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A tightly controlled turnover of membrane proteins is required for lipid bilayer stability, cell metabolism, and cell viability. Among the energy-dependent AAA+ proteases in Salmonella, FtsH is the only membrane-bound protease that contributes to the quality control of membrane proteins. FtsH preferentially degrades the C-terminus or N-terminus of misfolded, misassembled, or damaged proteins to maintain...
FtsH is a membrane-bound ATP-dependent protease in bacteria that is critical for degrading membrane proteins. The MgtC virulence protein from Salmonella enterica is located at the inner membrane and required for survival inside macrophages. Here we report that a single substitution at tryptophan 226 of the MgtC protein to alanine promotes the FtsH-mediated proteolysis. The Trp residue is located at...
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