HYDROLASE, METAL BINDING, MEROPS M20 FAMILIY, PHOSPHORYLASE/HYDROLASE-LIKE FOLD, STRUCTURAL GENOMICS, JOINT CENTER FOR STRUCTURAL GENOMICS, JCSG, PROTEIN STRUCTURE INITIATIVE, PSI CRYSTAL STRUCTURE OF A M20A METALLO PEPTIDASE (DAPE, LPG0809) FROM LEGIONELLA PNEUMOPHILA SUBSP. PNEUMOPHILA STR. PHILADELPHIA 1 AT 1.50 A RESOLUTION 3PFE