Tags: Enzyme.
In enzymology a valine-tRNA ligase (EC 6.1.1.9) is an enzyme that catalyzes the chemical reactionATP + L-valine + tRNAVal AMP + diphosphate + L-valyl-tRNAValThe 3 substrates of this enzyme are ATP L-valine and tRNA(Val) whereas its 3 products are AMP diphosphate and L-valyl-tRNA(Val).This enzyme belongs to the family of ligases to be specific those forming carbon-oxygen bonds in aminoacyl-tRNA and related compounds.