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In enzymology, a histidine-tRNA ligase () is an enzyme that catalyzes the chemical reaction :ATP + L-histidine + tRNAHis AMP + diphosphate + L-histidyl-tRNAHis The 3 substrates of this enzyme are ATP, L-histidine, and tRNA(His), whereas its 3 products are AMP, diphosphate, and L-histidyl-tRNA(His). 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-histidine:tRNAHis ligase (AMP-forming). Other names in common use include histidyl-tRNA synthetase, histidyl-transfer ribonucleate synthetase, and histidine translase. This enzyme participates in histidine metabolism and aminoacyl-trna biosynthesis. ==Structural studies== As of late 2007, 9 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「Histidine—tRNA ligase」の詳細全文を読む スポンサード リンク
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