登録情報 データベース : EMDB / ID : EMD-27721 ダウンロードとリンクタイトル Global map in C1 of RyR1 particles in complex with ImperaCalcin マップデータ 詳細 試料複合体 : RyR1 in complex with ImperaCalcin in presence of Caffeine/CaM1234/Calcium/ATPタンパク質・ペプチド : Imperacalcinタンパク質・ペプチド : Ryanodine receptor 1タンパク質・ペプチド : Peptidyl-prolyl cis-trans isomerase FKBP1Bタンパク質・ペプチド : Calmodulin-1リガンド : CAFFEINEリガンド : CALCIUM IONリガンド : ADENOSINE-5'-TRIPHOSPHATEリガンド : ZINC ION 詳細 キーワード ryanodine receptor / ion channel / snake toxin / calcin / complex / membrane protein / toxin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-gated ion channel activity / positive regulation of sequestering of calcium ion / negative regulation of calcium-mediated signaling / negative regulation of insulin secretion involved in cellular response to glucose stimulus / neuronal action potential propagation / negative regulation of release of sequestered calcium ion into cytosol / insulin secretion involved in cellular response to glucose stimulus / terminal cisterna / ryanodine-sensitive calcium-release channel activity / ryanodine receptor complex ... ATP-gated ion channel activity / positive regulation of sequestering of calcium ion / negative regulation of calcium-mediated signaling / negative regulation of insulin secretion involved in cellular response to glucose stimulus / neuronal action potential propagation / negative regulation of release of sequestered calcium ion into cytosol / insulin secretion involved in cellular response to glucose stimulus / terminal cisterna / ryanodine-sensitive calcium-release channel activity / ryanodine receptor complex / CaM pathway / Cam-PDE 1 activation / release of sequestered calcium ion into cytosol by sarcoplasmic reticulum / Sodium/Calcium exchangers / response to redox state / Calmodulin induced events / ossification involved in bone maturation / Reduction of cytosolic Ca++ levels / Activation of Ca-permeable Kainate Receptor / CREB1 phosphorylation through the activation of CaMKII/CaMKK/CaMKIV cascasde / 'de novo' protein folding / Loss of phosphorylation of MECP2 at T308 / cellular response to caffeine / CREB1 phosphorylation through the activation of Adenylate Cyclase / negative regulation of heart rate / CaMK IV-mediated phosphorylation of CREB / PKA activation / negative regulation of high voltage-gated calcium channel activity / Glycogen breakdown (glycogenolysis) / CLEC7A (Dectin-1) induces NFAT activation / skin development / Activation of RAC1 downstream of NMDARs / negative regulation of ryanodine-sensitive calcium-release channel activity / organelle localization by membrane tethering / mitochondrion-endoplasmic reticulum membrane tethering / FK506 binding / autophagosome membrane docking / negative regulation of calcium ion export across plasma membrane / regulation of cardiac muscle cell action potential / presynaptic endocytosis / organelle membrane / Synthesis of IP3 and IP4 in the cytosol / regulation of cell communication by electrical coupling involved in cardiac conduction / Phase 0 - rapid depolarisation / Negative regulation of NMDA receptor-mediated neuronal transmission / calcineurin-mediated signaling / Unblocking of NMDA receptors, glutamate binding and activation / smooth endoplasmic reticulum / RHO GTPases activate PAKs / intracellularly gated calcium channel activity / outflow tract morphogenesis / Ion transport by P-type ATPases / Uptake and function of anthrax toxins / regulation of ryanodine-sensitive calcium-release channel activity / Long-term potentiation / protein phosphatase activator activity / Calcineurin activates NFAT / Regulation of MECP2 expression and activity / smooth muscle contraction / DARPP-32 events / catalytic complex / Smooth Muscle Contraction / detection of calcium ion / regulation of cardiac muscle contraction / RHO GTPases activate IQGAPs / T cell proliferation / toxic substance binding / regulation of cardiac muscle contraction by regulation of the release of sequestered calcium ion / striated muscle contraction / voltage-gated calcium channel activity / cellular response to interferon-beta / Protein methylation / calcium channel inhibitor activity / Activation of AMPK downstream of NMDARs / presynaptic cytosol / skeletal muscle fiber development / Ion homeostasis / regulation of release of sequestered calcium ion into cytosol by sarcoplasmic reticulum / eNOS activation / titin binding / Tetrahydrobiopterin (BH4) synthesis, recycling, salvage and regulation / sperm midpiece / release of sequestered calcium ion into cytosol / regulation of calcium-mediated signaling / voltage-gated potassium channel complex / calcium channel complex / substantia nigra development / FCERI mediated Ca+2 mobilization / sarcoplasmic reticulum membrane / Ras activation upon Ca2+ influx through NMDA receptor / muscle contraction / regulation of heart rate / FCGR3A-mediated IL10 synthesis / cellular response to calcium ion / calyx of Held / Antigen activates B Cell Receptor (BCR) leading to generation of second messengers / protein maturation / sarcoplasmic reticulum / adenylate cyclase activator activity / sarcomere 類似検索 - 分子機能 Scorpion calcine / Scorpion calcine family / Scorpion calcine family signature. / Ryanodine receptor, SPRY domain 2 / : / Ryanodine receptor junctional solenoid repeat / Ryanodine Receptor TM 4-6 / Ryanodine receptor / Ryanodine receptor, SPRY domain 1 / Ryanodine receptor, SPRY domain 3 ... Scorpion calcine / Scorpion calcine family / Scorpion calcine family signature. / Ryanodine receptor, SPRY domain 2 / : / Ryanodine receptor junctional solenoid repeat / Ryanodine Receptor TM 4-6 / Ryanodine receptor / Ryanodine receptor, SPRY domain 1 / Ryanodine receptor, SPRY domain 3 / Ryanodine Receptor TM 4-6 / Ryanodine receptor Ryr / RyR domain / : / RyR/IP3 receptor binding core, RIH domain superfamily / RyR/IP3R Homology associated domain / Inositol 1,4,5-trisphosphate/ryanodine receptor / RIH domain / RyR and IP3R Homology associated / Inositol 1,4,5-trisphosphate/ryanodine receptor / RIH domain / : / MIR motif / MIR domain / MIR domain profile. / Domain in ryanodine and inositol trisphosphate receptors and protein O-mannosyltransferases / Mir domain superfamily / SPRY domain / B30.2/SPRY domain / B30.2/SPRY domain profile. / B30.2/SPRY domain superfamily / Domain in SPla and the RYanodine Receptor. / SPRY domain / FKBP-type peptidyl-prolyl cis-trans isomerase / FKBP-type peptidyl-prolyl cis-trans isomerase domain / FKBP-type peptidyl-prolyl cis-trans isomerase domain profile. / Peptidyl-prolyl cis-trans isomerase domain superfamily / : / EF-hand domain pair / EF-hand, calcium binding motif / EF-Hand 1, calcium-binding site / EF-hand calcium-binding domain. / EF-hand calcium-binding domain profile. / EF-hand domain / Ion transport domain / Ion transport protein / EF-hand domain pair / Concanavalin A-like lectin/glucanase domain superfamily 類似検索 - ドメイン・相同性 Calmodulin-1 / Ryanodine receptor 1 / Imperacalcin / Peptidyl-prolyl cis-trans isomerase FKBP1B 類似検索 - 構成要素生物種 Oryctolagus cuniculus (ウサギ) / Pandinus imperator (サソリ) / Homo sapiens (ヒト)手法 単粒子再構成法 / クライオ電子顕微鏡法 / 解像度 : 3.7 Å 詳細 データ登録者Haji-Ghassemi O / Van Petegm F 資金援助 カナダ, 2件 詳細 詳細を隠すOrganization Grant number 国 Canadian Institutes of Health Research (CIHR) PJT-159601 カナダ Canadian Institutes of Health Research (CIHR) MFE-381863 カナダ
引用ジャーナル : Sci Adv / 年 : 2023タイトル : Cryo-EM analysis of scorpion toxin binding to Ryanodine Receptors reveals subconductance that is abolished by PKA phosphorylation.著者 : Omid Haji-Ghassemi / Yu Seby Chen / Kellie Woll / Georgina B Gurrola / Carmen R Valdivia / Wenxuan Cai / Songhua Li / Hector H Valdivia / Filip Van Petegem / 要旨 : Calcins are peptides from scorpion venom with the unique ability to cross cell membranes, gaining access to intracellular targets. Ryanodine Receptors (RyR) are intracellular ion channels that ... Calcins are peptides from scorpion venom with the unique ability to cross cell membranes, gaining access to intracellular targets. Ryanodine Receptors (RyR) are intracellular ion channels that control release of Ca from the endoplasmic and sarcoplasmic reticulum. Calcins target RyRs and induce long-lived subconductance states, whereby single-channel currents are decreased. We used cryo-electron microscopy to reveal the binding and structural effects of imperacalcin, showing that it opens the channel pore and causes large asymmetry throughout the cytosolic assembly of the tetrameric RyR. This also creates multiple extended ion conduction pathways beyond the transmembrane region, resulting in subconductance. Phosphorylation of imperacalcin by protein kinase A prevents its binding to RyR through direct steric hindrance, showing how posttranslational modifications made by the host organism can determine the fate of a natural toxin. The structure provides a direct template for developing calcin analogs that result in full channel block, with potential to treat RyR-related disorders. 履歴 登録 2022年7月27日 - ヘッダ(付随情報) 公開 2023年5月31日 - マップ公開 2023年5月31日 - 更新 2024年10月16日 - 現状 2024年10月16日 処理サイト : RCSB / 状態 : 公開
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