CRYSTAL STRUCTURE OF ENDONUCLEASE IV FROM GEOBACILLUS KAUSTOPHILUS HYDROLASE, ENDOIV, DNA REPAIR, BASE EXCISION REPAIR, TIM BARREL, DNA DAMAGE, ENDONUCLEASE, METAL-BINDING, NUCLEASE, STRUCTURAL GENOMICS, NPPSFA, NATIONAL PROJECT ON PROTEIN STRUCTURAL AND FUNCTIONAL ANALYSES, RIKEN STRUCTURAL GENOMICS/PROTEOMICS INITIATIVE, RSGI 3AAL