<unk>  is a type III intermediate filament protein expressed mainly in neurons of the peripheral nervous system. It is also found in neurons of the central nervous system that have projections toward peripheral structures, such as spinal motor neurons. Its size, structure, and sequence/location of protein motifs is similar to other type III intermediate filament proteins such as desmin, vimentin and glial fibrillary acidic protein. Like these proteins,<unk>  can self-assemble to form homopolymeric filamentous networks (networks formed from<unk>  protein dimers), but it can also heteropolymerize with neurofilaments in several neuronal types. This protein in humans is encoded by the PRPH gene.<unk>  is thought to play a role in neurite elongation during development and axonal regeneration after injury, but its exact function is unknown. It is also associated with some of the major neuropathologies that characterize amyotropic lateral sclerosis (ALS), but despite extensive research into how neurofilaments and<unk>  contribute to ALS, their role in this disease is still unidentified.
Peripherin
Tetraspanin
Dystrophin
Neurofilament light polypeptide
Parkin 
Apamin
Clathrin
Internexin