Which host protein cleaves CI and triggers up to 100% lysis after lysogenic Escherichia coli cells are exposed to ultraviolet light?

Question

Quizplus · Accepted Answer

RecA is a host protein that cleaves CI and triggers up to 100% lysis after lysogenic Escherichia coli cells are exposed to ultraviolet light. This cleavage is part of the SOS response, which is activated by DNA damage and leads to the induction of multiple genes, including those encoding RecA and proteases such as Lon protease. However, RecA is the key player in this process as it promotes the autocleavage of CI, which in turn leads to the expression of the lytic genes and consequent lysis of the cell. Primase, DNA polymerase III and terminase are all involved in DNA replication and packaging, but not in the regulation of lysogeny and lysis.

Which Host Protein Cleaves CI and Triggers Up to 100