HIP1 protein

Patent Granted Huntingtin Interacting Protein or Hip-1 for short is a protein that interacts with the huntingtin protein. It is known to contain a domain homologous to the death effector domains (DED) found on proteins involved in apoptosis. It is believed that accumulation of high levels of the free form of this protein (free as in dissociated from the huntingtin and free to bind other key protein(s)) in the cell is one of the mechanisms by which neuron cell death is caused in Huntington's Disease (via the caspase-3 route).