Abstract

Total internal reflection fluorescence (TIRF) microscopy allows the visualization of the dynamic membrane-associated actin-like MreB filaments in live bacterial cells with high temporal resolution. This chapter describes computerized analysis methods to quantitatively characterize the dynamics and morphological properties of MreB assemblies. These include how to (1) segment bacterial cells, (2) perform single-particle tracking (SPT) of MreB filamentous structures, (3) classify their dynamic modes using mean squared displacement (MSD) analysis, and (4) measure their dimensions and orientation.

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