3I47 LYASE, STRUCTURAL GENOMICS, CRYSTAL STRUCTURE,PROTEIN STRUCTURE INITIATIVE, NEW YORK STRUCTURAL GENOMIX RESEARCH CONSORTIUM, NYSGXRC, CROTONASE, ISOMERASE, PSI-2, NEW YORK SGX RESEARCH CENTER FOR STRUCTURAL GENOMICS CRYSTAL STRUCTURE OF PUTATIVE ENOYL COA HYDRATASE/ISOMERASE (CROTONASE) FROM LEGIONELLA PNEUMOPHILA SUBSP. PNEUMOPHILA STR. PHILADELPHIA 1