+データを開く
-基本情報
登録情報 | データベース: PDB / ID: 7t65 | |||||||||||||||
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タイトル | Rabbit RyR1 disease mutant Y523S in complex with FKBP12.6 embedded in lipidic nanodisc in the open state | |||||||||||||||
要素 |
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キーワード | MEMBRANE PROTEIN / Ryanodine receptor / RyR / RyR1 / calcium channel / mutation / NTDC mutation / malignant hyperthermia / central core disease / excitation-contraction coupling | |||||||||||||||
機能・相同性 | 機能・相同性情報 ATP-gated ion channel activity / positive regulation of sequestering of calcium ion / cyclic nucleotide binding / negative regulation of calcium-mediated signaling / negative regulation of insulin secretion involved in cellular response to glucose stimulus / negative regulation of release of sequestered calcium ion into cytosol / terminal cisterna / neuronal action potential propagation / ryanodine receptor complex / insulin secretion involved in cellular response to glucose stimulus ...ATP-gated ion channel activity / positive regulation of sequestering of calcium ion / cyclic nucleotide binding / negative regulation of calcium-mediated signaling / negative regulation of insulin secretion involved in cellular response to glucose stimulus / negative regulation of release of sequestered calcium ion into cytosol / terminal cisterna / neuronal action potential propagation / ryanodine receptor complex / insulin secretion involved in cellular response to glucose stimulus / ryanodine-sensitive calcium-release channel activity / release of sequestered calcium ion into cytosol by sarcoplasmic reticulum / response to redox state / protein maturation by protein folding / ossification involved in bone maturation / 'de novo' protein folding / negative regulation of heart rate / skin development / FK506 binding / organelle membrane / positive regulation of axon regeneration / cellular response to caffeine / channel regulator activity / outflow tract morphogenesis / intracellularly gated calcium channel activity / smooth muscle contraction / response to vitamin E / toxic substance binding / voltage-gated calcium channel activity / smooth endoplasmic reticulum / regulation of cardiac muscle contraction by regulation of the release of sequestered calcium ion / calcium channel inhibitor activity / skeletal muscle fiber development / striated muscle contraction / regulation of release of sequestered calcium ion into cytosol by sarcoplasmic reticulum / T cell proliferation / Ion homeostasis / release of sequestered calcium ion into cytosol / muscle contraction / regulation of cytosolic calcium ion concentration / calcium channel complex / sarcoplasmic reticulum membrane / cellular response to calcium ion / sarcoplasmic reticulum / peptidylprolyl isomerase / peptidyl-prolyl cis-trans isomerase activity / calcium-mediated signaling / calcium ion transmembrane transport / response to hydrogen peroxide / calcium channel activity / Stimuli-sensing channels / sarcolemma / Z disc / intracellular calcium ion homeostasis / disordered domain specific binding / positive regulation of cytosolic calcium ion concentration / protein refolding / protein homotetramerization / transmembrane transporter binding / calmodulin binding / signaling receptor binding / calcium ion binding / ATP binding / identical protein binding / membrane / cytosol / cytoplasm 類似検索 - 分子機能 | |||||||||||||||
生物種 | Oryctolagus cuniculus (ウサギ) Homo sapiens (ヒト) | |||||||||||||||
手法 | 電子顕微鏡法 / 単粒子再構成法 / クライオ電子顕微鏡法 / 解像度: 4.05 Å | |||||||||||||||
データ登録者 | Iyer, K.A. / Hu, Y. / Murayama, T. / Samso, M. | |||||||||||||||
資金援助 | 米国, 4件
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引用 | ジャーナル: Proc Natl Acad Sci U S A / 年: 2022 タイトル: Molecular mechanism of the severe MH/CCD mutation Y522S in skeletal ryanodine receptor (RyR1) by cryo-EM. 著者: Kavita A Iyer / Yifan Hu / Thomas Klose / Takashi Murayama / Montserrat Samsó / 要旨: Ryanodine receptors (RyRs) are main regulators of intracellular Ca release and muscle contraction. The Y522S mutation of RyR1 causes central core disease, a weakening myopathy, and malignant ...Ryanodine receptors (RyRs) are main regulators of intracellular Ca release and muscle contraction. The Y522S mutation of RyR1 causes central core disease, a weakening myopathy, and malignant hyperthermia, a sudden and potentially fatal response to anesthetics or heat. Y522 is in the core of the N-terminal subdomain C of RyR1 and the mechanism of how this mutation orchestrates malfunction is unpredictable for this 2-MDa ion channel, which has four identical subunits composed of 15 distinct cytoplasmic domains each. We expressed and purified the RyR1 rabbit homolog, Y523S, from HEK293 cells and reconstituted it in nanodiscs under closed and open states. The high-resolution cryogenic electron microscopic (cryo-EM) three-dimensional (3D) structures show that the phenyl ring of Tyr functions in a manner analogous to a "spacer" within an α-helical bundle. Mutation to the much smaller Ser alters the hydrophobic network within the bundle, triggering rearrangement of its α-helices with repercussions in the orientation of most cytoplasmic domains. Examining the mutation-induced readjustments exposed a series of connected α-helices acting as an ∼100 Å-long lever: One end protrudes toward the dihydropyridine receptor, its molecular activator (akin to an antenna), while the other end reaches the Ca activation site. The Y523S mutation elicits channel preactivation in the absence of any activator and full opening at 1.5 µM free Ca, increasing by ∼20-fold the potency of Ca to activate the channel compared with RyR1 wild type (WT). This study identified a preactivated pathological state of RyR1 and a long-range lever that may work as a molecular switch to open the channel. | |||||||||||||||
履歴 |
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-構造の表示
構造ビューア | 分子: MolmilJmol/JSmol |
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-ダウンロードとリンク
-ダウンロード
PDBx/mmCIF形式 | 7t65.cif.gz | 2.9 MB | 表示 | PDBx/mmCIF形式 |
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PDB形式 | pdb7t65.ent.gz | 表示 | PDB形式 | |
PDBx/mmJSON形式 | 7t65.json.gz | ツリー表示 | PDBx/mmJSON形式 | |
その他 | その他のダウンロード |
-検証レポート
文書・要旨 | 7t65_validation.pdf.gz | 2 MB | 表示 | wwPDB検証レポート |
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文書・詳細版 | 7t65_full_validation.pdf.gz | 2 MB | 表示 | |
XML形式データ | 7t65_validation.xml.gz | 396.4 KB | 表示 | |
CIF形式データ | 7t65_validation.cif.gz | 624.3 KB | 表示 | |
アーカイブディレクトリ | https://data.pdbj.org/pub/pdb/validation_reports/t6/7t65 ftp://data.pdbj.org/pub/pdb/validation_reports/t6/7t65 | HTTPS FTP |
-関連構造データ
関連構造データ | 25710MC 7t64C M: このデータのモデリングに利用したマップデータ C: 同じ文献を引用 (文献) |
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類似構造データ | 類似検索 - 機能・相同性F&H 検索 |
-リンク
-集合体
登録構造単位 |
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1 |
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-要素
#1: タンパク質 | 分子量: 565832.562 Da / 分子数: 4 / 変異: Y523S / 由来タイプ: 組換発現 / 由来: (組換発現) Oryctolagus cuniculus (ウサギ) / 遺伝子: RYR1 / 細胞株 (発現宿主): HEK293 / 発現宿主: Homo sapiens (ヒト) / 参照: UniProt: P11716 #2: タンパク質 | 分子量: 11667.305 Da / 分子数: 4 / 由来タイプ: 組換発現 / 由来: (組換発現) Homo sapiens (ヒト) / 遺伝子: FKBP1B, FKBP12.6, FKBP1L, FKBP9, OTK4 発現宿主: Escherichia coli 'BL21-Gold(DE3)pLysS AG' (大腸菌) 参照: UniProt: P68106, peptidylprolyl isomerase #3: 化合物 | ChemComp-ATP / #4: 化合物 | ChemComp-CA / #5: 化合物 | ChemComp-ZN / 研究の焦点であるリガンドがあるか | Y | Has protein modification | Y | |
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-実験情報
-実験
実験 | 手法: 電子顕微鏡法 |
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EM実験 | 試料の集合状態: PARTICLE / 3次元再構成法: 単粒子再構成法 |
-試料調製
構成要素 | 名称: Rabbit RyR1 disease mutant Y523S in complex with FKBP12.6 embedded in lipidic nanodisc in the open state タイプ: COMPLEX / Entity ID: #1-#2 / 由来: MULTIPLE SOURCES | ||||||||||||||||||||||||||||||
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分子量 | 値: 2.26 MDa / 実験値: NO | ||||||||||||||||||||||||||||||
緩衝液 | pH: 7.4 | ||||||||||||||||||||||||||||||
緩衝液成分 |
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試料 | 濃度: 4.5 mg/ml / 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES | ||||||||||||||||||||||||||||||
試料支持 | グリッドの材料: GOLD / グリッドのサイズ: 300 divisions/in. / グリッドのタイプ: Quantifoil R1.2/1.3 | ||||||||||||||||||||||||||||||
急速凍結 | 装置: FEI VITROBOT MARK IV / 凍結剤: ETHANE / 湿度: 95 % / 凍結前の試料温度: 277.15 K / 詳細: Blot force 2; blot for 1.0s before plunging |
-電子顕微鏡撮影
実験機器 | モデル: Titan Krios / 画像提供: FEI Company |
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顕微鏡 | モデル: FEI TITAN KRIOS |
電子銃 | 電子線源: FIELD EMISSION GUN / 加速電圧: 300 kV / 照射モード: FLOOD BEAM |
電子レンズ | モード: BRIGHT FIELD / 倍率(公称値): 81000 X / 最大 デフォーカス(公称値): 2500 nm / 最小 デフォーカス(公称値): 700 nm / Cs: 2.7 mm |
試料ホルダ | 凍結剤: NITROGEN 試料ホルダーモデル: FEI TITAN KRIOS AUTOGRID HOLDER |
撮影 | 平均露光時間: 3.12 sec. / 電子線照射量: 53.19 e/Å2 / フィルム・検出器のモデル: GATAN K3 (6k x 4k) / 撮影したグリッド数: 1 / 実像数: 11018 |
電子光学装置 | エネルギーフィルタースリット幅: 20 eV |
-解析
EMソフトウェア |
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CTF補正 | タイプ: NONE | ||||||||||||||||||||||||||||||||||||||||||||
粒子像の選択 | 選択した粒子像数: 197530 | ||||||||||||||||||||||||||||||||||||||||||||
対称性 | 点対称性: C4 (4回回転対称) | ||||||||||||||||||||||||||||||||||||||||||||
3次元再構成 | 解像度: 4.05 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 84954 / クラス平均像の数: 1 / 対称性のタイプ: POINT | ||||||||||||||||||||||||||||||||||||||||||||
原子モデル構築 | プロトコル: RIGID BODY FIT / 空間: REAL | ||||||||||||||||||||||||||||||||||||||||||||
原子モデル構築 | PDB-ID: 6WOT Accession code: 6WOT / Source name: PDB / タイプ: experimental model |