登録情報 データベース : EMDB / ID : EMD-6689 構造の表示 ダウンロードとリンクタイトル Structure of a Pancreatic ATP-sensitive Potassium Channel マップデータB factor sharpend map 詳細 試料複合体 : ATP sensitive potassium複合体 : ATP-sensitive inward rectifier potassium channel 11タンパク質・ペプチド : ATP-sensitive inward rectifier potassium channel 11,superfolder GFP複合体 : SUR1 詳細 キーワード KATP / channel / ABC transporter / Kir / TRANSPORT PROTEIN機能・相同性 機能・相同性情報分子機能 ドメイン・相同性 構成要素
ATP sensitive Potassium channels / ATP-activated inward rectifier potassium channel activity / response to resveratrol / inward rectifying potassium channel / ventricular cardiac muscle tissue development / Regulation of insulin secretion / sulfonylurea receptor activity / cell body fiber / ABC-family proteins mediated transport / CAMKK-AMPK signaling cascade ... ATP sensitive Potassium channels / ATP-activated inward rectifier potassium channel activity / response to resveratrol / inward rectifying potassium channel / ventricular cardiac muscle tissue development / Regulation of insulin secretion / sulfonylurea receptor activity / cell body fiber / ABC-family proteins mediated transport / CAMKK-AMPK signaling cascade / voltage-gated monoatomic ion channel activity involved in regulation of presynaptic membrane potential / ATPase-coupled monoatomic cation transmembrane transporter activity / inward rectifier potassium channel activity / Ion homeostasis / nervous system process / inorganic cation transmembrane transport / ankyrin binding / response to ATP / response to stress / response to testosterone / potassium ion import across plasma membrane / potassium ion binding / action potential / intercalated disc / axolemma / ABC-type transporter activity / cellular response to nutrient levels / heat shock protein binding / T-tubule / acrosomal vesicle / response to ischemia / determination of adult lifespan / positive regulation of protein localization to plasma membrane / cellular response to glucose stimulus / negative regulation of insulin secretion / potassium ion transport / cellular response to nicotine / glucose metabolic process / cellular response to tumor necrosis factor / nuclear envelope / response to estradiol / presynaptic membrane / transmembrane transporter binding / response to hypoxia / endosome / response to xenobiotic stimulus / neuronal cell body / apoptotic process / glutamatergic synapse / protein-containing complex / ATP hydrolysis activity / ATP binding / plasma membrane / cytoplasm 類似検索 - 分子機能 Potassium channel, inwardly rectifying, Kir6.2 / ATP-binding cassette subfamily C member 8 / Sulphonylurea receptor / Potassium channel, inwardly rectifying, transmembrane domain / Inward rectifier potassium channel transmembrane domain / Potassium channel, inwardly rectifying, Kir, cytoplasmic / Potassium channel, inwardly rectifying, Kir / Inward rectifier potassium channel, C-terminal / Inward rectifier potassium channel C-terminal domain / : ... Potassium channel, inwardly rectifying, Kir6.2 / ATP-binding cassette subfamily C member 8 / Sulphonylurea receptor / Potassium channel, inwardly rectifying, transmembrane domain / Inward rectifier potassium channel transmembrane domain / Potassium channel, inwardly rectifying, Kir, cytoplasmic / Potassium channel, inwardly rectifying, Kir / Inward rectifier potassium channel, C-terminal / Inward rectifier potassium channel C-terminal domain / : / ABC transporter transmembrane region / ABC transporter type 1, transmembrane domain / ABC transporter integral membrane type-1 fused domain profile. / ABC transporter type 1, transmembrane domain superfamily / ABC transporter-like, conserved site / ABC transporters family signature. / ABC transporter / ABC transporter-like, ATP-binding domain / ATP-binding cassette, ABC transporter-type domain profile. / Immunoglobulin E-set / ATPases associated with a variety of cellular activities / AAA+ ATPase domain / P-loop containing nucleoside triphosphate hydrolase 類似検索 - ドメイン・相同性 ATP-binding cassette sub-family C member 8 / ATP-sensitive inward rectifier potassium channel 11 類似検索 - 構成要素生物種 Mus musculus (ハツカネズミ) / synthetic construct (人工物) / Mesocricetus auratus (ネズミ)手法 単粒子再構成法 / クライオ電子顕微鏡法 / 解像度 : 5.6 Å 詳細 データ登録者Li N / Wu J-X 資金援助 中国, 2件 詳細 詳細を隠すOrganization Grant number 国 Ministry of Science and Technology of China 2016YFA0502004,2016YFA0500700,2013CB910404 中国 National Natural Science Foundation of China 31622021, 31521062,31422016, 31470722, 31630087 中国
引用ジャーナル : Cell / 年 : 2017タイトル : Structure of a Pancreatic ATP-Sensitive Potassium Channel.著者 : Ningning Li / Jing-Xiang Wu / Dian Ding / Jiaxuan Cheng / Ning Gao / Lei Chen / 要旨 : ATP-sensitive potassium channels (K) couple intracellular ATP levels with membrane excitability. These channels play crucial roles in many essential physiological processes and have been implicated ... ATP-sensitive potassium channels (K) couple intracellular ATP levels with membrane excitability. These channels play crucial roles in many essential physiological processes and have been implicated extensively in a spectrum of metabolic diseases and disorders. To gain insight into the mechanism of K, we elucidated the structure of a hetero-octameric pancreatic K channel in complex with a non-competitive inhibitor glibenclamide by single-particle cryoelectron microscopy to 5.6-Å resolution. The structure shows that four SUR1 regulatory subunits locate peripherally and dock onto the central Kir6.2 channel tetramer through the SUR1 TMD0-L0 fragment. Glibenclamide-bound SUR1 uses TMD0-L0 fragment to stabilize Kir6.2 channel in a closed conformation. In another structural population, a putative co-purified phosphatidylinositol 4,5-bisphosphate (PIP) molecule uncouples Kir6.2 from glibenclamide-bound SUR1. These structural observations suggest a molecular mechanism for K regulation by anti-diabetic sulfonylurea drugs, intracellular adenosine nucleotide concentrations, and PIP lipid. 履歴 登録 2016年12月16日 - ヘッダ(付随情報) 公開 2017年1月25日 - マップ公開 2017年1月25日 - 更新 2024年11月13日 - 現状 2024年11月13日 処理サイト : PDBj / 状態 : 公開
すべて表示 表示を減らす