This HMM (built with support from arCOG01695) describes archaeal homologs of the RqcH (Ribosome-associated Quality Control H), involved in release of defective mRNAs that lack a stop codons and so are stuck on ribosomes. Conservation of a role in ribosome rescue for this archaeal family is supported by presence in a conserved gene neighborhood with homologs of Pelota/Dom34 and ABCE1/Rli1 homologs, proteins involved in splitting the ribosome into large and small subunits.
Jiyao W et al.(2023). "The conserved domain database in 2023.",