Protein subfamily of calcium-activated potassium channels
Calcium-activated SK potassium channel
SK Channel
Identifiers
Symbol
SK_channel
Pfam
PF03530
InterPro
IPR015449
Available protein structures:
Pfam
structures / ECOD
PDB
RCSB PDB; PDBe; PDBj
PDBsum
structure summary
SK channels (small conductance calcium-activated potassium channels) are a subfamily of calcium-activated potassium channels.[1] They are so called because of their small single channel conductance in the order of 10 pS.[2] SK channels are a type of ion channel allowing potassium cations to cross the cell membrane and are activated (opened) by an increase in the concentration of intracellular calcium through N-type calcium channels. Their activation limits the firing frequency of action potentials and is important for regulating afterhyperpolarization in the neurons of the central nervous system as well as many other types of electrically excitable cells. This is accomplished through the hyperpolarizing leak of positively charged potassium ions along their concentration gradient into the extracellular space. This hyperpolarization causes the membrane potential to become more negative.[3] SK channels are thought to be involved in synaptic plasticity and therefore play important roles in learning and memory.[4]
^Bond CT, Maylie J, Adelman JP (April 1999). "Small-conductance calcium-activated potassium channels". Annals of the New York Academy of Sciences. 868 (1): 370–8. Bibcode:1999NYASA.868..370B. doi:10.1111/j.1749-6632.1999.tb11298.x. PMID 10414306. S2CID 22930702.
^Faber ES, Sah P (October 2007). "Functions of SK channels in central neurons". Clinical and Experimental Pharmacology & Physiology. 34 (10): 1077–83. doi:10.1111/j.1440-1681.2007.04725.x. PMID 17714097. S2CID 5553791.
^Stackman RW, Hammond RS, Linardatos E, Gerlach A, Maylie J, Adelman JP, Tzounopoulos T (December 2002). "Small conductance Ca2+-activated K+ channels modulate synaptic plasticity and memory encoding". The Journal of Neuroscience. 22 (23): 10163–71. doi:10.1523/JNEUROSCI.22-23-10163.2002. PMC 6758766. PMID 12451117.
SKchannels (small conductance calcium-activated potassium channels) are a subfamily of calcium-activated potassium channels. They are so called because...
Look up SK in Wiktionary, the free dictionary. SK may refer to: SK (actor) or Sivakarthikeyan, Indian actor Salman Khan or SK, Indian actor Shahram Kashani...
the human atria is the SKchannel, which are K+ channels which are activated by increases in Ca2+ concentration. "SKchannel" stands for a small conductance...
consists of 2–3% of apamin. Apamin selectively blocks SKchannels, a type of Ca2+-activated K+ channel expressed in the central nervous system. Toxicity is...
Sodium channels are integral membrane proteins that form ion channels, conducting sodium ions (Na+) through a cell's membrane. They belong to the superfamily...
SK Telecom Co., Ltd., abbreviated as SKT (Korean: SK텔레콤 or 에스케이텔레콤) is a South Korean wireless telecommunications operator and former film distributor...
calcium channel is an ion channel which shows selective permeability to calcium ions. It is sometimes synonymous with voltage-gated calcium channel, which...
Potassium channels are the most widely distributed type of ion channel found in virtually all organisms. They form potassium-selective pores that span...
Chloride channels are a superfamily of poorly understood ion channels specific for chloride. These channels may conduct many different ions, but are named...
electric current in the heart that flows through the HCN channel or pacemaker channel. Such channels are important parts of the electrical conduction system...
cyclic nucleotide–gated (HCN) channels are integral membrane proteins that serve as nonselective voltage-gated cation channels in the plasma membranes of...
(a NMDAr negative allosteric modulator) and CAD-1883 a clinical-stage SKchannel positive allosteric modulator. In September 2021, the company announced...
priorities of the new channel is also the support of education and motivation of all ages for a healthy lifestyle. :24 (24 [sk]) is a news channel launched on 28...
Ryanodine receptors (RyR for short) form a class of intracellular calcium channels in various forms of excitable animal tissue like muscles and neurons. There...
Transient receptor potential channels (TRP channels) are a group of ion channels located mostly on the plasma membrane of numerous animal cell types....
Dubey and Sunny Hinduja. The story follows three friends, Abhilash, Guri and SK who are preparing for the UPSC exam at Rajinder Nagar, Delhi. The series began...
BK channels (big potassium), are large conductance calcium-activated potassium channels, also known as Maxi-K, slo1, or Kca1.1. BK channels are voltage-gated...
The epithelial sodium channel (ENaC), (also known as amiloride-sensitive sodium channel) is a membrane-bound ion channel that is selectively permeable...
The transient receptor potential cation channel subfamily V member 1 (TRPV1), also known as the capsaicin receptor and the vanilloid receptor 1, is a...
synchronous dynamic random-access memory (SDRAM) initially from Samsung, AMD and SK Hynix. It is used in conjunction with high-performance graphics accelerators...
Aquaporins, also called water channels, are channel proteins from a larger family of major intrinsic proteins that form pores in the membrane of biological...