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cysteine-tRNA ligase activity

Known as: L-cysteine:tRNACys ligase (AMP-forming), cysteinyl-transfer ribonucleate synthetase activity, cysteinyl-tRNA synthetase activity 
Catalysis of the reaction: ATP + L-cysteine + tRNA(Cys) = AMP + diphosphate + L-cysteinyl-tRNA(Cys). [EC:6.1.1.16]
National Institutes of Health