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Two-pore-domain potassium channels: This family of 15 members form what is known as "leak channels" which possess Goldman-Hodgkin-Katz (open) rectification. These channels are regulated by several mechanisms including oxygen tension, pH, mechanical stretch, and G-proteins. Their name is derived from the fact that the α subunits consist of four transmembrane segments, each containing two pore loops. As such, they structurally correspond to two inward-rectifier α subunits and thus form dimers in the membrane.
- ↑ 1.0 1.1 Goldstein SA, Bayliss DA, Kim D, Lesage F, Plant LD, Rajan S (2005). International Union of Pharmacology. LV. Nomenclature and molecular relationships of two-P potassium channels. Pharmacol Rev 57 (4): 527-40.
Membrane transport protein: ion channels
|Ca||Voltage-dependent calcium channel (L-type/CACNA1C, N-type, P-type, Q-type, R-type, T-type) - Inositol triphosphate receptor - Ryanodine receptor - Cation channels of sperm|
|Na: Sodium channel||Nav1.4 - Nav1.5 - Nav1.7 - Epithelial sodium channel|
|K: Potassium channel||Voltage-gated (KvLQT1, KvLQT2, KvLQT3, HERG, Shaker gene, KCNE1) - Calcium-activated (BK channel, SK channel) - Inward-rectifier (ROMK, KCNJ2) - Tandem pore domain|
|Cl: Chloride channel||Cystic fibrosis transmembrane conductance regulator|
|Porin||Aquaporin (1, 2, 3, 4)|
|Transient receptor potential||TRPA - TRPC (TRPC6) - TRPM (TRPM6) - TRPML (Mucolipin-1) - TRPP - TRPV (TRPV1, TRPV6)|
|Other/general||Gap junction - Stretch-activated ion channel - Ligand-gated ion channel - Voltage-gated ion channel - Cyclic nucleotide-gated ion channel - Two-pore channel|
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