Figure 8. Model for the function and localization of dyneindynactin with respect to cytoplasmic microtubules and the cell cortex.
1) Dynactin localizes to cytoplasmic microtubules through its interaction with dynein. 2) Recruitment of the dynein-dynactin complex to microtubule plus ends. 3) Retention of dynein-dynactin complex at plus ends through interactions with CLIP-170/Bik1, LIS1/Pac1 and NudEL/Ndl1. 4) Dynein and dynactin are offloaded to a cortical-binding site, and dynein is activated to power microtubule sliding.