Enzyme inhibitors from plants: Enterokinase inhibitors in tubers and seeds
Journal of Biosciences(1981)
Abstract
Of the 22 tubers and 9 pulses screened for inhibitors of enterokinase activity, the following 12 tubers,Curcuma amada, Kyllinga monocephala, Solanum tuberosum, Canna indica, Helianthus tuberosus, Coleus parviformis, Mirabilis
jalapa, Colocasia antiquorum (red variety),Alium cepa, Amorphophalus companulatus, Maranta arundinacea, Daucus carota, and 9 pulses namely,Vigna sinensis, Arachis hypogea, Pisum sativum, Phaseolus vulgaris (white bean),Phaseolus vulgaris (kidney bean),Phaseolus mungo, Cicer arietinum, Dolichos lablab and Cajonus cajan contained inhibitory activity. Three tubers,Amorphophalus companulatus, Maranta arundinacea andDaucus carota and all the nine pulses exhibited endogenous esterase activity towards benzoyl arginine ethyl ester. Among the 8 pulses and
3 tubers processed by affinity chromatography on trypsin-sepharose, to separate trypsin inhibitor from enterokinase inhibitor,Phaseolus vulgaris (kidney bean),Phaseolus vulgaris (white bean) andDolichos lablab contained distinct enterokinase inhibitors. These fractions were devoid of trypsin inhibitor activity. The trypsin inhibitor
fromColeus parviformis tubers alone did not bind to trypsinsepharose and was recovered in the unbound fraction along with the enterokinase inhibitor.
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Key words
proteinase inhibitors,. enterokinase inhibitors,trypsin inhibitors,pulses.,tubers,Enterokinase inhibitors,pulses
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