Acts as a processive, ATP-dependent zinc metallopeptidase for both cytoplasmic and membrane proteins. Plays a role in the quality control of integral membrane proteins. Binds 1 zinc ion per subunit. Homohexamer (Potential). Part of a large complex that includes FtsH2 and PSII. Coimmunoprecipitates with YidC (PubMed:30061392). Some is found associated with photosystem II. By UV-B light and oxidative stress provided by methyl viologen. A homozygous disruption strain was not identified, suggesting this gene may be essential. In the central section; belongs to the AAA ATPase family. In the C-terminal section; belongs to the peptidase M41 family.