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Open data
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Basic information
Entry | Database: PDB / ID: 6oua | ||||||
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Title | Cryo-EM structure of the yeast Ctf3 complex | ||||||
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![]() | CELL CYCLE / kinetochore / chromosome / cryo-em | ||||||
Function / homology | ![]() attachment of spindle microtubules to kinetochore / establishment of mitotic sister chromatid cohesion / mitotic spindle assembly checkpoint signaling / DNA replication initiation / meiotic cell cycle / chromosome segregation / kinetochore / cell division / nucleus Similarity search - Function | ||||||
Biological species | ![]() ![]() | ||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 4.18 Å | ||||||
![]() | Hinshaw, S.M. / Harrison, S.C. | ||||||
Funding support | ![]()
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![]() | ![]() Title: The structure of the yeast Ctf3 complex. Authors: Stephen M Hinshaw / Andrew N Dates / Stephen C Harrison / ![]() Abstract: Kinetochores are the chromosomal attachment points for spindle microtubules. They are also signaling hubs that control major cell cycle transitions and coordinate chromosome folding. Most well- ...Kinetochores are the chromosomal attachment points for spindle microtubules. They are also signaling hubs that control major cell cycle transitions and coordinate chromosome folding. Most well-studied eukaryotes rely on a conserved set of factors, which are divided among two loosely-defined groups, for these functions. Outer kinetochore proteins contact microtubules or regulate this contact directly. Inner kinetochore proteins designate the kinetochore assembly site by recognizing a specialized nucleosome containing the H3 variant Cse4/CENP-A. We previously determined the structure, resolved by cryo-electron microscopy (cryo-EM), of the yeast Ctf19 complex (Ctf19c, homologous to the vertebrate CCAN), providing a high-resolution view of inner kinetochore architecture (Hinshaw and Harrison, 2019). We now extend these observations by reporting a near-atomic model of the Ctf3 complex, the outermost Ctf19c sub-assembly seen in our original cryo-EM density. The model is sufficiently well-determined by the new data to enable molecular interpretation of Ctf3 recruitment and function. | ||||||
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Structure visualization
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Structure viewer | Molecule: ![]() ![]() |
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Downloads & links
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Download
PDBx/mmCIF format | ![]() | 136.8 KB | Display | ![]() |
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PDB format | ![]() | 99.5 KB | Display | ![]() |
PDBx/mmJSON format | ![]() | Tree view | ![]() | |
Others | ![]() |
-Validation report
Summary document | ![]() | 901.8 KB | Display | ![]() |
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Full document | ![]() | 907.8 KB | Display | |
Data in XML | ![]() | 28.9 KB | Display | |
Data in CIF | ![]() | 41.9 KB | Display | |
Arichive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 20200MC M: map data used to model this data C: citing same article ( |
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Similar structure data |
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Links
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Assembly
Deposited unit | ![]()
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Components
#1: Protein | Mass: 84617.891 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() Production host: ![]() ![]() |
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#2: Protein | Mass: 21438.359 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() Production host: ![]() ![]() |
#3: Protein | Mass: 27874.799 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() 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: Ctf3 complex / Type: COMPLEX / Entity ID: all / Source: RECOMBINANT |
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Source (natural) | Organism: ![]() ![]() |
Source (recombinant) | Organism: ![]() ![]() |
Buffer solution | pH: 8.5 |
Specimen | Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES / Details: Recombinant protein frozen in vitreous ice |
Specimen support | Grid material: COPPER / Grid type: C-flat-2/2 |
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 magnification: 105000 X / Cs: 2.7 mm / C2 aperture diameter: 50 µm |
Specimen holder | Cryogen: NITROGEN / Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER |
Image recording | Electron dose: 50.7 e/Å2 / Film or detector model: GATAN K3 (6k x 4k) / Num. of grids imaged: 1 |
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Processing
Software | Name: PHENIX / Version: 1.13_2998: / Classification: refinement |
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EM software | Name: SerialEM / Version: 3.7 / Category: image acquisition |
Image processing | Details: Counting mode |
CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION |
Symmetry | Point symmetry: C1 (asymmetric) |
3D reconstruction | Resolution: 4.18 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 71632 / Symmetry type: POINT |
Atomic model building | Space: REAL |