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Overexpression of pbpE in the presence of the ftsH wild-type allele causes filamentous growth. (A) B. subtilis strain SZ06 (ftsH+ PxylA-pbpE) was grown either with or without addition of xylose to the medium to mid-logarithmic phase and was checked for the presence of FtsH, Pbp4*, and HtpG (internal control) by Western blotting. (B and C) Cells grown without (B) and with (C) xylose were then analyzed by phase-contrast microscopy.
