Members of this protein family are restricted to the Pyrococcus and Thermococcus genera of the archaea. Member proteins have a C-terminal, Cys-containing predicted surface anchor domain, where the Cys may be the site of cleavage and lipid attachment (see domain TIGR04288). Members also contain a region crowded with 10 invariant Cys in 60 residues (see domain TIGR04289), possible ligands to some redox cofactor. Note that a sorting motif is CGP. Previously, the motif was named incorrectly as GCP-CTERM in this model due to a typographical error.
Jiyao W et al.(2023). "The conserved domain database in 2023.",