CRYSTAL STRUCTURE OF THE CATALYTIC DOMAIN OF PYRROLYSYL- TRNA SYNTHETASE IN COMPLEX WITH BOCLYS AND AN ATP ANALOGUE LIGASE, AMINOACYL-TRNA SYNTHETASE, PYRROLYSYL-TRNA SYNTHETASE, PYRROLYSINE, TRNA, ATP ANALOGUE, NON-NATURAL AMINO ACID, UNNATURAL AMINO ACID, ATP-BINDING, CYTOPLASM, NUCLEOTIDE-BINDING, PROTEIN BIOSYNTHESIS, STRUCTURAL GENOMICS, NPPSFA, NATIONAL PROJECT ON PROTEIN STRUCTURAL AND FUNCTIONAL ANALYSES, RIKEN STRUCTURAL GENOMICS/PROTEOMICS INITIATIVE, RSGI 2ZIN