SK channel
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Small conductance (SK) calcium-activated potassium channel is a type of Ca2+-activated K+ channels. SK channels are gated by submicromolar-levels of intracellular Ca2+ ions and are important for regulating resting membrane potential, even though SK channels themselves are apparently insensitive to membrane voltage.
SK channels are thought to be involved in synaptic plasticity and can be pharmacologically blocked by a plant-derived neurotoxin Bicuculline
Several SK channel family subunits were cloned (See for example Dr. John Adelman http://www.ohsu.edu/vollum/faculty/adelman/
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Stretch-activated ion channel - Ligand-gated ion channel - Voltage-gated ion channel
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: SCN4A - SCN5A - SCN9A - Epithelial sodium channel
K: Potassium channel: Voltage-gated (KvLQT1, HERG, Shaker gene, KCNE1) - Calcium-activated (BK channel, SK channel) - Inward-rectifier (ROMK, KCNJ2) - Tandem pore domain/Resting ion channel
Cl: Chloride channel: Cystic fibrosis transmembrane conductance regulator
Transient receptor potential (TRPV6) - Cyclic nucleotide-gated ion channel - Two-pore channel
