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ileS | Isoleucyl-tRNA synthetase; Catalyzes the attachment of isoleucine to tRNA(Ile). As IleRS can inadvertently accommodate and process structurally similar amino acids such as valine, to avoid such errors it has two additional distinct tRNA(Ile)-dependent editing activities. One activity is designated as 'pretransfer' editing and involves the hydrolysis of activated Val-AMP. The other activity is designated 'posttransfer' editing and involves deacylation of mischarged Val-tRNA(Ile). Belongs to the class-I aminoacyl-tRNA synthetase family. IleS type 2 subfamily. (1138 aa) | ||||
valS | valyl-tRNA synthetase; Catalyzes the attachment of valine to tRNA(Val). As ValRS can inadvertently accommodate and process structurally similar amino acids such as threonine, to avoid such errors, it has a 'posttransfer' editing activity that hydrolyzes mischarged Thr-tRNA(Val) in a tRNA- dependent manner. (894 aa) | ||||
leuS | PFAM: tRNA synthetases class I (I, L, M and V); Anticodon-binding domain; tRNA synthetases class I (M); TIGRFAM: leucyl-tRNA synthetase, eubacterial and mitochondrial family; Belongs to the class-I aminoacyl-tRNA synthetase family. (835 aa) |