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Effects of pH and ligand binding upon the conformation of Cellobiohydrolase I (CBHI) and endoglucanase I (EGI) from Trichoderma pseudokiningii S-38 have been studied by circular dichroism measurements. In the high-pH range (6–9), increasing pH resulted in a similar conformational change occurring in free CBHI and EGI, while such treatment gave different changes of the two enzyme conformations in the...