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. 2019 Feb 15;7(1):10.1128/microbiolspec.psib-0002-2018. doi: 10.1128/microbiolspec.psib-0002-2018

FIGURE 1.

FIGURE 1

Gliding of F. johnsoniae cells. (A) Characteristic movements of cells. (B) Spreading colonies formed by wild-type cells and nonspreading colonies formed by cells of a nonmotile gldA mutant. Bar corresponds to 1 mm. (C) Model of F. johnsoniae gliding. Gld proteins in the cell envelope form the PMF-powered rotary motors that are attached to the cell wall and propel adhesins, such as SprB and RemA, along looped helical tracks on the cell surface. The action of the motors on adhesins that are attached to the substratum results in forward movement and rotation of the cell. Two rotary motors are shown. Rotation of one motor propels a baseplate carrying SprB and RemA adhesins and delivers it to the next motor. Modified from reference 13.