Archaeo-eukaryotic release factor domain family belonging to the VLRF1 clade, observed primarily in the actinbacteria and chloroflexi bacterial lineages. Contains a conserved glutamine residue in the release factor catalytic loop, suggesting it functions as an active peptidyl-tRNA hydrolase at the ribosome [1].

1: Vms1 and ANKZF1 peptidyl-tRNA hydrolases release nascent chains from stalled ribosomes. Verma R, Reichermeier KM, Burroughs AM, Oania RS, Reitsma JM, Aravind L, Deshaies RJ; Nature. 2018;557:446-451. PMID:29632312