Synthesis of cysteinyl-tRNACys by a prolyl-tRNA synthetase.

Abstract excerpt

The question of how cysteinyl-tRNA(Cys) is synthesized in organisms that lack a canonical cysteinyl-tRNA synthetase (CysRS) is an important open question in understanding protein synthesis. The prolyl-tRNA synthetase (ProRS) of wide ranging organisms has the ability to mis-activate cysteine without editing. This raises the question of whether the mis-activated cysteine can be charged to tRNA(Cys) to synthesize...

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