Members of this family of small (about 100 amino acid), relatively rare proteins are found in both Gram-positive (e.g. Enterococcus faecalis) and Gram-negative (e.g. Aeromonas hydrophila) bacteria, as part of a cluster of conserved proteins. The function is unknown. [Hypothetical proteins, Conserved]
Jiyao W et al.(2023). "The conserved domain database in 2023.",