KIF4B (Kinesin Family Member 4B) is a Protein Coding gene. Among its related pathways are Response to elevated platelet cytosolic Ca2+ and Golgi-to-ER retrograde transport. KIF4B is an intronless retrocopy of kinesin family member 4A. The protein encoded by KIF4B is a microtubule-based motor protein that plays vital roles in anaphase spindle dynamics and cytokinesis.