Involved in vesicular transport between an endosomal compartment and the Golgi apparatus. Forms oligomers and is present in high-molecular-mass complexes. Interacts with ARL1. IMH1 is recruited to the Golgi apparatus by ARL1. By cold. The GRIP domain may serve as a Golgi targeting domain through its interaction with the ARL1 Golgi protein. Present with 2350 molecules/cell in log phase SD medium.