HYDROLASE, BETA-N-ACETYLHEXOSAMINIDASE, GLYCOSPHINGOLIPIDS, PAENIBACILLUS SP., X-RAY STRUCTURE, GH20, STRUCTURAL GENOMICS, NPPSFA, NATIONAL PROJECT ON PROTEIN STRUCTURAL AND FUNCTIONAL ANALYSES, RIKEN STRUCTURAL GENOMICS/PROTEOMICS INITIATIVE, RSGI CRYSTAL STRUCTURE OF BETA-HEXOSAMINIDASE FROM PAENIBACILLUS SP. TS12 3GH4