RNA recognition motif (RRM) found in Bacillus subtilis ATP-dependent RNA helicase YxiN and similar proteins
This subgroup corresponds to the C-terminal RRM homology domain of YxiN. B. subtilis YxiN is a member of the DbpA subfamily of prokaryotic DEAD-box rRNA helicases that have been implicated in ribosome biogenesis. It binds with high affinity and specificity to RNA substrates containing hairpin 92 of 23S rRNA (HP92) with either 3' or 5' extensions in an ATP-dependent manner. YxiN contains two N-terminal ATPase catalytic domains and a C-terminal RNA binding domain, an atypical RNA recognition motif (RRM), also termed RBD (RNA binding domain) or RNPs (ribonucleoprotein domain). The catalytic domains bind to nearby regions of RNA to stimulate ATP hydrolysis and disrupt RNA structures. The C-terminal domain is responsible for the high-affinity RNA binding.
Lu S et al.(2020). "CDD/SPARCLE: the conserved domain database in 2020.",