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- PDB-7u47: CryoEM structure of CENP-N promoted nucleosome stacks with CENP-A... -

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Basic information

Entry
Database: PDB / ID: 7u47
TitleCryoEM structure of CENP-N promoted nucleosome stacks with CENP-A and palindromic alpha satellite DNA sequence
Components
  • (DNA (147-MER)) x 2
  • Centromere protein N
  • Histone H2A
  • Histone H2B type 1-C/E/F/G/I
  • Histone H3-like centromeric protein A
  • Histone H4
KeywordsDNA BINDING PROTEIN/DNA / centromere / kinetochore / DNA BINDING PROTEIN-DNA complex
Function / homology
Function and homology information


inner kinetochore / CENP-A containing chromatin assembly / protein localization to chromosome, centromeric region / 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 ...inner kinetochore / CENP-A containing chromatin assembly / protein localization to chromosome, centromeric region / 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 / 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 / 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 / antibacterial humoral response / Senescence-Associated Secretory Phenotype (SASP) / Oxidative Stress Induced Senescence / Estrogen-dependent gene expression / chromosome, telomeric region / Ub-specific processing proteases / defense response to Gram-positive bacterium / Amyloid fiber formation / protein heterodimerization activity / 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 / nucleus / cytosol
Similarity search - Function
Centromere protein Chl4/mis15/CENP-N / Kinetochore protein CHL4 like / 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 ...Centromere protein Chl4/mis15/CENP-N / Kinetochore protein CHL4 like / 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 / 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 / Histone H2A type 1-C / Centromere protein N
Similarity search - Component
Biological speciesHomo sapiens (human)
Escherichia coli (E. coli)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 7.5 Å
AuthorsZhou, K. / Luger, K.
Funding support United States, 1items
OrganizationGrant numberCountry
Howard Hughes Medical Institute (HHMI) United States
CitationJournal: Nat Struct Mol Biol / Year: 2022
Title: CENP-N promotes the compaction of centromeric chromatin.
Authors: Keda Zhou / Magdalena Gebala / Dustin Woods / Kousik Sundararajan / Garrett Edwards / Dan Krzizike / Jeff Wereszczynski / Aaron F Straight / Karolin Luger /
Abstract: The histone variant CENP-A is the epigenetic determinant for the centromere, where it is interspersed with canonical H3 to form a specialized chromatin structure that nucleates the kinetochore. How ...The histone variant CENP-A is the epigenetic determinant for the centromere, where it is interspersed with canonical H3 to form a specialized chromatin structure that nucleates the kinetochore. How nucleosomes at the centromere arrange into higher order structures is unknown. Here we demonstrate that the human CENP-A-interacting protein CENP-N promotes the stacking of CENP-A-containing mononucleosomes and nucleosomal arrays through a previously undefined interaction between the α6 helix of CENP-N with the DNA of a neighboring nucleosome. We describe the cryo-EM structures and biophysical characterization of such CENP-N-mediated nucleosome stacks and nucleosomal arrays and demonstrate that this interaction is responsible for the formation of densely packed chromatin at the centromere in the cell. Our results provide first evidence that CENP-A, together with CENP-N, promotes specific chromatin higher order structure at the centromere.
History
DepositionFeb 28, 2022Deposition site: RCSB / Processing site: RCSB
Revision 1.0Mar 16, 2022Provider: repository / Type: Initial release
Revision 1.1Apr 20, 2022Group: Database references / Category: citation
Item: _citation.country / _citation.journal_abbrev ..._citation.country / _citation.journal_abbrev / _citation.journal_id_CSD / _citation.journal_id_ISSN / _citation.pdbx_database_id_DOI / _citation.year
Revision 1.2May 4, 2022Group: Database references / Category: citation / citation_author
Item: _citation.journal_volume / _citation.page_first ..._citation.journal_volume / _citation.page_first / _citation.page_last / _citation.pdbx_database_id_PubMed / _citation.title / _citation_author.name
Revision 1.3Feb 21, 2024Group: Data collection / Category: chem_comp_atom / chem_comp_bond

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Structure visualization

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Assembly

Deposited unit
A: Histone H3-like centromeric protein A
B: Histone H4
C: Histone H2A
D: Histone H2B type 1-C/E/F/G/I
E: Histone H3-like centromeric protein A
F: Histone H4
G: Histone H2A
H: Histone H2B type 1-C/E/F/G/I
I: DNA (147-MER)
J: DNA (147-MER)
K: Centromere protein N
L: Histone H3-like centromeric protein A
M: Histone H4
N: Histone H2A
O: Histone H2B type 1-C/E/F/G/I
P: Histone H3-like centromeric protein A
Q: Histone H4
R: Histone H2A
S: Histone H2B type 1-C/E/F/G/I
T: DNA (147-MER)
U: DNA (147-MER)
V: Centromere protein N


Theoretical massNumber of molelcules
Total (without water)473,15922
Polymers473,15922
Non-polymers00
Water0
1


  • Idetical with deposited unit
  • defined by author
  • Evidence: assay for oligomerization, Analytical Ultracentrifugation
TypeNameSymmetry operationNumber
identity operation1_5551

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Components

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Protein , 5 types, 18 molecules AELPBFMQCGNRDHOSKV

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


Mass: 16023.630 Da / Num. of mol.: 4
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.: 4
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 / / Histone H2A/l


Mass: 14135.523 Da / Num. of mol.: 4
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: HIST1H2AC, H2AFL / 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.: 4
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human)
Gene: H2BC4, H2BFL, HIST1H2BC, H2BC6, H2BFH, HIST1H2BE, H2BC7, H2BFG, HIST1H2BF, H2BC8, H2BFA, HIST1H2BG, H2BC10, H2BFK, HIST1H2BI
Production host: Escherichia coli (E. coli) / References: UniProt: P62807
#7: Protein Centromere protein N / / CENP-N / Interphase centromere complex protein 32


Mass: 34870.695 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: CENPN, C16orf60, ICEN32, BM-309 / Production host: Escherichia coli (E. coli) / References: UniProt: Q96H22

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DNA chain , 2 types, 4 molecules ITJU

#5: DNA chain DNA (147-MER)


Mass: 45368.051 Da / Num. of mol.: 2 / Source method: obtained synthetically / Source: (synth.) Escherichia coli (E. coli)
#6: DNA chain DNA (147-MER)


Mass: 45359.035 Da / Num. of mol.: 2 / Source method: obtained synthetically / Source: (synth.) Escherichia coli (E. coli)

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Experimental details

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Experiment

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

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Sample preparation

ComponentName: cryoEM structure of centromeric nucleosome in complex with kinetochore protein CENP-N
Type: COMPLEX / Entity ID: all / Source: MULTIPLE SOURCES
Source (natural)Organism: Homo sapiens (human)
Source (recombinant)Organism: Escherichia coli (E. coli)
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 / Nominal defocus max: 2000 nm / Nominal defocus min: 800 nm
Image recordingElectron dose: 70 e/Å2 / Film or detector model: GATAN K3 (6k x 4k)

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Processing

CTF correctionType: NONE
3D reconstructionResolution: 7.5 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 88530 / Symmetry type: POINT
RefinementHighest resolution: 7.5 Å

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