Connexin 43

**Definition:** A 43-kDa peptide which is a member of the connexin family of gap junction proteins. Connexin 43 is a product of a gene in the alpha class of connexin genes (the alpha-1 gene). It was first isolated from mammalian heart, but is widespread in the body including the brain.

**Tree numbers:** - D12.776.543.585.250.200

**Synonyms:** - Connexin43 - Cx43