His92Ala mutation in ribonuclease T1 induces segmental flexibility. An X-ray study.


In the genetically mutated ribonuclease T1 His92Ala (RNase T1 His92Ala), deletion of the active site His92 imidazole leads to an inactive enzyme. Attempts to crystallize RNase T1 His92Ala under conditions used for wild-type enzyme failed, and a modified protocol produced two crystal forms, one obtained with polyethylene glycol (PEG), and the other with… (More)


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