+データを開く
-基本情報
登録情報 | データベース: PDB / ID: 7ogt | ||||||
---|---|---|---|---|---|---|---|
タイトル | Folded elbow of cohesin | ||||||
要素 |
| ||||||
キーワード | CELL CYCLE / Cohesin / Elbow / Hinge / Smc1 / Smc3 / coiled coil / DNA | ||||||
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 | 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: 5.5 Å | ||||||
データ登録者 | Lee, B.-G. / Gonzalez Llamazares, A. / Collier, J. / Patele, N.J. / Nasmyth, K.A. / 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 |
|
-構造の表示
ムービー |
ムービービューア |
---|---|
構造ビューア | 分子: MolmilJmol/JSmol |
-ダウンロードとリンク
-ダウンロード
PDBx/mmCIF形式 | 7ogt.cif.gz | 239 KB | 表示 | PDBx/mmCIF形式 |
---|---|---|---|---|
PDB形式 | pdb7ogt.ent.gz | 159.3 KB | 表示 | PDB形式 |
PDBx/mmJSON形式 | 7ogt.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 | 7ogt_validation.pdf.gz | 643.4 KB | 表示 | wwPDB検証レポート |
---|---|---|---|---|
文書・詳細版 | 7ogt_full_validation.pdf.gz | 652.1 KB | 表示 | |
XML形式データ | 7ogt_validation.xml.gz | 37.4 KB | 表示 | |
CIF形式データ | 7ogt_validation.cif.gz | 60.7 KB | 表示 | |
アーカイブディレクトリ | https://data.pdbj.org/pub/pdb/validation_reports/og/7ogt ftp://data.pdbj.org/pub/pdb/validation_reports/og/7ogt | HTTPS FTP |
-関連構造データ
-リンク
-集合体
登録構造単位 |
|
---|---|
1 |
|
-要素
#1: タンパク質 | 分子量: 141491.781 Da / 分子数: 1 / 由来タイプ: 組換発現 由来: (組換発現) Saccharomyces cerevisiae (strain ATCC 204508 / S288c) (パン酵母) 株: ATCC 204508 / S288c / 遺伝子: SMC1, CHL10, YFL008W 発現宿主: Spodoptera frugiperda (ツマジロクサヨトウ) 参照: UniProt: P32908 |
---|---|
#2: タンパク質 | 分子量: 141539.984 Da / 分子数: 1 / 由来タイプ: 組換発現 由来: (組換発現) Saccharomyces cerevisiae (strain ATCC 204508 / S288c) (パン酵母) 株: ATCC 204508 / S288c / 遺伝子: SMC3, YJL074C, J1049 発現宿主: Spodoptera frugiperda (ツマジロクサヨトウ) 参照: UniProt: P47037 |
-実験情報
-実験
実験 | 手法: 電子顕微鏡法 |
---|---|
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: Cohesin / タイプ: COMPLEX / Entity ID: all / 由来: RECOMBINANT |
---|---|
由来(天然) | 生物種: Saccharomyces cerevisiae (パン酵母) |
由来(組換発現) | 生物種: Spodoptera frugiperda (ツマジロクサヨトウ) |
緩衝液 | pH: 7.5 |
試料 | 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: COPPER/RHODIUM / グリッドのサイズ: 200 divisions/in. / グリッドのタイプ: Quantifoil R2/2 |
急速凍結 | 凍結剤: ETHANE |
-電子顕微鏡撮影
実験機器 | モデル: Titan Krios / 画像提供: FEI Company |
---|---|
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 / Cs: 2.7 mm |
試料ホルダ | 試料ホルダーモデル: FEI TITAN KRIOS AUTOGRID HOLDER |
撮影 | 電子線照射量: 42.5 e/Å2 / 検出モード: COUNTING フィルム・検出器のモデル: GATAN K2 SUMMIT (4k x 4k) |
電子光学装置 | エネルギーフィルタースリット幅: 20 eV / 位相板: VOLTA PHASE PLATE |
-解析
EMソフトウェア | 名称: EPU / カテゴリ: 画像取得 |
---|---|
CTF補正 | タイプ: PHASE FLIPPING AND AMPLITUDE CORRECTION |
3次元再構成 | 解像度: 5.5 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 63892 / 対称性のタイプ: POINT |