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- PDB-8ovx: Cryo-EM structure of yeast CENP-OPQU+ bound to the CENP-A N-terminus -
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Open data
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Basic information
Entry | Database: PDB / ID: 8ovx | |||||||||||||||
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Title | Cryo-EM structure of yeast CENP-OPQU+ bound to the CENP-A N-terminus | |||||||||||||||
![]() | (Inner kinetochore subunit ...) x 6 | |||||||||||||||
![]() | CELL CYCLE / kinetochore / point centromere / CENP-A nucleosome / topological entrapment / centromeric DNA | |||||||||||||||
Function / homology | ![]() negative regulation of meiotic DNA double-strand break formation involved in reciprocal meiotic recombination / COMA complex / Mis6-Sim4 complex / centromere complex assembly / attachment of spindle microtubules to kinetochore / protein localization to chromosome, centromeric region / establishment of mitotic sister chromatid cohesion / spindle pole body / protein localization to kinetochore / mitotic spindle assembly checkpoint signaling ...negative regulation of meiotic DNA double-strand break formation involved in reciprocal meiotic recombination / COMA complex / Mis6-Sim4 complex / centromere complex assembly / attachment of spindle microtubules to kinetochore / protein localization to chromosome, centromeric region / establishment of mitotic sister chromatid cohesion / spindle pole body / protein localization to kinetochore / mitotic spindle assembly checkpoint signaling / meiotic cell cycle / chromosome segregation / kinetochore / cell division / nucleus / cytoplasm Similarity search - Function | |||||||||||||||
Biological species | ![]() ![]() | |||||||||||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.4 Å | |||||||||||||||
![]() | Dendooven, T.D. / Zhang, Z. / Yang, J. / McLaughlin, S. / Schwabb, J. / Scheres, S. / Yatskevich, S. | |||||||||||||||
Funding support | ![]() ![]()
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![]() | ![]() Title: Cryo-EM structure of the complete inner kinetochore of the budding yeast point centromere. Authors: Tom Dendooven / Ziguo Zhang / Jing Yang / Stephen H McLaughlin / Johannes Schwab / Sjors H W Scheres / Stanislau Yatskevich / David Barford / ![]() Abstract: The point centromere of budding yeast specifies assembly of the large kinetochore complex to mediate chromatid segregation. Kinetochores comprise the centromere-associated inner kinetochore (CCAN) ...The point centromere of budding yeast specifies assembly of the large kinetochore complex to mediate chromatid segregation. Kinetochores comprise the centromere-associated inner kinetochore (CCAN) complex and the microtubule-binding outer kinetochore KNL1-MIS12-NDC80 (KMN) network. The budding yeast inner kinetochore also contains the DNA binding centromere-binding factor 1 (CBF1) and CBF3 complexes. We determined the cryo-electron microscopy structure of the yeast inner kinetochore assembled onto the centromere-specific centromere protein A nucleosomes (CENP-A). This revealed a central CENP-A with extensively unwrapped DNA ends. These free DNA duplexes bind two CCAN protomers, one of which entraps DNA topologically, positioned on the centromere DNA element I (CDEI) motif by CBF1. The two CCAN protomers are linked through CBF3 forming an arch-like configuration. With a structural mechanism for how CENP-A can also be linked to KMN involving only CENP-QU, we present a model for inner kinetochore assembly onto a point centromere and how it organizes the outer kinetochore for chromosome attachment to the mitotic spindle. | |||||||||||||||
History |
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Structure visualization
Structure viewer | Molecule: ![]() ![]() |
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Downloads & links
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Download
PDBx/mmCIF format | ![]() | 184.1 KB | Display | ![]() |
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PDB format | ![]() | 131.3 KB | Display | ![]() |
PDBx/mmJSON format | ![]() | Tree view | ![]() | |
Others | ![]() |
-Validation report
Summary document | ![]() | 1 MB | Display | ![]() |
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Full document | ![]() | 1 MB | Display | |
Data in XML | ![]() | 32.3 KB | Display | |
Data in CIF | ![]() | 47.4 KB | Display | |
Arichive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 17225MC ![]() 8ovwC ![]() 8ow0C ![]() 8ow1C M: map data used to model this data C: citing same article ( |
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Similar structure data | Similarity search - Function & homology ![]() |
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Links
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Assembly
Deposited unit | ![]()
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Components
-Inner kinetochore subunit ... , 6 types, 6 molecules OPQUYZ
#1: Protein | Mass: 43028.879 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() Gene: MCM21, CTF5, YDR318W / Production host: ![]() |
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#2: Protein | Mass: 42841.113 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() Gene: CTF19, MCM18, YPL018W, LPB13W / Production host: ![]() |
#3: Protein | Mass: 47427.246 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() Gene: OKP1, YGR179C / Production host: ![]() |
#4: Protein | Mass: 37506.723 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() Gene: AME1, ARP100, YBR211C, YBR1458 / Production host: ![]() |
#5: Protein | Mass: 27006.451 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() Gene: NKP1, YDR383C / Production host: ![]() |
#6: Protein | Mass: 17877.033 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() Gene: NKP2, YLR315W / Production host: ![]() |
-Experimental details
-Experiment
Experiment | Method: ELECTRON MICROSCOPY |
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EM experiment | Aggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction |
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Sample preparation
Component | Name: A complex of CBF1-CCAN bound to centromeric C0N3 DNA / Type: COMPLEX / Entity ID: all / Source: RECOMBINANT |
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Molecular weight | Experimental value: NO |
Source (natural) | Organism: ![]() ![]() |
Source (recombinant) | Organism: ![]() |
Buffer solution | pH: 8 |
Specimen | Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES |
Vitrification | Cryogen name: ETHANE |
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Electron microscopy imaging
Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
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Microscopy | Model: FEI TITAN KRIOS |
Electron gun | Electron source: ![]() |
Electron lens | Mode: BRIGHT FIELD / Nominal defocus max: 2600 nm / Nominal defocus min: 1000 nm |
Image recording | Electron dose: 40 e/Å2 / Film or detector model: GATAN K3 BIOQUANTUM (6k x 4k) |
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Processing
Software | Name: PHENIX / Version: 1.18.2_3874: / Classification: refinement | ||||||||||||||||||||||||
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CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||
3D reconstruction | Resolution: 3.4 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 595147 / Symmetry type: POINT | ||||||||||||||||||||||||
Refine LS restraints |
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