1,2,3-tris-tri-beta-phenylethylaminopropane (a compound which can simultaneously interact with S1- and S2'-enzyme sites and has complicated grouping in the region analogous to "leaving group" of a substrate) has been studied for the effect on chymotriptic hydrolysis. Anomalously high inhibitory effect of some cumbersome organic compounds is explained on the base of the obtained data.
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