This model represents a family of small (about 50 amino acid) phage proteins, found in at least 12 different phage and prophage regions of Gram-positive bacteria. In a number of these phage, the gene for this protein is found near the holin and endolysin genes. [Mobile and extrachromosomal element functions, Prophage functions]
Jiyao W et al.(2023). "The conserved domain database in 2023.",