Definitions

A cytokinetic array of antiparallel microtubules (MT) organized perpendicularly to the division plane, coexisting with an array of actin filaments

Formed after the PPB —> during the anaphase-to-telophase transition of cell division

During cytokinesis, the cytoskeletal PP controls the cell plate assembly.

The plasma membrane region occupied by the preprophase band (PPB) and division site resident proteins, which delineates the division plane.

The plane where the cell plate is assembled.

Formed after prometaphase (after PPB formation)

—> Chromosome segregation

Highly organized cytoskeletal array, foreshadowing the circumference of the division plane

• PPB disappears at about the time of the nuclear envelope breakdown at prometaphase

Outlines the position of the

• Formed during the G2 phase

• Found from preprophase to late prophase/prometaphase

Despite its disintegration at late prophase/prometaphase, a set of proteins initially tethered to the PPB remains at the adjacent plasma membrane region and designates the division site —> CDZ

Collectively refers to the cortical division zone in mitosis and the cell plate fusion site in cytokinesis

Microtubules (MT)

Actin filaments (AF)

Organelles

Proteins

The site at the plasma membrane where the developing cell plate fuses.

1. Determination of the cell division plate

2. Assembly of the cell division plate

A region at the cortical cytoplasm of the parental plasma membrane with fewer actin filaments, potentially coinciding with the cortical division zone

temporarily.

Among the residents of the division site, some proteins contribute to the maintenance and guidance of the phragmoplast and cell plate, whereas other proteins mediate the anchoring of the cell plate to the parental plasma membrane at the division site.

Animal cells select their division plane in metaphase and anaphase.

Most plant cells earmark their division plane by the preprophase band (PPB) at the G2/M transition - much earlier when compared to the animal cells

1. Accumulation and fusion of vesicles

2. Tubulovesicular network

3. Tubular network

4. Fenestrated sheet