+データを開く
-基本情報
登録情報 | データベース: EMDB / ID: EMD-13151 | |||||||||
---|---|---|---|---|---|---|---|---|---|---|
タイトル | Negative stain EM 3D Reconstruction of the Dam1cBim1p complex. | |||||||||
マップデータ | A Dam1 complex dimer with an attached "arch" of one Bim1p. This sample was crosslinked with glutaraldehyde. | |||||||||
試料 |
| |||||||||
機能・相同性 | 機能・相同性情報 protein localization to microtubule plus-end / mitotic spindle polar microtubule / mitotic spindle orientation checkpoint signaling / thigmotropism / 2-micrometer plasmid partitioning / DASH complex / protein transport along microtubule to mitotic spindle pole body / mitotic sister chromatid biorientation / positive regulation of attachment of spindle microtubules to kinetochore / mitotic spindle pole body ...protein localization to microtubule plus-end / mitotic spindle polar microtubule / mitotic spindle orientation checkpoint signaling / thigmotropism / 2-micrometer plasmid partitioning / DASH complex / protein transport along microtubule to mitotic spindle pole body / mitotic sister chromatid biorientation / positive regulation of attachment of spindle microtubules to kinetochore / mitotic spindle pole body / mitotic spindle midzone / protein localization to microtubule / attachment of spindle microtubules to kinetochore / nuclear migration along microtubule / microtubule plus-end / negative regulation of microtubule depolymerization / microtubule plus-end binding / microtubule depolymerization / microtubule organizing center / mitotic sister chromatid cohesion / cytoplasmic microtubule / regulation of microtubule polymerization or depolymerization / spindle assembly / spindle midzone / positive regulation of microtubule polymerization / spindle microtubule / mitotic spindle / spindle pole / microtubule / cell division / identical protein binding / cytoplasm 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 / ネガティブ染色法 / 解像度: 35.0 Å | |||||||||
データ登録者 | Engelhard L / Bourque CB / Klink BU / Gatsogiannis C | |||||||||
資金援助 | ドイツ, 1件
| |||||||||
引用 | ジャーナル: EMBO J / 年: 2021 タイトル: Phospho-regulated Bim1/EB1 interactions trigger Dam1c ring assembly at the budding yeast outer kinetochore. 著者: Alexander Dudziak / Lena Engelhard / Cole Bourque / Björn Udo Klink / Pascaline Rombaut / Nikolay Kornakov / Karolin Jänen / Franz Herzog / Christos Gatsogiannis / Stefan Westermann / 要旨: Kinetochores form the link between chromosomes and microtubules of the mitotic spindle. The heterodecameric Dam1 complex (Dam1c) is a major component of the Saccharomyces cerevisiae outer ...Kinetochores form the link between chromosomes and microtubules of the mitotic spindle. The heterodecameric Dam1 complex (Dam1c) is a major component of the Saccharomyces cerevisiae outer kinetochore, assembling into 3 MDa-sized microtubule-embracing rings, but how ring assembly is specifically initiated in vivo remains to be understood. Here, we describe a molecular pathway that provides local control of ring assembly during the establishment of sister kinetochore bi-orientation. We show that Dam1c and the general microtubule plus end-associated protein (+TIP) Bim1/EB1 form a stable complex depending on a conserved motif in the Duo1 subunit of Dam1c. EM analyses reveal that Bim1 crosslinks protrusion domains of adjacent Dam1c heterodecamers and promotes the formation of oligomers with defined curvature. Disruption of the Dam1c-Bim1 interaction impairs kinetochore localization of Dam1c in metaphase and delays mitosis. Phosphorylation promotes Dam1c-Bim1 binding by relieving an intramolecular inhibition of the Dam1 C-terminus. In addition, Bim1 recruits Bik1/CLIP-170 to Dam1c and induces formation of full rings even in the absence of microtubules. Our data help to explain how new kinetochore end-on attachments are formed during the process of attachment error correction. | |||||||||
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_13151.map.gz | 422.6 KB | EMDBマップデータ形式 | |
---|---|---|---|---|
ヘッダ (付随情報) | emd-13151-v30.xml emd-13151.xml | 18.8 KB 18.8 KB | 表示 表示 | EMDBヘッダ |
画像 | emd_13151.png | 12.1 KB | ||
アーカイブディレクトリ | http://ftp.pdbj.org/pub/emdb/structures/EMD-13151 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-13151 | HTTPS FTP |
-検証レポート
文書・要旨 | emd_13151_validation.pdf.gz | 187.8 KB | 表示 | EMDB検証レポート |
---|---|---|---|---|
文書・詳細版 | emd_13151_full_validation.pdf.gz | 186.9 KB | 表示 | |
XML形式データ | emd_13151_validation.xml.gz | 5.3 KB | 表示 | |
CIF形式データ | emd_13151_validation.cif.gz | 6 KB | 表示 | |
アーカイブディレクトリ | https://ftp.pdbj.org/pub/emdb/validation_reports/EMD-13151 ftp://ftp.pdbj.org/pub/emdb/validation_reports/EMD-13151 | 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_13151.map.gz / 形式: CCP4 / 大きさ: 1.7 MB / タイプ: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
注釈 | A Dam1 complex dimer with an attached "arch" of one Bim1p. This sample was crosslinked with glutaraldehyde. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
ボクセルのサイズ | X=Y=Z: 4.92 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
-試料の構成要素
+全体 : Dam1pBim1p Complex
+超分子 #1: Dam1pBim1p Complex
+分子 #1: Ask1 protein of the Dam1c from S. cerevisiae
+分子 #2: Dam1 protein of the Dam1c from S. cerevisiae
+分子 #3: Dam1 protein of the Dam1c from S. cerevisiae
+分子 #4: Duo1 protein of the Dam1c from S. cerevisiae
+分子 #5: Spc19 protein of the Dam1c from S. cerevisiae
+分子 #6: Dad2p of the Dam1c from S. cerevisiae
+分子 #7: Dad1p of the Dam1c from S. cerevisiae
+分子 #8: Dad3p of the Dam1c from S. cerevisiae
+分子 #9: Dad4p of the Dam1c from S. cerevisiae
+分子 #10: Hsk3p of the Dam1c from S. cerevisiae
+分子 #11: Bim1p of S. cerevisiae
-実験情報
-構造解析
手法 | ネガティブ染色法 |
---|---|
解析 | 単粒子再構成法 |
試料の集合状態 | particle |
-試料調製
濃度 | 0.01 mg/mL |
---|---|
緩衝液 | pH: 7.4 / 構成要素: (式: HEPES, NaCl, TCEP, Glycerol) 詳細: The sample was crosslinked using 0.5 % glutaraldehyde. The crosslinking reaction was stopped after 60 seconds by the addition of TRIS |
染色 | タイプ: NEGATIVE / 材質: Uranyl Formate 詳細: 4 microl of complex were applied on freshly glow-discharged carbon-coated copper grids (Agar Scientific, G400C). After an incubation of 2 minutes, the sample was blotted with Whatman no. 4 ...詳細: 4 microl of complex were applied on freshly glow-discharged carbon-coated copper grids (Agar Scientific, G400C). After an incubation of 2 minutes, the sample was blotted with Whatman no. 4 filter paper, washed 2 times with ddH2O and stained with 0.75 % uranyl formate. |
グリッド | モデル: Homemade / 支持フィルム - 材質: CARBON / 前処理 - タイプ: GLOW DISCHARGE |
詳細 | 25 mM HEPES, pH 7.4, 200 mM NaCl, 1 mM MgCl2, 0.5 mM TCEP and 2.5 (v/v) % glycerol |
-電子顕微鏡法
顕微鏡 | JEOL 1400 |
---|---|
撮影 | フィルム・検出器のモデル: TVIPS TEMCAM-F416 (4k x 4k) 平均電子線量: 5.0 e/Å2 |
電子線 | 加速電圧: 120 kV / 電子線源: LAB6 |
電子光学系 | 照射モード: SPOT SCAN / 撮影モード: BRIGHT FIELD / Cs: 3.4 mm |
試料ステージ | 試料ホルダーモデル: JEOL |
-画像解析
初期モデル | モデルのタイプ: INSILICO MODEL In silico モデル: Initial Model was computed using SPHIRE (VIPER module) |
---|---|
最終 再構成 | 想定した対称性 - 点群: C1 (非対称) / 解像度のタイプ: BY AUTHOR / 解像度: 35.0 Å / 解像度の算出法: OTHER / ソフトウェア - 名称: SPHIRE / 使用した粒子像数: 36980 |
初期 角度割当 | タイプ: NOT APPLICABLE |
最終 角度割当 | タイプ: NOT APPLICABLE |