TRANSPORT PROTEIN, SUGAR BINDING/TRANSPORTER, STRUCTURAL GENOMICS, PSI, PROTEIN STRUCTURE INITIATIVE, NYSGRC, UNKNOWN LIGAND, NEW YORK STRUCTURAL GENOMIX RESEARCH CONSORTIUM, NYSGXRC, NEW YORK SGX RESEARCH CENTER FOR STRUCTURAL GENOMICS CRYSTAL STRUCTURE OF ABC SUGAR TRANSPORTER SUBUNIT FROM RHODOBACTER SPHAEROIDES 2.4.1 3L49