Junctophilin-4 (JPH4)

Junctophilins contribute to the formation of junctional membrane complexes (JMCs) that link the plasma membrane with the endoplasmic or sarcoplasmic reticulum in excitable cells. Provides a structural foundation for functional cross-talk between the cell surface and intracellular calcium release channels.

JPH4 is brain- specific and appears to have an active part in certain neurons involved in motor coordination and memory (By similarity). .