The Escherichia coli DNA damage-inducible protein P or DinP contains the protein UmuC (IPR001126). Many chemicals and UV light are thought to cause mutagenesis in E. coli by controlling DNA polymerase III and SOS through the translesion synthesis of UmuD, UmuC, and RecA proteins. This mechanism allows replication to continue through DNA lesions, thereby preventing lethal DNA replication interruptions that occur as a result of DNA damage.