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It has long been known that tellurium compounds are rather toxic to
living organisms, and tellurium hasnot been found in natural biomacromolecules to date. The principles of telluride toxicity in biologicalprocesses are still controversial partly because of the lack of information on the biochemical features oftellurium. In this contribution, we report our finding for the first time that telluroxides exhibit hydrolysiscapacity. For instance, 6,6'-telluroxy-bis(6-deoxy-
-cyclodextrin) acts as a hydrolase mimic and showsa significant rate acceleration of 106 000 for the hydrolysis of 4,4'-dinitrodiphenyl carbonate.