TRANSFERASE, ROSSMANN FOLD, STRUCTURAL GENOMICS, NPPSFA, NATIONAL PROJECT ON PROTEIN STRUCTURAL AND FUNCTIONAL ANALYSES, RIKEN STRUCTURAL GENOMICS/PROTEOMICS INITIATIVE, RSGI, GLYCOSYLTRANSFERASE CRYSTAL STRUCTURE OF HYPOXANTHINE-GUANINE PHOSPHORIBOSYLTRANSFERASE FROM THERMUS THERMOPHILUS HB8 3ACB