CRYSTAL STRUCTURE OF A PUTATIVE THIAMINASE II (SE1693) FROM STAPHYLOCOCCUS EPIDERMIDIS ATCC 12228 AT 1.65 A RESOLUTION HYDROLASE, STRUCTURAL GENOMICS, JOINT CENTER FOR STRUCTURAL GENOMICS, JCSG, PROTEIN STRUCTURE INITIATIVE, PSI-2, PUTATIVE THIAMINASE-2 3NO6