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Comparative proteomics of the B. subtilis wild-type strain 1012 (A) and its isogenic ftsH::cat knockout (B). Intracellular proteins of B. subtilis 1012 and MP01 (ftsH::cat) exponentially grown in minimal medium at 37°C were separated in a pH gradient of 4 to 7 in the first dimension. Gels were stained with silver nitrate. Proteins present in elevated amounts in the ftsH::cat strain are boxed.
