Microtubule-associated protein RP/EB family member 3 (MAPRE3)

Plus-end tracking protein (+TIP) that binds to the plus- end of microtubules and modulates the dynamics of the microtubule cytoskeleton. Promotes microtubule growth.

May be involved in spindle function by stabilizing microtubules and anchoring them at centrosomes. Also acts as a regulator of minus-end microtubule organization: interacts with the complex formed by AKAP9 and PDE4DIP, leading to recruit CAMSAP2 to the Golgi apparatus, thereby tethering non-centrosomal minus-end microtubules to the Golgi, an important step for polarized cell movement (PubMed:28814570).