Abstract

All cells need to modulate their rate of growth to external nutrient conditions. For bacteria to change their growth rate, they must not only modulate their rate of protein and DNA synthesis but also the rate they add new peptidoglycan into their cell wall. In many rod-shaped bacteria, the synthesis of new cell wall is mediated by filaments of MreB, an actin homolog that moves around the rod circumference with the synthetic enzymes. We used Structured Illumination Microscopy (SIM) to image the MreB filaments in different growth conditions.

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