2DJ6 LYASE, 6-PYRUVOYL TETRAHYDROBIOPTERIN SYNTHASE (PTPS), X-RAY DIFFRACTION, STRUCTURAL GENOMICS, NPPSFA, NATIONAL PROJECT ON PROTEIN STRUCTURAL AND FUNCTIONAL ANALYSES, RIKEN STRUCTURAL GENOMICS/PROTEOMICS INITIATIVE, RSGI CRYSTAL STRUCTURE OF 6-PYRUVOYL TETRAHYDROBIOPTERIN SYNTHASE FROM PYROCOCCUS HORIKOSHII OT3