TRANSFERASE, XYLULOSE KINASE, RHODOSPIRILLUM RUBRUM, SGX, STRUCTURAL GENOMICS, 11200H, KINASE, PSI-2, PROTEIN STRUCTURE INITIATIVE, NEW YORK SGX RESEARCH CENTER FOR STRUCTURAL GENOMICS, NYSGXRC THE CRYSTAL STRUCTURE OF XYLULOSE KINASE FROM RHODOSPIRILLUM RUBRUM 3IFR