+データを開く
-基本情報
登録情報 | データベース: EMDB / ID: EMD-18198 | ||||||||||||||||||
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タイトル | Helical reconstruction of the relaxed thick filament from FIB milled left ventricular mouse myofibrils | ||||||||||||||||||
マップデータ | Helical reconstruction of the relaxed thick filament from FIB-milled mouse left ventricular myofibrils | ||||||||||||||||||
試料 |
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キーワード | Mammalian (哺乳類) / Muscle (骨格筋) / Thick filament (ミオフィラメント) / Cardiac (心臓) / MOTOR PROTEIN (モータータンパク質) | ||||||||||||||||||
機能・相同性 | 機能・相同性情報 forward locomotion / heart growth / striated muscle cell development / regulation of relaxation of cardiac muscle / muscle cell fate specification / Striated Muscle Contraction / regulation of slow-twitch skeletal muscle fiber contraction / regulation of the force of skeletal muscle contraction / contractile muscle fiber / cardiac myofibril ...forward locomotion / heart growth / striated muscle cell development / regulation of relaxation of cardiac muscle / muscle cell fate specification / Striated Muscle Contraction / regulation of slow-twitch skeletal muscle fiber contraction / regulation of the force of skeletal muscle contraction / contractile muscle fiber / cardiac myofibril / regulation of striated muscle contraction / cardiac myofibril assembly / muscle myosin complex / muscle filament sliding / ventricular system development / detection of muscle stretch / transition between fast and slow fiber / regulation of the force of heart contraction / myosin filament / muscle cell development / cardiac muscle tissue morphogenesis / adult heart development / cardiac muscle tissue development / cardiac muscle hypertrophy in response to stress / M band / I band / myosin complex / A band / myosin II complex / structural constituent of muscle / ventricular cardiac muscle tissue morphogenesis / ankyrin binding / microfilament motor activity / sarcomere organization / myofibril / heart contraction / intracellular non-membrane-bounded organelle / positive regulation of the force of heart contraction / cytoskeletal motor activity / skeletal muscle contraction / actin monomer binding / somitogenesis / striated muscle contraction / ATP metabolic process / heart morphogenesis / stress fiber / cardiac muscle contraction / regulation of heart rate / sarcomere / post-embryonic development / muscle contraction / negative regulation of cell growth / structural constituent of cytoskeleton / Z disc / actin filament binding / マイクロフィラメント / heart development / protein tyrosine kinase activity / in utero embryonic development / 細胞骨格 / calmodulin binding / non-specific serine/threonine protein kinase / リン酸化 / protein serine kinase activity / protein serine/threonine kinase activity / calcium ion binding / protein-containing complex binding / ATP hydrolysis activity / ATP binding / identical protein binding / metal ion binding / 細胞核 / 細胞質 類似検索 - 分子機能 | ||||||||||||||||||
生物種 | Mus musculus (ハツカネズミ) | ||||||||||||||||||
手法 | サブトモグラム平均法 / クライオ電子顕微鏡法 / 解像度: 18.0 Å | ||||||||||||||||||
データ登録者 | Tamborrini D / Raunser S | ||||||||||||||||||
資金援助 | ドイツ, European Union, 英国, 5件
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引用 | ジャーナル: Nature / 年: 2023 タイトル: Structure of the native myosin filament in the relaxed cardiac sarcomere. 著者: Davide Tamborrini / Zhexin Wang / Thorsten Wagner / Sebastian Tacke / Markus Stabrin / Michael Grange / Ay Lin Kho / Martin Rees / Pauline Bennett / Mathias Gautel / Stefan Raunser / 要旨: The thick filament is a key component of sarcomeres, the basic units of striated muscle. Alterations in thick filament proteins are associated with familial hypertrophic cardiomyopathy and other ...The thick filament is a key component of sarcomeres, the basic units of striated muscle. Alterations in thick filament proteins are associated with familial hypertrophic cardiomyopathy and other heart and muscle diseases. Despite the central importance of the thick filament, its molecular organization remains unclear. Here we present the molecular architecture of native cardiac sarcomeres in the relaxed state, determined by cryo-electron tomography. Our reconstruction of the thick filament reveals the three-dimensional organization of myosin, titin and myosin-binding protein C (MyBP-C). The arrangement of myosin molecules is dependent on their position along the filament, suggesting specialized capacities in terms of strain susceptibility and force generation. Three pairs of titin-α and titin-β chains run axially along the filament, intertwining with myosin tails and probably orchestrating the length-dependent activation of the sarcomere. Notably, whereas the three titin-α chains run along the entire length of the thick filament, titin-β chains do not. The structure also demonstrates that MyBP-C bridges thin and thick filaments, with its carboxy-terminal region binding to the myosin tails and directly stabilizing the OFF state of the myosin heads in an unforeseen manner. These results provide a foundation for future research investigating muscle disorders involving sarcomeric components. | ||||||||||||||||||
履歴 |
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-構造の表示
添付画像 |
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-ダウンロードとリンク
-EMDBアーカイブ
マップデータ | emd_18198.map.gz | 1.9 MB | EMDBマップデータ形式 | |
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ヘッダ (付随情報) | emd-18198-v30.xml emd-18198.xml | 19.5 KB 19.5 KB | 表示 表示 | EMDBヘッダ |
画像 | emd_18198.png | 43 KB | ||
Filedesc metadata | emd-18198.cif.gz | 8.1 KB | ||
アーカイブディレクトリ | http://ftp.pdbj.org/pub/emdb/structures/EMD-18198 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-18198 | HTTPS FTP |
-関連構造データ
関連構造データ | 8q6tMC 8q4gC C: 同じ文献を引用 (文献) M: このマップから作成された原子モデル |
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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
EMDBのページ | EMDB (EBI/PDBe) / EMDataResource |
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「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_18198.map.gz / 形式: CCP4 / 大きさ: 196.4 MB / タイプ: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||
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注釈 | Helical reconstruction of the relaxed thick filament from FIB-milled mouse left ventricular myofibrils | ||||||||||||||||||||
ボクセルのサイズ | X=Y=Z: 5.83 Å | ||||||||||||||||||||
密度 |
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対称性 | 空間群: 1 | ||||||||||||||||||||
詳細 | EMDB XML:
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-添付データ
-試料の構成要素
-全体 : Relaxed thick filament; A-band region; C-type super-repeat
全体 | 名称: Relaxed thick filament; A-band region; C-type super-repeat |
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要素 |
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-超分子 #1: Relaxed thick filament; A-band region; C-type super-repeat
超分子 | 名称: Relaxed thick filament; A-band region; C-type super-repeat タイプ: cell / ID: 1 / 親要素: 0 / 含まれる分子: #1-#3, #5, #4 詳細: Single asymmetrical unit from the relaxed thick filament obtained from FIB milled left ventricular mouse myofibrils |
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由来(天然) | 生物種: Mus musculus (ハツカネズミ) |
-分子 #1: Myosin-7
分子 | 名称: Myosin-7 / タイプ: protein_or_peptide / ID: 1 / コピー数: 6 / 光学異性体: LEVO |
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由来(天然) | 生物種: Mus musculus (ハツカネズミ) |
分子量 | 理論値: 223.226531 KDa |
配列 | 文字列: MADAEMAAFG AAAPFLRKSE KERLEAQTRP FDLKKDVFVP DDKEEFVKAK IVSREGGKVT AETENGKTVT VKEDQVMQQN PPKFDKIED MAMLTFLHEP AVLYNLKERY ASWMIYTYSG LFCVTVNPYK WLPVYNAEVV AAYRGKKRSE APPHIFSISD N AYQYMLTD ...文字列: MADAEMAAFG AAAPFLRKSE KERLEAQTRP FDLKKDVFVP DDKEEFVKAK IVSREGGKVT AETENGKTVT VKEDQVMQQN PPKFDKIED MAMLTFLHEP AVLYNLKERY ASWMIYTYSG LFCVTVNPYK WLPVYNAEVV AAYRGKKRSE APPHIFSISD N AYQYMLTD RENQSILITG ESGAGKTVNT KRVIQYFAVI AAIGDRSKKD QTPGKGTLED QIIQANPALE AFGNAKTVRN DN SSRFGKF IRIHFGATGK LASADIETYL LEKSRVIFQL KAERDYHIFY QILSNKKPEL LDMLLITNNP YDYAFISQGE TTV ASIDDS EELMATDSAF DVLGFTPEEK NSIYKLTGAI MHFGNMKFKQ KQREEQAEPD GTEEADKSAY LMGLNSADLL KGLC HPRVK VGNEYVTKGQ NVQQVSYAIG ALAKSVYEKM FNWMVTRINA TLETKQPRQY FIGVLDIAGF EIFDFNSFEQ LCINF TNEK LQQFFNHHMF VLEQEEYKKE GIEWTFIDFG MDLQACIDLI EKPMGIMSIL EEECMFPKAT DMTFKAKLYD NHLGKS NNF QKPRNVKGKQ EAHFSLVHYA GTVDYNILGW LQKNKDPLNE TVVGLYQKSS LKLLSNLFAN YAGADAPADK GKGKAKK GS SFQTVSALHR ENLNKLMTNL RSTHPHFVRC IIPNETKSPG VMDNPLVMHQ LRCNGVLEGI RICRKGFPNR ILYGDFRQ R YRILNPAAIP EGQFIDSRKG AEKLLGSLDI DHNQYKFGHT KVFFKAGLLG LLEEMRDERL SRIITRIQAQ SRGVLSRME FKKLLERRDS LLIIQWNIRA FMGVKNWPWM KLYFKIKPLL KSAETEKEMA TMKEEFGRVK DALEKSEARR KELEEKMVSL LQEKNDLQL QVQAEQDNLA DAEERCDQLI KNKIQLEAKV KEMTERLEDE EEMNAELTAK KRKLEDECSE LKRDIDDLEL T LAKVEKEK HATENKVKNL TEEMAGLDEI IVKLTKEKKA LQEAHQQALD DLQAEEDKVN TLTKAKVKLE QQVDDLEGSL EQ EKKVRMD LERAKRKLEG DLKLTQESIM DLENDKQQLD ERLKKKDFEL NALNARIEDE QALGSQLQKK LKELQARIEE LEE ELEAER TARAKVEKLR SDLSRELEEI SERLEEAGGA TSVQIEMNKK REAEFQKMRR DLEEATLQHE ATAAALRKKH ADSV AELGE QIDNLQRVKQ KLEKEKSEFK LELDDVTSNM EQIIKAKANL EKMCRTLEDQ MNEHRSKAEE TQRSVNDLTS QRAKL QTEN GELSRQLDEK EALISQLTRG KLTYTQQLED LKRQLEEEVK AKNALAHALQ SARHDCDLLR EQYEEETEAK AELQRV LSK ANSEVAQWRT KYETDAIQRT EELEEAKKKL AQRLQDAEEA VEAVNAKCSS LEKTKHRLQN EIEDLMVDVE RSNAAAA AL DKKQRNFDKI LAEWKQKYEE SQSELESSQK EARSLSTELF KLKNAYEESL EHLETFKREN KNLQEEISDL TEQLGSTG K SIHELEKIRK QLEAEKLELQ SALEEAEASL EHEEGKILRA QLEFNQIKAE IERKLAEKDE EMEQAKRNHL RMVDSLQTS LDAETRSRNE ALRVKKKMEG DLNEMEIQLS HANRMAAEAQ KQVKSLQSLL KDTQIQLDDA VRANDDLKEN IAIVERRNNL LQAELEELR AVVEQTERSR KLAEQELIET SERVQLLHSQ NTSLINQKKK MDADLSQLQT EVEEAVQECR NAEEKAKKAI T DAAMMAEE LKKEQDTSAH LERMKKNMEQ TIKDLQHRLD EAEQIALKGG KKQLQKLEAR VRELENELEA EQKRNAESVK GM RKSERRI KELTYQTEED RKNLLRLQDL VDKLQLKVKA YKRQAEEAEE QANTNLSKFR KVQHELDEAE ERADIAESQV NKL RAKSRD IGAKGLNEE UniProtKB: Myosin-7 |
-分子 #2: Myosin light chain 3
分子 | 名称: Myosin light chain 3 / タイプ: protein_or_peptide / ID: 2 / コピー数: 6 / 光学異性体: LEVO |
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由来(天然) | 生物種: Mus musculus (ハツカネズミ) |
分子量 | 理論値: 17.243553 KDa |
配列 | 文字列: IEFTPEQIEE FKEAFLLFDR TPKGEMKITY GQCGDVLRAL GQNPTQAEVL RVLGKPKQEE LNSKMMDFET FLPMLQHISK NKDTGTYED FVEGLRVFDK EGNGTVMGAE LRHVLATLGE RLTEDEVEKL MAGQEDSNGC INYEAFVKHI MAS UniProtKB: Myosin light chain 3 |
-分子 #3: Myosin regulatory light chain 2, ventricular/cardiac muscle isoform
分子 | 名称: Myosin regulatory light chain 2, ventricular/cardiac muscle isoform タイプ: protein_or_peptide / ID: 3 / コピー数: 6 / 光学異性体: LEVO |
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由来(天然) | 生物種: Mus musculus (ハツカネズミ) |
分子量 | 理論値: 18.259512 KDa |
配列 | 文字列: KKRIEGGSSN VFSMFEQTQI QEFKEAFTIM DQNRDGFIDK NDLRDTFAAL GRVNVKNEEI DEMIKEAPGP INFTVFLTMF GEKLKGADP EETILNAFKV FDPEGKGSLK ADYVREMLTT QAERFSKEEI DQMFAAFPPD VTGNLDYKNL VHIITHGEEK D UniProtKB: Myosin regulatory light chain 2, ventricular/cardiac muscle isoform |
-分子 #4: Myosin binding protein C, cardiac
分子 | 名称: Myosin binding protein C, cardiac / タイプ: protein_or_peptide / ID: 4 / コピー数: 2 / 光学異性体: LEVO |
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由来(天然) | 生物種: Mus musculus (ハツカネズミ) |
分子量 | 理論値: 44.777125 KDa |
配列 | 文字列: PIGPPGEPTH LAVEDVSDTT VSLKWRPPER VGAGGLDGYS VEYCQEGCSE WTPALQGLTE RTSMLVKDLP TGARLLFRVR AHNVAGPGG PIVTKEPVTV QEILQRPRLQ LPRHLRQTIQ KKVGEPVNLL IPFQGKPRPQ VTWTKEGQPL AGEEVSIRNS P TDTILFIR ...文字列: PIGPPGEPTH LAVEDVSDTT VSLKWRPPER VGAGGLDGYS VEYCQEGCSE WTPALQGLTE RTSMLVKDLP TGARLLFRVR AHNVAGPGG PIVTKEPVTV QEILQRPRLQ LPRHLRQTIQ KKVGEPVNLL IPFQGKPRPQ VTWTKEGQPL AGEEVSIRNS P TDTILFIR AARRTHSGTY QVTVRIENME DKATLILQIV DKPSPPQDIR IVETWGFNVA LEWKPPQDDG NTEIWGYTVQ KA DKKTMEW FTVLEHYRRT HCVVSELIIG NGYYFRVFSH NMVGSSDKAA ATKEPVFIPR PGITYEPPKY KALDFSEAPS FTQ PLANRS IIAGYNAILC CAVRGSPKPK ISWFKNGLDL GEDARFRMFC KQGVLTLEIR KPCPYDGGVY VCRATNLQGE AQCE UniProtKB: Myosin binding protein C, cardiac |
-分子 #5: Titin
分子 | 名称: Titin / タイプ: protein_or_peptide / ID: 5 / コピー数: 2 / 光学異性体: LEVO |
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由来(天然) | 生物種: Mus musculus (ハツカネズミ) |
分子量 | 理論値: 118.76632 KDa |
配列 | 文字列: DPCDPPGRPE AIVITRNSVT LKWKKPVYDG GSKITGYIVE KKDLPDGRWM KASFTNVVET EFTVTGLVED QRYEFRVIAR NAADNFSEP SESSGAITAR DEIDAPNASL DPKYRDVIIV HAGETFVLEA DIRGKPIPDI IWSKDGNELE ETAARMEIKS T LQKTTLIV ...文字列: DPCDPPGRPE AIVITRNSVT LKWKKPVYDG GSKITGYIVE KKDLPDGRWM KASFTNVVET EFTVTGLVED QRYEFRVIAR NAADNFSEP SESSGAITAR DEIDAPNASL DPKYRDVIIV HAGETFVLEA DIRGKPIPDI IWSKDGNELE ETAARMEIKS T LQKTTLIV KDCIRTDGGQ YTLKLSNVGG TKTIPITVKV LDRPGPPEGP LKVTGVTAEK CYLAWNPPLQ DGGASISHYI IE KRETSRL SWTQVSNEVQ ALNYKVTKLL PGNEYIFRVM AVNKYGIGEA LESEPVIACN PYKRPGPPST PEASAITKDS MVL TWTRPV DDGGAEIEGY ILEKRDKEGI RWTKCNKKTL TDLRFRVTGL TEGHSYEFRV AAENAAGVGE PSEPSVFYRA CDAL YPPGP PSNPKVTDTS RSSVSLAWNK PIYDGGAPVR GYVIELKKAA ADEWTTCTPP SGLQGKQFTV TKLKENTEYN FRICA FNTE GVGEPATIPG SVVAQERMEA PEIELDADLR KVVTLRASAT LRLFVTIKGR PEPEVKWEKA EGILTERAQI EVTSSY TML VIDNVTRFDS GRYNLTLENN SGSKTAFVNV RVLDSPSAPV NLTIREVKKD SVTLSWEPPL IDGGAKITNY IVEKRET TR KAYATITNNC TKNTFKIENL QEGCSYYFRV LASNEYGIGL PAETAEPVKV SEPPLPPGRV TLVDVTRNTA TIKWEKPE S DGGSKITGYV VEMQTKGSEK WSACTQVKTL ETTISGLTAG EEYVFRVAAV NEKGRSDPRQ LGVPVIAKDI EIKPSVELP FNTFNVKAND QLKIDIPFKG RPQATVAWKK DGQVLRETTR VNVASSKTVT TLSIKEASRE DVGTYELCVS NTAGSITVPI TVIVLDRPG PPGPIRIDEV SCDNVSISWN PPEYDGGCQI SNYIVEKRET TSTTWQVVSQ AVARTSIKIV RLTTGSEYQF R VCAENRYG KSSYSESSAV VAEYPFSPPG PPGTPKVVHA TKSTMVVSWQ VPVNDGGSQV IGYHLEYKER SSILWSKANK VL IADTQMK VSGLDEGLMY EYRVYAENIA GIGKCSKACE PV UniProtKB: チチン |
-実験情報
-構造解析
手法 | クライオ電子顕微鏡法 |
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解析 | サブトモグラム平均法 |
試料の集合状態 | cell |
-試料調製
緩衝液 | pH: 7.1 |
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凍結 | 凍結剤: ETHANE-PROPANE |
-電子顕微鏡法
顕微鏡 | FEI TITAN KRIOS |
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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: FLOOD BEAM / 撮影モード: BRIGHT FIELDBright-field microscopy / 最大 デフォーカス(公称値): 6.0 µm / 最小 デフォーカス(公称値): 3.0 µm / 倍率(公称値): 81000 |
試料ステージ | 試料ホルダーモデル: FEI TITAN KRIOS AUTOGRID HOLDER |
撮影 | フィルム・検出器のモデル: GATAN K3 BIOQUANTUM (6k x 4k) 平均電子線量: 3.4 e/Å2 |
実験機器 | モデル: Titan Krios / 画像提供: FEI Company |
-画像解析
抽出 | トモグラム数: 89 / 使用した粒子像数: 67492 |
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最終 角度割当 | タイプ: MAXIMUM LIKELIHOOD / ソフトウェア - 名称: RELION |
最終 再構成 | 想定した対称性 - らせんパラメータ - Δz: 430.0 Å 想定した対称性 - らせんパラメータ - ΔΦ: 0 ° 想定した対称性 - らせんパラメータ - 軸対称性: C3 (3回回転対称) 解像度のタイプ: BY AUTHOR / 解像度: 18.0 Å / 解像度の算出法: FSC 0.143 CUT-OFF / ソフトウェア - 名称: RELION 詳細: Helical reconstruction containing 4.5x repeats extrapolated from a 3x repeat reconstruction (EMD-18146) 使用したサブトモグラム数: 1589 |
-原子モデル構築 1
初期モデル | (Chain: AlphaFold, SwissModel) |
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得られたモデル | PDB-8q6t: |