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class I tRNA ligase family protein
This family includes methionyl tRNA synthetases. (from Pfam)
DALR domain-containing protein
This DALR domain is found in cysteinyl-tRNA-synthetases [1]. [1]. 10447505. Evolution of aminoacyl-tRNA synthetases--analysis of unique. domain architectures and phylogenetic trees reveals a complex. history of horizontal gene transfer events.. Wolf YI, Aravind L, Grishin NV, Koonin EV;. Genome Res 1999;9:689-710. (from Pfam)
tRNA synthetases class I (C) catalytic domain
This family includes only cysteinyl tRNA synthetases. (from Pfam)
cysteine--tRNA ligase
cysteine--tRNA ligase catalyzes the attachment of cysteine to tRNA(Cys)
Cysteine--tRNA ligase charges a cysteine by linking its carboxyl group to the alpha-phosphate of ATP and then transfers the aminoacyl-adenylate to its tRNA. This HMM finds the cysteinyl-tRNA synthetase from most but not from all species. Many archaea instead and a few bacteria rely on the SepRS/SepCysS pathway, first ligating phosphoserine to tRNA(Cys), then replacing the phosphate with sulfide.
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