Rab11 family-interacting protein 5 is a protein that in humans is encoded by the RAB11FIP5 gene.
RAB11FIP5 has been shown to interact with RAB11A and RAB25.
Rab11FIP5 is one of the many proteins that have been shown to interact with the Rab11 protein. Rab GTPases, such as Rab11, are enzymes that are involved in vesicular trafficking. Rab11 specifically plays a key role in endocytic trafficking and recycling through guiding early endosomes to endosome recycling complexes. Rab11FIP5, like most other Rab11FIP proteins, interacts with Rab11 by serving as an adaptor protein. This leads to downstream changes with regards to which proteins can interact. This is a result of the various Rab11FIP proteins that each have different binding partners. This process allows for the coordination and organization of endosomal transport and ultimately gives Rab11 its versatile function in the cell. It is believed that Rab11 recruits specific Rab11FIP proteins to the surface of vesicles in order to determine how the vesicle will behave.