+データを開く
-基本情報
登録情報 | データベース: EMDB / ID: EMD-12880 | |||||||||
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タイトル | Scc2 bound to cohesin ATPase heads | |||||||||
マップデータ | ||||||||||
試料 |
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機能・相同性 | 機能・相同性情報 Establishment of Sister Chromatid Cohesion / Resolution of Sister Chromatid Cohesion / DNA secondary structure binding / meiotic cohesin complex / establishment of meiotic sister chromatid cohesion / cohesin complex / mitotic cohesin complex / synaptonemal complex assembly / SUMOylation of DNA damage response and repair proteins / meiotic sister chromatid cohesion ...Establishment of Sister Chromatid Cohesion / Resolution of Sister Chromatid Cohesion / DNA secondary structure binding / meiotic cohesin complex / establishment of meiotic sister chromatid cohesion / cohesin complex / mitotic cohesin complex / synaptonemal complex assembly / SUMOylation of DNA damage response and repair proteins / meiotic sister chromatid cohesion / replication-born double-strand break repair via sister chromatid exchange / establishment of mitotic sister chromatid cohesion / reciprocal meiotic recombination / sister chromatid cohesion / mitotic sister chromatid cohesion / minor groove of adenine-thymine-rich DNA binding / mitotic sister chromatid segregation / G2/M transition of mitotic cell cycle / double-strand break repair / double-stranded DNA binding / cell division / protein kinase binding / ATP hydrolysis activity / DNA binding / ATP binding / identical protein binding / nucleus 類似検索 - 分子機能 | |||||||||
生物種 | Saccharomyces cerevisiae (パン酵母) | |||||||||
手法 | 単粒子再構成法 / クライオ電子顕微鏡法 / 解像度: 13.0 Å | |||||||||
データ登録者 | Gonzalez Llamazares A / Lee B / Lowe J | |||||||||
引用 | ジャーナル: Elife / 年: 2021 タイトル: Folding of cohesin's coiled coil is important for Scc2/4-induced association with chromosomes. 著者: Naomi J Petela / Andres Gonzalez Llamazares / Sarah Dixon / Bin Hu / Byung-Gil Lee / Jean Metson / Heekyo Seo / Antonio Ferrer-Harding / Menelaos Voulgaris / Thomas Gligoris / James Collier / ...著者: Naomi J Petela / Andres Gonzalez Llamazares / Sarah Dixon / Bin Hu / Byung-Gil Lee / Jean Metson / Heekyo Seo / Antonio Ferrer-Harding / Menelaos Voulgaris / Thomas Gligoris / James Collier / Byung-Ha Oh / Jan Löwe / Kim A Nasmyth / 要旨: Cohesin's association with and translocation along chromosomal DNAs depend on an ATP hydrolysis cycle driving the association and subsequent release of DNA. This involves DNA being 'clamped' by Scc2 ...Cohesin's association with and translocation along chromosomal DNAs depend on an ATP hydrolysis cycle driving the association and subsequent release of DNA. This involves DNA being 'clamped' by Scc2 and ATP-dependent engagement of cohesin's Smc1 and Smc3 head domains. Scc2's replacement by Pds5 abrogates cohesin's ATPase and has an important role in halting DNA loop extrusion. The ATPase domains of all SMC proteins are separated from their hinge dimerisation domains by 50-nm-long coiled coils, which have been observed to zip up along their entire length and fold around an elbow, thereby greatly shortening the distance between hinges and ATPase heads. Whether folding exists in vivo or has any physiological importance is not known. We present here a cryo-EM structure of the form of cohesin that reveals the structure of folded and zipped-up coils in unprecedented detail and shows that Scc2 can associate with Smc1's ATPase head even when it is fully disengaged from that of Smc3. Using cysteine-specific crosslinking, we show that cohesin's coiled coils are frequently folded in vivo, including when cohesin holds sister chromatids together. Moreover, we describe a mutation () within Smc1's hinge that alters how Scc2 and Pds5 interact with Smc1's hinge and that enables Scc2 to support loading in the absence of its normal partner Scc4. The mutant phenotype of loading without Scc4 is only explicable if loading depends on an association between Scc2/4 and cohesin's hinge, which in turn requires coiled coil folding. | |||||||||
履歴 |
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-構造の表示
ムービー |
ムービービューア |
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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_12880.map.gz | 15.2 MB | EMDBマップデータ形式 | |
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ヘッダ (付随情報) | emd-12880-v30.xml emd-12880.xml | 7.5 KB 7.5 KB | 表示 表示 | EMDBヘッダ |
FSC (解像度算出) | emd_12880_fsc.xml | 7.3 KB | 表示 | FSCデータファイル |
画像 | emd_12880.png | 21.7 KB | ||
アーカイブディレクトリ | http://ftp.pdbj.org/pub/emdb/structures/EMD-12880 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-12880 | HTTPS FTP |
-検証レポート
文書・要旨 | emd_12880_validation.pdf.gz | 239.3 KB | 表示 | EMDB検証レポート |
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文書・詳細版 | emd_12880_full_validation.pdf.gz | 238.4 KB | 表示 | |
XML形式データ | emd_12880_validation.xml.gz | 9.8 KB | 表示 | |
CIF形式データ | emd_12880_validation.cif.gz | 12.4 KB | 表示 | |
アーカイブディレクトリ | https://ftp.pdbj.org/pub/emdb/validation_reports/EMD-12880 ftp://ftp.pdbj.org/pub/emdb/validation_reports/EMD-12880 | HTTPS FTP |
-関連構造データ
-リンク
EMDBのページ | EMDB (EBI/PDBe) / EMDataResource |
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-マップ
ファイル | ダウンロード / ファイル: emd_12880.map.gz / 形式: CCP4 / 大きさ: 30.5 MB / タイプ: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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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: 1.72 Å | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
密度 |
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対称性 | 空間群: 1 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
詳細 | EMDB XML:
CCP4マップ ヘッダ情報:
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-添付データ
-試料の構成要素
-全体 : Cohesin
全体 | 名称: Cohesin |
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要素 |
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-超分子 #1: Cohesin
超分子 | 名称: Cohesin / タイプ: complex / ID: 1 / 親要素: 0 |
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由来(天然) | 生物種: Saccharomyces cerevisiae (パン酵母) |
組換発現 | 生物種: Spodoptera frugiperda (ツマジロクサヨトウ) |
-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 | 単粒子再構成法 |
試料の集合状態 | particle |
-試料調製
緩衝液 | pH: 7.5 |
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凍結 | 凍結剤: ETHANE |
-電子顕微鏡法
顕微鏡 | TFS KRIOS |
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特殊光学系 | 位相板: VOLTA PHASE PLATE |
撮影 | フィルム・検出器のモデル: GATAN K2 SUMMIT (4k x 4k) 平均電子線量: 42.5 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: FLOOD BEAM / 撮影モード: BRIGHT FIELD |
実験機器 | モデル: Titan Krios / 画像提供: FEI Company |