phaseolus vulgaris var. nanus (cv. Borlotto).
    Author: Funk A, Weder JK, Belitz HD.
    Journal: Z Lebensm Unters Forsch; 1993 Apr; 196(4):343-50. PubMed ID: 8493818.
    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%).
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