connexins, connexons

connexins, connexons
Complex protein assemblies that traverse the lipid bilayer of the plasma membrane and forms a continuous channel with a pore diameter of approximately 1.5 nm; a pair of connexons from two adjacent cells join to form a gap junction that bridges the 2–4-nm gap between the cells, resulting in both electrical and metabolic couplings; one type of c. makes up the gap junction in heart and may coordinate the beating of all muscle cells in one section of the heart.

Medical dictionary. 2011.

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  • Connexin — An open gap junction, composed of six identical connexin proteins. Each of these six units is a single polypeptide which passes the membrane four times (referred to as four pass transmembrane proteins). Identifiers Symbol …   Wikipedia

  • Gap junction — A gap junction or nexus is a specialized intercellular connection between certain animal cell types. It directly connects the cytoplasm of two cells, which allows various molecules and ions to pass freely between cells.One gap junction is… …   Wikipedia

  • GJA9 — Gap junction protein, alpha 9, 36kDa, also known as GJA9, is a human gene.cite web | title = Entrez Gene: GJA9 gap junction protein, alpha 9, 36kDa| url = http://www.ncbi.nlm.nih.gov/sites/entrez?Db=gene Cmd=ShowDetailView TermToSearch=57369|… …   Wikipedia

  • Multiprotein complex — Bacillus amyloliquefaciens proteins in a complex A multiprotein complex (or protein complex) is a group of two or more associated polypeptide chains. If the different polypeptide chains contain different protein domain, the resulting multiprotein …   Wikipedia

  • Connexon — and connexin structure Latin connexona Code TH …   Wikipedia

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