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Open data
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Basic information
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| Title | Structure of the human CCAN CENP-A alpha-satellite complex | ||||||||||||
Map data | Local resolution filtered cryosparc homogeneous refinement map | ||||||||||||
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Keywords | Chromosome / kinetochore / cell division / centromere / CELL CYCLE | ||||||||||||
| Function / homology | Function and homology informationFANCM-MHF complex / Mis6-Sim4 complex / positive regulation of protein localization to kinetochore / : / kinetochore organization / Fanconi anaemia nuclear complex / spindle attachment to meiosis I kinetochore / metaphase chromosome alignment / kinetochore binding / CENP-A containing chromatin assembly ...FANCM-MHF complex / Mis6-Sim4 complex / positive regulation of protein localization to kinetochore / : / kinetochore organization / Fanconi anaemia nuclear complex / spindle attachment to meiosis I kinetochore / metaphase chromosome alignment / kinetochore binding / CENP-A containing chromatin assembly / sex differentiation / centromeric DNA binding / resolution of meiotic recombination intermediates / chordate embryonic development / negative regulation of epithelial cell apoptotic process / kinetochore assembly / protein localization to chromosome, centromeric region / attachment of mitotic spindle microtubules to kinetochore / condensed chromosome, centromeric region / inner kinetochore / replication fork processing / establishment of mitotic spindle orientation / mitotic sister chromatid segregation / mitotic cytokinesis / chromosome, centromeric region / chromosome organization / interstrand cross-link repair / pericentric heterochromatin / negative regulation of megakaryocyte differentiation / protein localization to CENP-A containing chromatin / Replacement of protamines by nucleosomes in the male pronucleus / CENP-A containing nucleosome / Packaging Of Telomere Ends / Amplification of signal from unattached kinetochores via a MAD2 inhibitory signal / Recognition and association of DNA glycosylase with site containing an affected purine / Cleavage of the damaged purine / Mitotic Prometaphase / EML4 and NUDC in mitotic spindle formation / Deposition of new CENPA-containing nucleosomes at the centromere / Recognition and association of DNA glycosylase with site containing an affected pyrimidine / Cleavage of the damaged pyrimidine / telomere organization / Inhibition of DNA recombination at telomere / RNA Polymerase I Promoter Opening / NRIF signals cell death from the nucleus / Meiotic synapsis / Resolution of Sister Chromatid Cohesion / Assembly of the ORC complex at the origin of replication / SUMOylation of chromatin organization proteins / Regulation of endogenous retroelements by the Human Silencing Hub (HUSH) complex / DNA methylation / Condensation of Prophase Chromosomes / Chromatin modifications during the maternal to zygotic transition (MZT) / positive regulation of protein ubiquitination / SIRT1 negatively regulates rRNA expression / HCMV Late Events / positive regulation of epithelial cell proliferation / innate immune response in mucosa / ERCC6 (CSB) and EHMT2 (G9a) positively regulate rRNA expression / mitotic spindle organization / PRC2 methylates histones and DNA / Regulation of endogenous retroelements by KRAB-ZFP proteins / Defective pyroptosis / chromosome segregation / HDACs deacetylate histones / Fanconi Anemia Pathway / Regulation of endogenous retroelements by Piwi-interacting RNAs (piRNAs) / Nonhomologous End-Joining (NHEJ) / RNA Polymerase I Promoter Escape / RHO GTPases Activate Formins / Transcriptional regulation by small RNAs / Formation of the beta-catenin:TCF transactivating complex / Activated PKN1 stimulates transcription of AR (androgen receptor) regulated genes KLK2 and KLK3 / RUNX1 regulates genes involved in megakaryocyte differentiation and platelet function / HDMs demethylate histones / G2/M DNA damage checkpoint / PKR-mediated signaling / NoRC negatively regulates rRNA expression / kinetochore / DNA Damage/Telomere Stress Induced Senescence / B-WICH complex positively regulates rRNA expression / PKMTs methylate histone lysines / Meiotic recombination / Pre-NOTCH Transcription and Translation / centriolar satellite / Metalloprotease DUBs / RMTs methylate histone arginines / Activation of anterior HOX genes in hindbrain development during early embryogenesis / nuclear matrix / Transcriptional regulation of granulopoiesis / HCMV Early Events / antimicrobial humoral immune response mediated by antimicrobial peptide / Separation of Sister Chromatids / structural constituent of chromatin / UCH proteinases / antibacterial humoral response / nucleosome / heterochromatin formation / mitotic cell cycle / nucleosome assembly Similarity search - Function | ||||||||||||
| Biological species | Homo sapiens (human) | ||||||||||||
| Method | single particle reconstruction / cryo EM / Resolution: 12.0 Å | ||||||||||||
Authors | Yatskevich S / Muir KW / Bellini D / Zhang Z / Yang J / Tischer T / Predin M / Dendooven T / McLaughlin SH / Barford D | ||||||||||||
| Funding support | United Kingdom, Germany, 3 items
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Citation | Journal: Science / Year: 2022Title: 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 |
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Structure visualization
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Downloads & links
-EMDB archive
| Map data | emd_14351.map.gz | 11.8 MB | EMDB map data format | |
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| Header (meta data) | emd-14351-v30.xml emd-14351.xml | 37.1 KB 37.1 KB | Display Display | EMDB header |
| FSC (resolution estimation) | emd_14351_fsc.xml | 6.2 KB | Display | FSC data file |
| Images | emd_14351.png | 39.3 KB | ||
| Filedesc metadata | emd-14351.cif.gz | 10.2 KB | ||
| Archive directory | http://ftp.pdbj.org/pub/emdb/structures/EMD-14351 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-14351 | HTTPS FTP |
-Validation report
| Summary document | emd_14351_validation.pdf.gz | 439.3 KB | Display | EMDB validaton report |
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| Full document | emd_14351_full_validation.pdf.gz | 438.8 KB | Display | |
| Data in XML | emd_14351_validation.xml.gz | 9.3 KB | Display | |
| Data in CIF | emd_14351_validation.cif.gz | 11.8 KB | Display | |
| Arichive directory | https://ftp.pdbj.org/pub/emdb/validation_reports/EMD-14351 ftp://ftp.pdbj.org/pub/emdb/validation_reports/EMD-14351 | HTTPS FTP |
-Related structure data
| Related structure data | ![]() 7ywxMC ![]() 7pb4C ![]() 7pb8C ![]() 7piiC ![]() 7pknC ![]() 7r5rC ![]() 7r5sC ![]() 7r5vC ![]() 7yyhC M: atomic model generated by this map C: citing same article ( |
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| Similar structure data | Similarity search - Function & homology F&H Search |
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Links
| EMDB pages | EMDB (EBI/PDBe) / EMDataResource |
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| Related items in Molecule of the Month |
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Map
| File | Download / File: emd_14351.map.gz / Format: CCP4 / Size: 18.7 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||
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| Annotation | Local resolution filtered cryosparc homogeneous refinement map | ||||||||||||||||||||||||||||||||||||
| Projections & slices | Image control
Images are generated by Spider. | ||||||||||||||||||||||||||||||||||||
| Voxel size | X=Y=Z: 1.72 Å | ||||||||||||||||||||||||||||||||||||
| Density |
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| Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||
| Details | EMDB XML:
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-Supplemental data
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Sample components
+Entire : CCAN-CENP-A inner centromere complex
+Supramolecule #1: CCAN-CENP-A inner centromere complex
+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 Q
+Macromolecule #9: Centromere protein U
+Macromolecule #10: Centromere protein P
+Macromolecule #11: Centromere protein R
+Macromolecule #12: Centromere protein T
+Macromolecule #13: Centromere protein W
+Macromolecule #14: Centromere protein S
+Macromolecule #15: Centromere protein X
+Macromolecule #18: Histone H3-like centromeric protein A
+Macromolecule #19: Histone H4
+Macromolecule #20: Histone H2A type 1-C
+Macromolecule #21: Histone H2B type 1-C/E/F/G/I
+Macromolecule #22: Centromere protein C
+Macromolecule #16: DNA (171-MER)
+Macromolecule #17: DNA (171-MER)
-Experimental details
-Structure determination
| Method | cryo EM |
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Processing | single particle reconstruction |
| Aggregation state | particle |
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Sample preparation
| Buffer | pH: 7.8 |
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| Vitrification | Cryogen name: ETHANE |
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Electron microscopy
| Microscope | FEI TITAN KRIOS |
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| Image recording | Film or detector model: GATAN K3 (6k x 4k) / Average electron dose: 40.0 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: 2.6 µm / Nominal defocus min: 1.2 µm |
| Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
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About Yorodumi




Keywords
Homo sapiens (human)
Authors
United Kingdom,
Germany, 3 items
Citation




























Z (Sec.)
Y (Row.)
X (Col.)




















Trichoplusia ni (cabbage looper)
Processing
FIELD EMISSION GUN

