Phage proteins for bacterial lysis typically include a membrane-disrupting protein, or holin, and one or more cell wall degrading enzymes that reach the cell wall because of holin action. Holins are found in a large number of mutually non-homologous families. [Mobile and extrachromosomal element functions, Prophage functions]
Jiyao W et al.(2023). "The conserved domain database in 2023.",