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| MARS1 | Methionine--tRNA ligase, cytoplasmic; Catalyzes the specific attachment of an amino acid to its cognate tRNA in a 2 step reaction: the amino acid (AA) is first activated by ATP to form AA-AMP and then transferred to the acceptor end of the tRNA. Plays a role in the synthesis of ribosomal RNA in the nucleolus. Belongs to the class-I aminoacyl-tRNA synthetase family. (900 aa) | ||||
| MARS2 | Methionine--tRNA ligase, mitochondrial; methionyl-tRNA synthetase 2, mitochondrial. (593 aa) | ||||