+Open data
-Basic information
Entry | Database: EMDB / ID: EMD-13473 | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Title | Structure of the human CCAN deltaCT complex | ||||||||||||
Map data | 3D consensus refinement | ||||||||||||
Sample |
| ||||||||||||
Keywords | Kinetochore / chromosome segregation / centromere / CELL CYCLE | ||||||||||||
Function / homology | Function and homology information Mis6-Sim4 complex / positive regulation of protein localization to kinetochore / centromere complex assembly / kinetochore organization / metaphase chromosome alignment / kinetochore binding / sex differentiation / CENP-A containing chromatin assembly / chordate embryonic development / negative regulation of epithelial cell apoptotic process ...Mis6-Sim4 complex / positive regulation of protein localization to kinetochore / centromere complex assembly / kinetochore organization / metaphase chromosome alignment / kinetochore binding / sex differentiation / CENP-A containing chromatin assembly / chordate embryonic development / negative regulation of epithelial cell apoptotic process / kinetochore assembly / inner kinetochore / mitotic sister chromatid segregation / centriolar satellite / Amplification of signal from unattached kinetochores via a MAD2 inhibitory signal / Mitotic Prometaphase / EML4 and NUDC in mitotic spindle formation / Deposition of new CENPA-containing nucleosomes at the centromere / Resolution of Sister Chromatid Cohesion / NRIF signals cell death from the nucleus / mitotic spindle organization / positive regulation of epithelial cell proliferation / chromosome segregation / RHO GTPases Activate Formins / kinetochore / Separation of Sister Chromatids / actin cytoskeleton / chromosome / nuclear body / cell adhesion / cell division / regulation of DNA-templated transcription / nucleolus / apoptotic process / signal transduction / nucleoplasm / membrane / nucleus / cytosol / cytoplasm Similarity search - Function | ||||||||||||
Biological species | Homo sapiens (human) | ||||||||||||
Method | single particle reconstruction / cryo EM / Resolution: 3.2 Å | ||||||||||||
Authors | Muir KW / Yatskevich S / Bellini D / Barford D | ||||||||||||
Funding support | Germany, 3 items
| ||||||||||||
Citation | Journal: Science / Year: 2022 Title: Structure of the human inner kinetochore bound to a centromeric CENP-A nucleosome. Authors: Stanislau Yatskevich / Kyle W Muir / Dom Bellini / Ziguo Zhang / Jing Yang / Thomas Tischer / Masa Predin / Tom Dendooven / Stephen H McLaughlin / David Barford / Abstract: Kinetochores assemble onto specialized centromeric CENP-A (centromere protein A) nucleosomes (CENP-A) to mediate attachments between chromosomes and the mitotic spindle. We describe cryo-electron ...Kinetochores assemble onto specialized centromeric CENP-A (centromere protein A) nucleosomes (CENP-A) to mediate attachments between chromosomes and the mitotic spindle. We describe cryo-electron microscopy structures of the human inner kinetochore constitutive centromere associated network (CCAN) complex bound to CENP-A reconstituted onto α-satellite DNA. CCAN forms edge-on contacts with CENP-A, and a linker DNA segment of the α-satellite repeat emerges from the fully wrapped end of the nucleosome to thread through the central CENP-LN channel that tightly grips the DNA. The CENP-TWSX histone-fold module further augments DNA binding and partially wraps the linker DNA in a manner reminiscent of canonical nucleosomes. Our study suggests that the topological entrapment of the linker DNA by CCAN provides a robust mechanism by which kinetochores withstand both pushing and pulling forces exerted by the mitotic spindle. | ||||||||||||
History |
|
-Structure visualization
Supplemental images |
---|
-Downloads & links
-EMDB archive
Map data | emd_13473.map.gz | 15.1 MB | EMDB map data format | |
---|---|---|---|---|
Header (meta data) | emd-13473-v30.xml emd-13473.xml | 31.8 KB 31.8 KB | Display Display | EMDB header |
FSC (resolution estimation) | emd_13473_fsc.xml | 12.1 KB | Display | FSC data file |
Images | emd_13473.png | 52.5 KB | ||
Filedesc metadata | emd-13473.cif.gz | 8.2 KB | ||
Others | emd_13473_additional_1.map.gz emd_13473_additional_2.map.gz emd_13473_additional_3.map.gz emd_13473_additional_4.map.gz | 9.9 MB 9.4 MB 10.8 MB 116.6 MB | ||
Archive directory | http://ftp.pdbj.org/pub/emdb/structures/EMD-13473 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-13473 | HTTPS FTP |
-Validation report
Summary document | emd_13473_validation.pdf.gz | 399.8 KB | Display | EMDB validaton report |
---|---|---|---|---|
Full document | emd_13473_full_validation.pdf.gz | 399.3 KB | Display | |
Data in XML | emd_13473_validation.xml.gz | 12.7 KB | Display | |
Data in CIF | emd_13473_validation.cif.gz | 17 KB | Display | |
Arichive directory | https://ftp.pdbj.org/pub/emdb/validation_reports/EMD-13473 ftp://ftp.pdbj.org/pub/emdb/validation_reports/EMD-13473 | HTTPS FTP |
-Related structure data
Related structure data | 7pknMC 7pb4C 7pb8C 7piiC 7r5rC 7r5sC 7r5vC 7ywxC 7yyhC M: atomic model generated by this map C: citing same article (ref.) |
---|---|
Similar structure data | Similarity search - Function & homologyF&H Search |
-Links
EMDB pages | EMDB (EBI/PDBe) / EMDataResource |
---|---|
Related items in Molecule of the Month |
-Map
File | Download / File: emd_13473.map.gz / Format: CCP4 / Size: 149.9 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Annotation | 3D consensus refinement | ||||||||||||||||||||||||||||||||||||
Projections & slices | Image control
Images are generated by Spider. | ||||||||||||||||||||||||||||||||||||
Voxel size | X=Y=Z: 0.86 Å | ||||||||||||||||||||||||||||||||||||
Density |
| ||||||||||||||||||||||||||||||||||||
Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||
Details | EMDB XML:
|
-Supplemental data
-Additional map: HIKMLN body
File | emd_13473_additional_1.map | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Annotation | HIKMLN body | ||||||||||||
Projections & Slices |
| ||||||||||||
Density Histograms |
-Additional map: OPQURN body
File | emd_13473_additional_2.map | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Annotation | OPQURN body | ||||||||||||
Projections & Slices |
| ||||||||||||
Density Histograms |
-Additional map: OPQURN focused refinement
File | emd_13473_additional_3.map | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Annotation | OPQURN focused refinement | ||||||||||||
Projections & Slices |
| ||||||||||||
Density Histograms |
-Additional map: Combined focused map from PHENIX
File | emd_13473_additional_4.map | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Annotation | Combined focused map from PHENIX | ||||||||||||
Projections & Slices |
| ||||||||||||
Density Histograms |
-Sample components
+Entire : Human inner kinetochore CCAN
+Supramolecule #1: Human inner kinetochore CCAN
+Macromolecule #1: Centromere protein H
+Macromolecule #2: Centromere protein I
+Macromolecule #3: Centromere protein K
+Macromolecule #4: Centromere protein L
+Macromolecule #5: Centromere protein M
+Macromolecule #6: Centromere protein N
+Macromolecule #7: Centromere protein O
+Macromolecule #8: Centromere protein P
+Macromolecule #9: Centromere protein Q
+Macromolecule #10: Centromere protein U
+Macromolecule #11: Centromere protein R
+Macromolecule #12: water
-Experimental details
-Structure determination
Method | cryo EM |
---|---|
Processing | single particle reconstruction |
Aggregation state | particle |
-Sample preparation
Buffer | pH: 7.8 |
---|---|
Vitrification | Cryogen name: ETHANE |
-Electron microscopy
Microscope | FEI TITAN KRIOS |
---|---|
Image recording | Film or detector model: GATAN K3 (6k x 4k) / Average electron dose: 50.0 e/Å2 |
Electron beam | Acceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN |
Electron optics | Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Nominal defocus max: 3.0 µm / Nominal defocus min: 1.5 µm |
Experimental equipment | Model: Titan Krios / Image courtesy: FEI Company |