2ELF CRYSTAL STRUCTURE OF THE SELB-LIKE ELONGATION FACTOR EF-PYL FROM METHANOSARCINA MAZEI TRANSLATION, TRNA, ELONGATION FACTOR, PYRROLYSINE, STRUCTURAL GENOMICS, NPPSFA, NATIONAL PROJECT ON PROTEIN STRUCTURAL AND FUNCTIONAL ANALYSES, RIKEN STRUCTURAL GENOMICS/PROTEOMICS INITIATIVE, RSGI