FEATURES

FAMILY

DESCRIPTION

Also known as CXB4_HUMAN, GJB4. Structural component of gap junctions (By similarity). Gap junctions are dodecameric channels that connect the cytoplasm of adjoining cells. They are formed by the docking of two hexameric hemichannels, one from each cell membrane (By similarity). Small molecules and ions diffuse from one cell to a neighboring cell via the central pore (By similarity). A hemichannel or connexon is composed of a hexamer of connexins. A functional gap junction is formed by the apposition of two hemichannels (By similarity). Forms heteromeric channels with GJB2 (By similarity).

EXTERNAL LINKS

uniprot
enzyme classification
PhosphoSitePlus

GJB4

Gap junction beta-4 protein

GJB4

Molecular Synopsis