WEPRS_RNA binding domain. This short RNA-binding domain is found in several higher eukaryote aminoacyl-tRNA synthetases (aaRSs). It is found in multiple copies in eukaryotic bifunctional glutamyl-prolyl-tRNA synthetases (EPRS) in a region that separates the N-terminal glutamyl-tRNA synthetase (GluRS) from the C-terminal prolyl-tRNA synthetase (ProRS). It is also found at the N-terminus of vertebrate tryptophanyl-tRNA synthetases (TrpRS). This domain consists of a helix-turn-helix structure, which is similar to other RNA-binding proteins. It is involved in both protein-RNA interactions by binding tRNA and protein-protein interactions, which are important for the formation of aaRSs into multienzyme complexes.
Jiyao W et al.(2023). "The conserved domain database in 2023.",