This domain is found at the N-terminal domain of the eukaryotic protein Asparaginal-tRNA synthetase (AsnRS, also known as NARS1). AsnRS is essential for protein translation and has been related to autoimmune and neurological diseases. Unlike its bact ...
This domain is found at the N-terminal domain of the eukaryotic protein Asparaginal-tRNA synthetase (AsnRS, also known as NARS1). AsnRS is essential for protein translation and has been related to autoimmune and neurological diseases. Unlike its bacterial homologs, this protein has a conserved N-terminal extension (this entry) connected by an unstructured tether to the part of the enzyme that has homologues within eukaryotes and prokaryotes: an anticodon-binding domain (Pfam:PF01336), a hinge region (HR), and a catalytic domain (Pfam:PF00152). This domain folds into two alpha-helices and three beta-strands form a parallel/antiparallel mixed beta-sheet and has a characteristic lysine-rich helical motif that interacts with tRNA. It also shows chemokine activity through its interaction with C-C chemokine receptor 3 (CCR3) and the promotion of NRS-CCR3-mediated proinflammatory signaling [1-3].