regulation of action potential, cellular ion homeostasis, cell adhesion, ensheathment of neurons, axon ensheathment,cell-cell adhesion, calcium-independent cell-cell adhesion, transmission of nerve impulse, regulation of action potential in neuron, cellular homeostasis, biological adhesion, regulation of membrane potential, myelination, homeostatic process, chemical homeostasis, ion homeostasis, neurological system process, cellular chemical homeostasis,
Cell junction, tight junction . Cell membrane ; Multi-pass membrane protein . Basolateral cell membrane . Associates with CD81 and the CLDN1-CD81 complex localizes to the basolateral cell membrane. .
Strongly expressed in liver and kidney. Expressed in heart, brain, spleen, lung and testis.