Figure 2.

Illustration of TGN-cell plate trafficking. The TGN acts as a sorting hub for cell plate formation during cytokinesis. Representative components of the trafficking routes between the TGN and the cell plate are depicted. During early stages of cell plate formation, TGN compartments labeled by the GTPases RABA2/RABA3 and RABA1c relocate to the cell plate margins, where they are involved in vesicle targeting and the delivery of membrane to the expanding plate. The TRAPPII tethering complex is involved in cell plate biogenesis and expansion. The cytokinesis-specific SNARE protein, KNOLLE, which is found throughout the entire cell plate, mediates vesicle fusion. Cell plate maturation occurs radially from the interior directed outward toward the parental cell wall and involves the deposition of cell wall polysaccharides and the removal of excess membrane through clathrin-mediated recycling (purple hexagons). RE, Recycling endosome.