FIG 7.

Cartoon model of the Noc corralling function. Noc binds to the chromosome and membrane and corrals migration of FtsZ protofilaments during cytokinesis. In the absence of Noc, traveling protofilaments depleted for ZapA travel from a condensed FtsZ focus toward the future site of cell division. FtsZ recondenses at the same position, in the interchromosome space where the nucleoid density is reduced regardless of whether Noc is present. Red, membrane; green, FtsZ; purple, Noc; cyan, nucleoid. Arrows indicate direction of travel of the decondensed Z-ring.