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In enzymology, a tryptophan-tRNA ligase () is an enzyme that catalyzes the chemical reaction :ATP + L-tryptophan + tRNATrp AMP + diphosphate + L-tryptophyl-tRNATrp The 3 substrates of this enzyme are ATP, L-tryptophan, and tRNA(Trp), whereas its 3 products are AMP, diphosphate, and L-tryptophyl-tRNATrp. This enzyme belongs to the family of ligases, to be specific those forming carbon-oxygen bonds in aminoacyl-tRNA and related compounds. The systematic name of this enzyme class is L-tryptophan:tRNATrp ligase (AMP-forming). Other names in common use include tryptophanyl-tRNA synthetase, L-tryptophan-tRNATrp ligase (AMP-forming), tryptophanyl-transfer ribonucleate synthetase, tryptophanyl-transfer ribonucleic acid synthetase, tryptophanyl-transfer RNA synthetase, tryptophanyl ribonucleic synthetase, tryptophanyl-transfer ribonucleic synthetase, tryptophanyl-tRNA synthase, tryptophan translase, and TrpRS. This enzyme participates in tryptophan metabolism and aminoacyl-trna biosynthesis. ==Structural studies== As of late 2007, 21 structures have been solved for this class of enzymes, with PDB accession codes , , , , , , , , , , , , , , , , , , , , and . 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Tryptophan—tRNA ligase」の詳細全文を読む スポンサード リンク
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