TIGR00020: prfB (this model, PSSM-Id:161667 is obsolete and has been replaced by 272858)
peptide chain release factor 2
In many but not all taxa, there is a conserved real translational frameshift at a TGA codon. RF-2 helps terminate translation at TGA codons and can therefore regulate its own production by readthrough when RF-2 is insufficient. There is a PFAM HMM called "RF-1" for the superfamily of RF-1, RF-2, mitochondrial, RF-H, etc.
Jiyao W et al.(2023). "The conserved domain database in 2023.",