20 aminoacyl-tRNA synthetase enzymes must be present in cells to properly synthesize proteins.
Aminoacyl-tRNA, commonly known as aa-tRNA or charged tRNA, is a kind of tRNA that has a chemical connection with its corresponding amino acid. The amino acid is delivered to the ribosome via the aa-tRNA and certain elongation factors are incorporated into the polypeptide chain that is being created during translation. An enzyme known as a tRNA-ligase, also known as an aminoacyl-tRNA synthetase (aaRS or ARS), connects the proper amino acid to its associated tRNA. It is also commonly known as aa-tRNA or charged tRNA, which is a kind of tRNA that has a chemical connection with its corresponding amino acid (charged).
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