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- PDB-7pii: Structure of the human CCAN CENP-A alpha-satellite complex -

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Basic information

Entry
Database: PDB / ID: 7pii
TitleStructure of the human CCAN CENP-A alpha-satellite complex
Components
  • Centromere protein C
  • DNA (122-MER)
  • DNA (123-MER)
  • Histone H2A type 1-C
  • Histone H2B type 1-C/E/F/G/I
  • Histone H3-like centromeric protein A
  • Histone H4
KeywordsCELL CYCLE / Kinetochore / chromosome segregation / centromere
Function / homology
Function and homology information


spindle attachment to meiosis I kinetochore / inner kinetochore / centromeric DNA binding / CENP-A containing chromatin assembly / protein localization to chromosome, centromeric region / attachment of mitotic spindle microtubules to kinetochore / kinetochore assembly / condensed chromosome, centromeric region / establishment of mitotic spindle orientation / mitotic cytokinesis ...spindle attachment to meiosis I kinetochore / inner kinetochore / centromeric DNA binding / CENP-A containing chromatin assembly / protein localization to chromosome, centromeric region / attachment of mitotic spindle microtubules to kinetochore / kinetochore assembly / condensed chromosome, centromeric region / establishment of mitotic spindle orientation / mitotic cytokinesis / chromosome, centromeric region / negative regulation of megakaryocyte differentiation / protein localization to CENP-A containing chromatin / Amplification of signal from unattached kinetochores via a MAD2 inhibitory signal / pericentric heterochromatin / Replacement of protamines by nucleosomes in the male pronucleus / CENP-A containing nucleosome / Packaging Of Telomere Ends / Mitotic Prometaphase / EML4 and NUDC in mitotic spindle formation / Recognition and association of DNA glycosylase with site containing an affected purine / Cleavage of the damaged purine / Deposition of new CENPA-containing nucleosomes at the centromere / Resolution of Sister Chromatid Cohesion / Recognition and association of DNA glycosylase with site containing an affected pyrimidine / Cleavage of the damaged pyrimidine / Inhibition of DNA recombination at telomere / Meiotic synapsis / telomere organization / RNA Polymerase I Promoter Opening / SUMOylation of chromatin organization proteins / Assembly of the ORC complex at the origin of replication / DNA methylation / Condensation of Prophase Chromosomes / HCMV Late Events / Chromatin modifications during the maternal to zygotic transition (MZT) / ERCC6 (CSB) and EHMT2 (G9a) positively regulate rRNA expression / SIRT1 negatively regulates rRNA expression / innate immune response in mucosa / PRC2 methylates histones and DNA / Defective pyroptosis / chromosome segregation / RHO GTPases Activate Formins / HDACs deacetylate histones / RNA Polymerase I Promoter Escape / Nonhomologous End-Joining (NHEJ) / Transcriptional regulation by small RNAs / Formation of the beta-catenin:TCF transactivating complex / RUNX1 regulates genes involved in megakaryocyte differentiation and platelet function / Activated PKN1 stimulates transcription of AR (androgen receptor) regulated genes KLK2 and KLK3 / NoRC negatively regulates rRNA expression / G2/M DNA damage checkpoint / B-WICH complex positively regulates rRNA expression / HDMs demethylate histones / DNA Damage/Telomere Stress Induced Senescence / Metalloprotease DUBs / kinetochore / PKMTs methylate histone lysines / RMTs methylate histone arginines / Meiotic recombination / Pre-NOTCH Transcription and Translation / nucleosome assembly / Activation of anterior HOX genes in hindbrain development during early embryogenesis / HCMV Early Events / Transcriptional regulation of granulopoiesis / structural constituent of chromatin / Separation of Sister Chromatids / UCH proteinases / nucleosome / antimicrobial humoral immune response mediated by antimicrobial peptide / E3 ubiquitin ligases ubiquitinate target proteins / mitotic cell cycle / Recruitment and ATM-mediated phosphorylation of repair and signaling proteins at DNA double strand breaks / RUNX1 regulates transcription of genes involved in differentiation of HSCs / chromatin organization / Processing of DNA double-strand break ends / HATs acetylate histones / midbody / antibacterial humoral response / Senescence-Associated Secretory Phenotype (SASP) / Oxidative Stress Induced Senescence / Estrogen-dependent gene expression / chromosome, telomeric region / nuclear body / Ub-specific processing proteases / defense response to Gram-positive bacterium / Amyloid fiber formation / protein heterodimerization activity / cell division / negative regulation of cell population proliferation / chromatin binding / protein-containing complex / DNA binding / extracellular space / RNA binding / extracellular exosome / extracellular region / nucleoplasm / membrane / identical protein binding
Similarity search - Function
CENP-C, middle DNMT3B-binding domain / Centromere assembly component CENP-C middle DNMT3B-binding region / Kinetochore assembly subunit CENP-C, N-terminal domain / Kinetochore assembly subunit CENP-C N-terminal / Mif2/CENP-C cupin domain / Centromere protein C/Mif2/cnp3 / Mif2/CENP-C like / RmlC-like cupin domain superfamily / Histone H2B signature. / Histone H2B ...CENP-C, middle DNMT3B-binding domain / Centromere assembly component CENP-C middle DNMT3B-binding region / Kinetochore assembly subunit CENP-C, N-terminal domain / Kinetochore assembly subunit CENP-C N-terminal / Mif2/CENP-C cupin domain / Centromere protein C/Mif2/cnp3 / Mif2/CENP-C like / RmlC-like cupin domain superfamily / Histone H2B signature. / Histone H2B / Histone H2B / Histone H2A conserved site / Histone H2A signature. / Histone H2A, C-terminal domain / C-terminus of histone H2A / Histone H2A / Histone 2A / Histone H4, conserved site / Histone H4 signature. / Histone H4 / Histone H4 / RmlC-like jelly roll fold / CENP-T/Histone H4, histone fold / Centromere kinetochore component CENP-T histone fold / TATA box binding protein associated factor / TATA box binding protein associated factor (TAF), histone-like fold domain / Histone H3 signature 2. / Histone H3 / Histone H3/CENP-A / Histone H2A/H2B/H3 / Core histone H2A/H2B/H3/H4 / Histone-fold
Similarity search - Domain/homology
DNA / DNA (> 10) / DNA (> 100) / Histone H3-like centromeric protein A / Histone H4 / Histone H2B type 1-C/E/F/G/I / Centromere protein C / Histone H2A type 1-C
Similarity search - Component
Biological speciesHomo sapiens (human)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 2.68 Å
AuthorsYatskevich, S. / Muir, K.W. / Bellini, D. / Barford, D.
Funding support Germany, 3items
OrganizationGrant numberCountry
Cancer Research UK Germany
Medical Research Council (MRC, United Kingdom) Germany
Boehringer Ingelheim Fonds (BIF) Germany
CitationJournal: 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
DepositionAug 19, 2021Deposition site: PDBE / Processing site: PDBE
Revision 1.0May 25, 2022Provider: repository / Type: Initial release
Revision 1.1Jun 1, 2022Group: Database references / Category: citation / citation_author
Item: _citation.journal_volume / _citation.page_first ..._citation.journal_volume / _citation.page_first / _citation.page_last / _citation_author.identifier_ORCID

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: Histone H3-like centromeric protein A
B: Histone H4
C: Histone H2A type 1-C
D: Histone H2B type 1-C/E/F/G/I
E: Histone H3-like centromeric protein A
F: Histone H4
G: Histone H2A type 1-C
H: Histone H2B type 1-C/E/F/G/I
I: DNA (122-MER)
J: DNA (123-MER)
K: Centromere protein C
L: Centromere protein C


Theoretical massNumber of molelcules
Total (without water)345,47812
Polymers345,47812
Non-polymers00
Water0
1


  • Idetical with deposited unit
  • defined by author&software
  • Evidence: gel filtration
TypeNameSymmetry operationNumber
identity operation1_5551
Buried area51800 Å2
ΔGint-364 kcal/mol
Surface area67030 Å2
MethodPISA

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Components

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Protein , 5 types, 10 molecules AEBFCGDHKL

#1: Protein Histone H3-like centromeric protein A / Centromere autoantigen A / Centromere protein A / CENP-A


Mass: 16023.630 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: CENPA / Production host: Escherichia coli (E. coli) / References: UniProt: P49450
#2: Protein Histone H4 /


Mass: 11394.426 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human)
Gene: HIST1H4A, H4/A, H4FA, HIST1H4B, H4/I, H4FI, HIST1H4C, H4/G, H4FG, HIST1H4D, H4/B, H4FB, HIST1H4E, H4/J, H4FJ, HIST1H4F, H4/C, H4FC, HIST1H4H, H4/H, H4FH, HIST1H4I, H4/M, H4FM, HIST1H4J, H4/E, ...Gene: HIST1H4A, H4/A, H4FA, HIST1H4B, H4/I, H4FI, HIST1H4C, H4/G, H4FG, HIST1H4D, H4/B, H4FB, HIST1H4E, H4/J, H4FJ, HIST1H4F, H4/C, H4FC, HIST1H4H, H4/H, H4FH, HIST1H4I, H4/M, H4FM, HIST1H4J, H4/E, H4FE, HIST1H4K, H4/D, H4FD, HIST1H4L, H4/K, H4FK, HIST2H4A, H4/N, H4F2, H4FN, HIST2H4, HIST2H4B, H4/O, H4FO, HIST4H4
Production host: Escherichia coli (E. coli) / References: UniProt: P62805
#3: Protein Histone H2A type 1-C / H2A-clustered histone 6 / Histone H2A/l


Mass: 16666.334 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: H2AC6, H2AFL, HIST1H2AC / Production host: Escherichia coli (E. coli) / References: UniProt: Q93077
#4: Protein Histone H2B type 1-C/E/F/G/I / Histone H2B.1 A / Histone H2B.a / H2B/a / Histone H2B.g / H2B/g / Histone H2B.h / H2B/h / Histone ...Histone H2B.1 A / Histone H2B.a / H2B/a / Histone H2B.g / H2B/g / Histone H2B.h / H2B/h / Histone H2B.k / H2B/k / Histone H2B.l / H2B/l


Mass: 13937.213 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human)
Gene: HIST1H2BC, H2BFL, HIST1H2BE, H2BFH, HIST1H2BF, H2BFG, HIST1H2BG, H2BFA, HIST1H2BI, H2BFK
Production host: Escherichia coli (E. coli) / References: UniProt: P62807
#7: Protein Centromere protein C / / CENP-C / Centromere autoantigen C / Centromere protein C 1 / CENP-C 1 / Interphase centromere ...CENP-C / Centromere autoantigen C / Centromere protein C 1 / CENP-C 1 / Interphase centromere complex protein 7


Mass: 61943.082 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: CENPC, CENPC1, ICEN7 / Production host: Escherichia coli (E. coli) / References: UniProt: Q03188

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DNA chain , 2 types, 2 molecules IJ

#5: DNA chain DNA (122-MER)


Mass: 52747.801 Da / Num. of mol.: 1 / Source method: obtained synthetically / Source: (synth.) Homo sapiens (human)
#6: DNA chain DNA (123-MER)


Mass: 52800.816 Da / Num. of mol.: 1 / Source method: obtained synthetically / Source: (synth.) Homo sapiens (human)

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Experimental details

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Experiment

ExperimentMethod: ELECTRON MICROSCOPY
EM experimentAggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction

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Sample preparation

ComponentName: CENP-A nucleosome in complex with CENP-C / Type: COMPLEX / Entity ID: all / Source: MULTIPLE SOURCES
Buffer solutionpH: 7.8
SpecimenEmbedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
VitrificationCryogen name: ETHANE

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Electron microscopy imaging

Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company
MicroscopyModel: FEI TITAN KRIOS
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM
Electron lensMode: BRIGHT FIELDBright-field microscopy
Image recordingElectron dose: 50 e/Å2 / Film or detector model: GATAN K3 (6k x 4k)

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Processing

CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
3D reconstructionResolution: 2.68 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 1093274 / Symmetry type: POINT

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