ion channel
noun Date: 1985 a cell membrane channel that is selectively permeable to certain ions (as of calcium or sodium)

New Collegiate Dictionary. 2001.

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  • ion channel — n a cell membrane channel that is selectively permeable to certain ions (as of calcium or sodium) * * * a cell membrane protein with an ion specific transmembrane pore, through which ions and small molecules pass into or out of a cell by… …   Medical dictionary

  • ion channel — noun (biochemistry) A pore in a cell membrane that allows movement of ions into and out of the cell • • • Main Entry: ↑ion …   Useful english dictionary

  • Ion channel — Not to be confused with: Ion Television or Ion implantation. Schematic diagram of an ion channel. 1 channel domains (typically four per channel), 2 outer vestibule, 3 selectivity filter, 4 diameter of selectivity filter, 5 phosphorylation site, 6 …   Wikipedia

  • ion channel — A transmembrane pore that presents a hydrophilic channel for ions to cross a lipid bilayer down their electrochemical gradients. Some degree of ion specificity is usually observed, and typically a million ions per second may flow. Channels may be …   Dictionary of molecular biology

  • ion channel — noun a protein complex or single protein which penetrates a cell membrane and catalyzes the passage of specific ions through that membrane. Ion channels, which facilitate this movement, are protein assemblies that penetrate the membrane and… …   Wiktionary

  • ion channel — A protein integral to a cell membrane, through which selective ion transport occurs …   Glossary of Biotechnology

  • Ion channel linked receptors — are cell membrane bound receptors. They act through synaptic signaling on electrically excitable cells. The ion channels opening and closing is controlled by neurotransmitters.Ion channel linked receptors are also called ligand gated channels .… …   Wikipedia

  • Ion channel family — Pfam box Symbol = Ion trans Name = Ion channel (eukariotic) width =250 caption =Potassium channel KvAP, structure in a membrane like environment. Calculated hydrocarbon boundaries of the lipid bilayer are indicated by red and blue dots. Pfam=… …   Wikipedia

  • ion channel disorders — ion channelopathies …   Medical dictionary

  • Cyclic nucleotide-gated ion channel — Cyclic nucleotide gated (CNG) ion channels are ion channels that function in response to the binding of cyclic nucleotides. CNG channels are nonselective cation channels that are found in the membranes of various types of cells. Signal… …   Wikipedia

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