Alanine--tRNA ligase
UniProtKB accession: O58035
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Go to UniProtKB: O58035
UniProtKB description: Catalyzes the attachment of alanine to tRNA(Ala) in a two-step reaction: alanine is first activated by ATP to form Ala-AMP and then transferred to the acceptor end of tRNA(Ala). Edits incorrectly charged Ser-tRNA(Ala). Incorrectly charged amino acids occur because the of inherent physicochemical limitations on discrimination between closely related amino acids (Gly and Ser) in the charging step.
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