CRYSTAL STRUCTURE OF NDX2 IN COMPLEX WITH MG2+ FROM THERMUS THERMOPHILUS HB8 HYDROLASE, NUDIX PROTEIN, ADP-RIBOSE, FAD, THERMUS THERMOPHILUS, STRUCTURAL GENOMICS, NPPSFA, NATIONAL PROJECT ON PROTEIN STRUCTURAL AND FUNCTIONAL ANALYSES, RIKEN STRUCTURAL GENOMICS/PROTEOMICS INITIATIVE, RSGI 2YVM