Polymer-forming landmark proteins. (A) The domain structure of DivIVA is indicated with the lipid-targeting domain in gray and coiled-coil regions in red. Bottom: localization of DivIVA and associated proteins during a cell cycle. (B) The domain structure of DivIVA of S. coelicolor is indicated as in A. Bottom: left diagram illustrates the hyphal growth pattern and the right diagram illustrates the localization of DivIVA, Scy, and FilP at a hyphal tip. (C) The domain structure of BacP with the bactofilin domain in red. Bottom: localization of BacP and associated proteins. GTP hydrolysis by SofG is indicated. Note that SofG is only associated with the BacP landmark at one pole. (D) The domain structures of BacA and BacB with the bactofilin domains in red. Bottom: localization of BacA and BacB and associated protein during the cell cycle and with the old and new poles marked. Flagellum and pili are indicated at the nonstalked pole. (E) The domain structure of PopZ is indicated with α-helical regions in red and a proline-rich domain in gray. Bottom: localization of PopZ and associated proteins during the cell cycle including the ParABS-dependent chromosome segregation process and with the old and new poles marked. Flagellum and pili are indicated at the nonstalked pole. Black ovals represent the chromosome.