IARS is a member of aminoacyl-tRNA synthetases which catalyze the aminoacylation of tRNA by their cognate amino acid. Because of their central role in linking amino acids with nucleotide triplets contained in tRNAS, aminoacyl-tRNA synthetases are thought to be among the first proteins that appeared in evolution. Isoleucine-tRNA synthetase belongs to the class-I aminoacyl-tRNA synthetase family and has been identified as a target of autoantibodies in the autoimmune disease polymyositis/dermatomyositis. Two alternatively spliced variants have been isolated that represent alternate 5' UTRs.
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Protein Aliases: FLJ20736; IRS; isoleucine tRNA ligase 1, cytoplasmic; Isoleucine--tRNA ligase, cytoplasmic; Isoleucyl-tRNA synthetase; isoleucyl-tRNA synthetase, cytoplasmic
Gene Aliases: IARS; IARS1; ILERS; ILRS; IRS; PRO0785
UniProt ID: (Human) P41252
Entrez Gene ID: (Human) 3376
Molecular Function: aminoacyl-tRNA synthetase