HYDROLASE, GLYCOSIDE HYDROLASE, STREPTOCOCCUS PNEUMONIAE, BLOOD GROUP ANTIGEN, FUCOSE UTILIZATION 2WMH CRYSTAL STRUCTURE OF THE CATALYTIC MODULE OF A FAMILY 98 GLYCOSIDE HYDROLASE FROM STREPTOCOCCUS PNEUMONIAE TIGR4 IN COMPLEX WITH THE H-DISACCHARIDE BLOOD GROUP ANTIGEN.