FIG. 7.

Schematic representation of the web of interactions among the 10 presently studied proteins and ZipN, the cytokinetic factor we previously characterized. The spherical morphology of Synechocystis is represented by the circle. The double arrows indicate the presently reported interactions. Black and white letters stand for the proteins respectively indispensable and dispensable to Synechocystis. Black and white squares indicate that the corresponding mutants display decreased and increased cell sizes, respectively. Gray rectangles indicate that the corresponding mutants do not show any morphological defects. The hatched rectangle reminds us that the ZipN-depleted mutant has an aberrant spiral shape (26).