2DQ0 CRYSTAL STRUCTURE OF SERYL-TRNA SYNTHETASE FROM PYROCOCCUS HORIKOSHII COMPLEXED WITH A SERYL-ADENYLATE ANALOG LIGASE, COILED-COIL, HOMODIMER, STRUCTURAL GENOMICS, NPPSFA, NATIONAL PROJECT ON PROTEIN STRUCTURAL AND FUNCTIONAL ANALYSES, RIKEN STRUCTURAL GENOMICS/PROTEOMICS INITIATIVE, RSGI