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Reference.org
ATP-sensitive potassium channel
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<p>An ATP-sensitive potassium channel (or KATP channel) is a type of <a href="/facts/Potassium_channel/0QHmrHPn">potassium channel</a> that is gated by intracellular <a href="/facts/Nucleotide/pQKEwlJI">nucleotides</a>, <a href="/facts/Adenosine_triphosphate/nB9bwgcU">ATP</a> and <a href="/facts/Adenosine_diphosphate/JEDnsCjn">ADP</a>. ATP-sensitive potassium channels are composed of Kir6.x-type subunits and <a href="/facts/Sulfonylurea_receptor/Kj9hnIzc">sulfonylurea receptor</a> (SUR) subunits, along with additional components. KATP channels are widely distributed in <a href="/facts/Cell_membrane/vAXSD0DT">plasma membranes</a>; however some may also be found on subcellular membranes. These latter classes of KATP channels can be classified as being either <a href="/facts/Sarcolemma/s62stjxE">sarcolemmal</a> ("sarcKATP"), <a href="/facts/Mitochondrion/ErHqrdJ1">mitochondrial</a> ("mitoKATP"), or <a href="/facts/Cell_nucleus/D7sFRa3c">nuclear</a> ("nucKATP"). </p>