+データを開く
-基本情報
登録情報 | データベース: EMDB / ID: EMD-7330 | |||||||||
---|---|---|---|---|---|---|---|---|---|---|
タイトル | High-Resolution Cryo-EM Structures of Actin-bound Myosin States Reveal the Mechanism of Myosin Force Sensing | |||||||||
マップデータ | Actin-bound Myosin | |||||||||
試料 |
| |||||||||
キーワード | Mechanochemistry / Mechanobiology / Structural Biology / Cytoskeleton / Molecular Motor / Myosin-I / STRUCTURAL PROTEIN | |||||||||
機能・相同性 | 機能・相同性情報 post-Golgi vesicle-mediated transport / transferrin transport / actin filament-based movement / myosin complex / CaM pathway / Cam-PDE 1 activation / Sodium/Calcium exchangers / Calmodulin induced events / Reduction of cytosolic Ca++ levels / CREB1 phosphorylation through the activation of CaMKII/CaMKK/CaMKIV cascasde ...post-Golgi vesicle-mediated transport / transferrin transport / actin filament-based movement / myosin complex / CaM pathway / Cam-PDE 1 activation / Sodium/Calcium exchangers / Calmodulin induced events / Reduction of cytosolic Ca++ levels / CREB1 phosphorylation through the activation of CaMKII/CaMKK/CaMKIV cascasde / Activation of Ca-permeable Kainate Receptor / Loss of phosphorylation of MECP2 at T308 / CREB1 phosphorylation through the activation of Adenylate Cyclase / PKA activation / negative regulation of high voltage-gated calcium channel activity / cytoskeletal motor activator activity / CaMK IV-mediated phosphorylation of CREB / Glycogen breakdown (glycogenolysis) / positive regulation of cyclic-nucleotide phosphodiesterase activity / organelle localization by membrane tethering / negative regulation of calcium ion export across plasma membrane / CLEC7A (Dectin-1) induces NFAT activation / microfilament motor activity / autophagosome membrane docking / mitochondrion-endoplasmic reticulum membrane tethering / Activation of RAC1 downstream of NMDARs / regulation of cardiac muscle cell action potential / tropomyosin binding / myosin heavy chain binding / positive regulation of ryanodine-sensitive calcium-release channel activity / mesenchyme migration / regulation of cell communication by electrical coupling involved in cardiac conduction / troponin I binding / Synthesis of IP3 and IP4 in the cytosol / negative regulation of peptidyl-threonine phosphorylation / Negative regulation of NMDA receptor-mediated neuronal transmission / Phase 0 - rapid depolarisation / Unblocking of NMDA receptors, glutamate binding and activation / negative regulation of ryanodine-sensitive calcium-release channel activity / filamentous actin / protein phosphatase activator activity / actin filament bundle / RHO GTPases activate PAKs / brush border / phosphatidylinositol-3,4,5-trisphosphate binding / cytoskeletal motor activity / Ion transport by P-type ATPases / : / microvillus / skeletal muscle thin filament assembly / actin filament bundle assembly / striated muscle thin filament / Uptake and function of anthrax toxins / Long-term potentiation / Regulation of MECP2 expression and activity / Calcineurin activates NFAT / skeletal muscle myofibril / catalytic complex / DARPP-32 events / actin monomer binding / detection of calcium ion / regulation of cardiac muscle contraction / Smooth Muscle Contraction / regulation of ryanodine-sensitive calcium-release channel activity / RHO GTPases activate IQGAPs / regulation of cardiac muscle contraction by regulation of the release of sequestered calcium ion / calcium channel inhibitor activity / cellular response to interferon-beta / eNOS activation / Protein methylation / voltage-gated potassium channel complex / Activation of AMPK downstream of NMDARs / skeletal muscle fiber development / stress fiber / regulation of release of sequestered calcium ion into cytosol by sarcoplasmic reticulum / Tetrahydrobiopterin (BH4) synthesis, recycling, salvage and regulation / phosphatidylinositol-4,5-bisphosphate binding / Ion homeostasis / : / titin binding / positive regulation of protein autophosphorylation / regulation of calcium-mediated signaling / sperm midpiece / calcium channel complex / substantia nigra development / adenylate cyclase activator activity / actin filament polymerization / Ras activation upon Ca2+ influx through NMDA receptor / regulation of heart rate / sarcomere / FCERI mediated Ca+2 mobilization / FCGR3A-mediated IL10 synthesis / protein serine/threonine kinase activator activity / VEGFR2 mediated vascular permeability / trans-Golgi network membrane / VEGFR2 mediated cell proliferation / regulation of cytokinesis / Antigen activates B Cell Receptor (BCR) leading to generation of second messengers / filopodium / positive regulation of peptidyl-threonine phosphorylation 類似検索 - 分子機能 | |||||||||
生物種 | unidentified (未定義) / Rattus norvegicus (ドブネズミ) / Oryctolagus cuniculus (ウサギ) | |||||||||
手法 | らせん対称体再構成法 / クライオ電子顕微鏡法 / 解像度: 3.8 Å | |||||||||
データ登録者 | Mentes A / Huehn A | |||||||||
資金援助 | 米国, 1件
| |||||||||
引用 | ジャーナル: Proc Natl Acad Sci U S A / 年: 2018 タイトル: High-resolution cryo-EM structures of actin-bound myosin states reveal the mechanism of myosin force sensing. 著者: Ahmet Mentes / Andrew Huehn / Xueqi Liu / Adam Zwolak / Roberto Dominguez / Henry Shuman / E Michael Ostap / Charles V Sindelar / 要旨: Myosins adjust their power outputs in response to mechanical loads in an isoform-dependent manner, resulting in their ability to dynamically adapt to a range of motile challenges. Here, we reveal the ...Myosins adjust their power outputs in response to mechanical loads in an isoform-dependent manner, resulting in their ability to dynamically adapt to a range of motile challenges. Here, we reveal the structural basis for force-sensing based on near-atomic resolution structures of one rigor and two ADP-bound states of myosin-IB (myo1b) bound to actin, determined by cryo-electron microscopy. The two ADP-bound states are separated by a 25° rotation of the lever. The lever of the first ADP state is rotated toward the pointed end of the actin filament and forms a previously unidentified interface with the N-terminal subdomain, which constitutes the upper half of the nucleotide-binding cleft. This pointed-end orientation of the lever blocks ADP release by preventing the N-terminal subdomain from the pivoting required to open the nucleotide binding site, thus revealing how myo1b is inhibited by mechanical loads that restrain lever rotation. The lever of the second ADP state adopts a rigor-like orientation, stabilized by class-specific elements of myo1b. We identify a role for this conformation as an intermediate in the ADP release pathway. Moreover, comparison of our structures with other myosins reveals structural diversity in the actomyosin binding site, and we reveal the high-resolution structure of actin-bound phalloidin, a potent stabilizer of filamentous actin. These results provide a framework to understand the spectrum of force-sensing capacities among the myosin superfamily. | |||||||||
履歴 |
|
-構造の表示
ムービー |
ムービービューア |
---|---|
構造ビューア | EMマップ: SurfViewMolmilJmol/JSmol |
添付画像 |
-ダウンロードとリンク
-EMDBアーカイブ
マップデータ | emd_7330.map.gz | 194.4 MB | EMDBマップデータ形式 | |
---|---|---|---|---|
ヘッダ (付随情報) | emd-7330-v30.xml emd-7330.xml | 17.7 KB 17.7 KB | 表示 表示 | EMDBヘッダ |
画像 | emd_7330.png | 163.8 KB | ||
マスクデータ | emd_7330_msk_1.map | 244.1 MB | マスクマップ | |
Filedesc metadata | emd-7330.cif.gz | 6.2 KB | ||
その他 | emd_7330_half_map_1.map.gz emd_7330_half_map_2.map.gz | 194.2 MB 194.1 MB | ||
アーカイブディレクトリ | http://ftp.pdbj.org/pub/emdb/structures/EMD-7330 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-7330 | HTTPS FTP |
-検証レポート
文書・要旨 | emd_7330_validation.pdf.gz | 1.1 MB | 表示 | EMDB検証レポート |
---|---|---|---|---|
文書・詳細版 | emd_7330_full_validation.pdf.gz | 1.1 MB | 表示 | |
XML形式データ | emd_7330_validation.xml.gz | 15.4 KB | 表示 | |
CIF形式データ | emd_7330_validation.cif.gz | 18.2 KB | 表示 | |
アーカイブディレクトリ | https://ftp.pdbj.org/pub/emdb/validation_reports/EMD-7330 ftp://ftp.pdbj.org/pub/emdb/validation_reports/EMD-7330 | HTTPS FTP |
-関連構造データ
-リンク
EMDBのページ | EMDB (EBI/PDBe) / EMDataResource |
---|---|
「今月の分子」の関連する項目 |
-マップ
ファイル | ダウンロード / ファイル: emd_7330.map.gz / 形式: CCP4 / 大きさ: 244.1 MB / タイプ: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
注釈 | Actin-bound Myosin | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
投影像・断面図 | 画像のコントロール
画像は Spider により作成 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
ボクセルのサイズ | X=Y=Z: 1.3 Å | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
密度 |
| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
対称性 | 空間群: 1 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
詳細 | EMDB XML:
CCP4マップ ヘッダ情報:
|
-添付データ
-マスク #1
ファイル | emd_7330_msk_1.map | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
投影像・断面図 |
| ||||||||||||
密度ヒストグラム |
-ハーフマップ: Actin-bound Myosin, half mask 1
ファイル | emd_7330_half_map_1.map | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
注釈 | Actin-bound Myosin, half mask 1 | ||||||||||||
投影像・断面図 |
| ||||||||||||
密度ヒストグラム |
-ハーフマップ: Actin-bound Myosin, half mask 2
ファイル | emd_7330_half_map_2.map | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
注釈 | Actin-bound Myosin, half mask 2 | ||||||||||||
投影像・断面図 |
| ||||||||||||
密度ヒストグラム |
-試料の構成要素
-全体 : Complex of actin, myosin-1b, and calmodulin with ADP
全体 | 名称: Complex of actin, myosin-1b, and calmodulin with ADP |
---|---|
要素 |
|
-超分子 #1: Complex of actin, myosin-1b, and calmodulin with ADP
超分子 | 名称: Complex of actin, myosin-1b, and calmodulin with ADP タイプ: complex / ID: 1 / 親要素: 0 / 含まれる分子: #1-#3 |
---|---|
由来(天然) | 生物種: unidentified (未定義) |
-分子 #1: Unconventional myosin-Ib
分子 | 名称: Unconventional myosin-Ib / タイプ: protein_or_peptide / ID: 1 / コピー数: 1 / 光学異性体: LEVO |
---|---|
由来(天然) | 生物種: Rattus norvegicus (ドブネズミ) |
分子量 | 理論値: 84.14393 KDa |
配列 | 文字列: VKSSLLDNMI GVGDTVLLEP LNEETFIDNL KKRFDHNEIY TYIGSVVISV NPYRSLPIYS PEKVEDYRNR NFYELSPHIF ALSDEAYRS LRDQDKDQCI LITGESGAGK TEASKLVMSY VAAVCGKGAE VNQVKEQLLQ STPVLEAFGN AKTVRNDNSS R FGKYMDIE ...文字列: VKSSLLDNMI GVGDTVLLEP LNEETFIDNL KKRFDHNEIY TYIGSVVISV NPYRSLPIYS PEKVEDYRNR NFYELSPHIF ALSDEAYRS LRDQDKDQCI LITGESGAGK TEASKLVMSY VAAVCGKGAE VNQVKEQLLQ STPVLEAFGN AKTVRNDNSS R FGKYMDIE FDFKGDPLGG VISNYLLEKS RVVKQPRGER NFHVFYQLLS GASEELLHKL KLERDFSRYN YLSLDSAKVN GV DDAANFR TVRNAMQIVG FSDPEAESVL EVVAAVLKLG NIEFKPESRM NGLDESKIKD KNELKEICEL TSIDQVVLER AFS FRTVEA KQEKVSTTLN VAQAYYARDA LAKNLYSRLF SWLVNRINES IKAQTKVRKK VMGVLDIYGF EIFEDNSFEQ FIIN YCNEK LQQIFIELTL KEEQEEYIRE DIEWTHIDYF NNAIICDLIE NNTNGILAML DEECLRPGTV TDETFLEKLN QVCAT HQHF ESRMSKCSRF LNDTTLPHSC FRIQHYAGKV LYQVEGFVDK NNDLLYRDLS QAMWKAGHAL IKSLFPEGNP AKVNLK RPP TAGSQFKASV ATLMKNLQTK NPNYIRCIKP NDKKAAHIFS ESLVCHQIRY LGLLENVRVR RAGYAFRQAY EPCLERY KM LCKQTWPHWK GPARSGVEVL FNELEIPVEE YSFGRSKIFI RNPRTLFQLE DLRKQRLEDL ATLIQKIYRG WKCRTHFL L MKGLNDIF UniProtKB: Unconventional myosin-Ib |
-分子 #2: Calmodulin
分子 | 名称: Calmodulin / タイプ: protein_or_peptide / ID: 2 / コピー数: 1 / 光学異性体: LEVO |
---|---|
由来(天然) | 生物種: unidentified (未定義) |
分子量 | 理論値: 16.72135 KDa |
配列 | 文字列: ADQLTEEQIA EFKEAFSLFD KDGDGTITTK ELGTVMRSLG QNPTEAELQD MINEVDADGN GTIDFPEFLT MMARKMKDTD SEEEIREAF RVFDKDGNGY ISAAELRHVM TNLGEKLTDE EVDEMIREAD IDGDGQVNYE EFVQMMTAK |
-分子 #3: Actin, alpha skeletal muscle
分子 | 名称: Actin, alpha skeletal muscle / タイプ: protein_or_peptide / ID: 3 / コピー数: 5 / 光学異性体: LEVO |
---|---|
由来(天然) | 生物種: Oryctolagus cuniculus (ウサギ) |
分子量 | 理論値: 41.862613 KDa |
配列 | 文字列: DEDETTALVC DNGSGLVKAG FAGDDAPRAV FPSIVGRPRH QGVMVGMGQK DSYVGDEAQS KRGILTLKYP IEHGIITNWD DMEKIWHHT FYNELRVAPE EHPTLLTEAP LNPKANREKM TQIMFETFNV PAMYVAIQAV LSLYASGRTT GIVLDSGDGV T HNVPIYEG ...文字列: DEDETTALVC DNGSGLVKAG FAGDDAPRAV FPSIVGRPRH QGVMVGMGQK DSYVGDEAQS KRGILTLKYP IEHGIITNWD DMEKIWHHT FYNELRVAPE EHPTLLTEAP LNPKANREKM TQIMFETFNV PAMYVAIQAV LSLYASGRTT GIVLDSGDGV T HNVPIYEG YALPHAIMRL DLAGRDLTDY LMKILTERGY SFVTTAEREI VRDIKEKLCY VALDFENEMA TAASSSSLEK SY ELPDGQV ITIGNERFRC PETLFQPSFI GMESAGIHET TYNSIMKCDI DIRKDLYANN VMSGGTTMYP GIADRMQKEI TAL APSTMK IKIIAPPERK YSVWIGGSIL ASLSTFQQMW ITKQEYDEAG PSIVHRKCF UniProtKB: Actin, alpha skeletal muscle |
-分子 #4: MAGNESIUM ION
分子 | 名称: MAGNESIUM ION / タイプ: ligand / ID: 4 / コピー数: 6 / 式: MG |
---|---|
分子量 | 理論値: 24.305 Da |
-分子 #5: ADENOSINE-5'-DIPHOSPHATE
分子 | 名称: ADENOSINE-5'-DIPHOSPHATE / タイプ: ligand / ID: 5 / コピー数: 6 / 式: ADP |
---|---|
分子量 | 理論値: 427.201 Da |
Chemical component information | ChemComp-ADP: |
-実験情報
-構造解析
手法 | クライオ電子顕微鏡法 |
---|---|
解析 | らせん対称体再構成法 |
試料の集合状態 | helical array |
-試料調製
緩衝液 | pH: 7 |
---|---|
凍結 | 凍結剤: ETHANE |
-電子顕微鏡法
顕微鏡 | FEI TITAN KRIOS |
---|---|
撮影 | フィルム・検出器のモデル: GATAN K2 SUMMIT (4k x 4k) 平均露光時間: 11.0 sec. / 平均電子線量: 50.0 e/Å2 |
電子線 | 加速電圧: 300 kV / 電子線源: FIELD EMISSION GUN |
電子光学系 | 照射モード: SPOT SCAN / 撮影モード: BRIGHT FIELD |
実験機器 | モデル: Titan Krios / 画像提供: FEI Company |
-画像解析
最終 再構成 | 想定した対称性 - らせんパラメータ - Δz: 27.5 Å 想定した対称性 - らせんパラメータ - ΔΦ: -167.4 ° 想定した対称性 - らせんパラメータ - 軸対称性: C1 (非対称) 解像度のタイプ: BY AUTHOR / 解像度: 3.8 Å / 解像度の算出法: FSC 0.143 CUT-OFF 詳細: Resolution estimated by post-processing in RELION using a mask with soft edges that included only the central subunit. 使用した粒子像数: 7700 |
---|---|
初期モデル | モデルのタイプ: OTHER |
最終 角度割当 | タイプ: NOT APPLICABLE |
-原子モデル構築 1
精密化 | 空間: REAL / プロトコル: FLEXIBLE FIT |
---|---|
得られたモデル | PDB-6c1g: |