Microtubule-based anterograde translocator for membranous organelles. Plus end-directed microtubule sliding activity in vitro. Plays a role in primary cilia formation. Heterodimer of KIF3A and KIF3B. Interacts with PIFO/C1orf88. Interacts with CLN3. Belongs to the kinesin-like protein family. Kinesin II subfamily. Note: This description may include information from UniProtKB.
Molecular Function: plus-end-directed microtubule motor activity; protein binding; Rab GTPase binding; spectrin binding
Biological Process: antigen processing and presentation of exogenous peptide antigen via MHC class II; centriole-centriole cohesion; microtubule-based movement; neurogenesis; organelle organization and biogenesis; retrograde vesicle-mediated transport, Golgi to ER