STRUCTURAL GENOMICS, UNKNOWN FUNCTION, ALL BETA-PROTEIN, PSI-2, PROTEIN STRUCTURE INITIATIVE, NORTHEAST STRUCTURAL GENOMICS CONSORTIUM, NESG CRYSTAL STRUCTURE OF THE CARDB DOMAIN OF THE PF1109 PROTEIN IN COMPLEX WITH DI-METAL IONS FROM PYROCOCCUS FURIOSUS, NORTHEAST STRUCTURAL GENOMICS CONSORTIUM TARGET PFR193A 3IDU