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Crystallization experiments with 2-enoyl-CoA hydratase, using an automated 'fast-screening' crystallization protocol.

A convenient method for screening crystallization conditions using an automated fast-screen protocol has been implemented and tested on an enoyl-CoA hydratase. The crystallization solutions for the initial screening and subsequent optimizations are prepared using a crystallization robot. Enoyl-CoA hydratase (E.C. 4.2.1.17), purified from rat-liver mitochondria, is one of the enzymes from the beta-oxidation pathway of fatty-acid metabolism; it catalyzes the reversible hydration of 2-trans-enoyl-CoA's to L-3-hydroxy-acyl-CoA's. Different crystal forms, diffracting to 3.0 A, were obtained.