LIGASE, TM0492, TRYPTOPHANYL-TRNA SYNTHETASE (EC 6.1.1.2) (TRYPTOPHAN-TRNA LIGASE)(TRPRS), STRUCTURAL GENOMICS, JOINT CENTER FOR STRUCTURAL GENOMICS, JCSG, PROTEIN STRUCTURE INITIATIVE, PSI CRYSTAL STRUCTURE OF TRYPTOPHANYL-TRNA SYNTHETASE (EC 6.1.1.2) (TRYPTOPHAN-TRNA LIGASE)(TRPRS) (TM0492) FROM THERMOTOGA MARITIMA AT 2.50 A RESOLUTION 2G36