though the speculated catechol dioxygenase would most likely be symbiotic bacteria-derived, as most members of the catechol dioxygenase enzyme family are bacterial in origin, it could, nevertheless also have been naturally expressed by the T. chebula's genome, as plant-derived members do exist.
A comparative analysis of the IC50 values of the isolates showed them as either comparable or better inhibitors of HCV NS3/4A protease than embelin, an established non-tannin small molecule HCV NS3/4A protease inhibitor
From the point of view of providing template for a detailed Structure Activity Relationship (SAR) study, it is interesting to conjecture hydrolysable tannin structure-correlated HCV NS3/4A protease inhibition profile from our set of preliminary data as follows. By and large, the presence of galloyl frameworks could be fundamental to activity as the galloyl moiety was common to all the tested compounds with a partial correlation between activity and number of galloyl units. However, the influence of oxidative coupling of the galloyl groups on activity appeared to be an overriding factor, as the hexahydroxydiphenoyl (HHDP) moiety – containing isolates (i.e., ellagic acid and ellagitannin isolates)
though the speculated catechol dioxygenase would most likely be symbiotic bacteria-derived, as most members of the catechol dioxygenase enzyme family are bacterial in origin, it could, nevertheless also have been naturally expressed by the T. chebula's genome, as plant-derived members do exist. A comparative analysis of the IC50 values of the isolates showed them as either comparable or better inhibitors of HCV NS3/4A protease than embelin, an established non-tannin small molecule HCV NS3/4A protease inhibitor From the point of view of providing template for a detailed Structure Activity Relationship (SAR) study, it is interesting to conjecture hydrolysable tannin structure-correlated HCV NS3/4A protease inhibition profile from our set of preliminary data as follows. By and large, the presence of galloyl frameworks could be fundamental to activity as the galloyl moiety was common to all the tested compounds with a partial correlation between activity and number of galloyl units. However, the influence of oxidative coupling of the galloyl groups on activity appeared to be an overriding factor, as the hexahydroxydiphenoyl (HHDP) moiety – containing isolates (i.e., ellagic acid and ellagitannin isolates)
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