3JXE CRYSTAL STRUCTURE OF PYROCOCCUS HORIKOSHII TRYPTOPHANYL-TRNA SYNTHETASE IN COMPLEX WITH TRPAMP LIGASE, TRYPTOPHANYL-TRNA SYNTHETASE, ADENOSINE TRIPHOSPHATE, ROSSMANN FOLD, CRYSTALLOGRAPHY, X-RAY, P. HORIKOSHII, AMINOACYL-TRNA SYNTHETASE, ATP-BINDING, CYTOPLASM, NUCLEOTIDE-BINDING, PROTEIN BIOSYNTHESIS