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- PDB-6p7x: Structure of the K. lactis CBF3 core - Ndc10 D1D2 complex -

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Basic information

Entry
Database: PDB / ID: 6p7x
TitleStructure of the K. lactis CBF3 core - Ndc10 D1D2 complex
Components
  • Cep3
  • Ctf13
  • Ndc10
  • Skp1S-phase kinase-associated protein 1
KeywordsDNA BINDING PROTEIN / yeast centromere-binding complex
Function / homology
Function and homology information


ubiquitin-dependent protein catabolic process / protein ubiquitination / DNA-binding transcription factor activity, RNA polymerase II-specific / DNA binding / zinc ion binding / membrane
Similarity search - Function
Transcription activator GCR1-like domain / Ndc10, domain 2 / Ndc10, domain 2 superfamily / Transcriptional activator of glycolytic enzymes / Centromere DNA-binding protein complex CBF3 subunit, domain 2 / Centromere DNA-binding protein complex CBF3 subunit B, C-terminal / Centromere DNA-binding protein complex CBF3 subunit B / Fungal Zn(2)-Cys(6) binuclear cluster domain / Zn(2)-C6 fungal-type DNA-binding domain superfamily / Zn(2)-C6 fungal-type DNA-binding domain profile. ...Transcription activator GCR1-like domain / Ndc10, domain 2 / Ndc10, domain 2 superfamily / Transcriptional activator of glycolytic enzymes / Centromere DNA-binding protein complex CBF3 subunit, domain 2 / Centromere DNA-binding protein complex CBF3 subunit B, C-terminal / Centromere DNA-binding protein complex CBF3 subunit B / Fungal Zn(2)-Cys(6) binuclear cluster domain / Zn(2)-C6 fungal-type DNA-binding domain superfamily / Zn(2)-C6 fungal-type DNA-binding domain profile. / GAL4-like Zn(II)2Cys6 (or C6 zinc) binuclear cluster DNA-binding domain / Zn(2)-C6 fungal-type DNA-binding domain / SKP1 component, dimerisation / S-phase kinase-associated protein 1 / SKP1-like, dimerisation domain superfamily / Skp1 family, dimerisation domain / S-phase kinase-associated protein 1-like / SKP1 component, POZ domain / Skp1 family, tetramerisation domain / Found in Skp1 protein family / SKP1/BTB/POZ domain superfamily
Similarity search - Domain/homology
E3 ubiquitin ligase complex SCF subunit / KLLA0F13816p / KLLA0E03807p / KLLA0D09977p
Similarity search - Component
Biological speciesKluyveromyces lactis (yeast)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 4.3 Å
AuthorsLee, P.D. / Wei, H. / Tan, D. / Harrison, S.C.
Funding support United States, 2items
OrganizationGrant numberCountry
Howard Hughes Medical Institute (HHMI) United States
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS) United States
CitationJournal: J Mol Biol / Year: 2019
Title: Structure of the Centromere Binding Factor 3 Complex from Kluyveromyces lactis.
Authors: Phong D Lee / Hui Wei / Dongyan Tan / Stephen C Harrison /
Abstract: Kinetochores are the multiprotein complexes that link chromosomal centromeres to mitotic-spindle microtubules. Budding yeast centromeres comprise three sequential "centromere-determining elements", ...Kinetochores are the multiprotein complexes that link chromosomal centromeres to mitotic-spindle microtubules. Budding yeast centromeres comprise three sequential "centromere-determining elements", CDEI, II, and III. CDEI (8 bp) and CDEIII (∼25 bp) are conserved between Kluyveromyces lactis and Saccharomyces cerevisiae, but CDEII in the former is twice as long (160 bp) as CDEII in the latter (80 bp). The CBF3 complex recognizes CDEIII and is required for assembly of a centromeric nucleosome, which in turn recruits other kinetochore components. To understand differences in centromeric nucleosome assembly between K. lactis and S. cerevisiae, we determined the structure of a K. lactis CBF3 complex by electron cryomicroscopy at ∼4 Å resolution and compared it with published structures of S. cerevisiae CBF3. We show differences in the pose of Ndc10 and discuss potential models of the K. lactis centromeric nucleosome that account for the extended CDEII length.
History
DepositionJun 6, 2019Deposition site: RCSB / Processing site: RCSB
Revision 1.0Sep 18, 2019Provider: repository / Type: Initial release
Revision 1.1Nov 20, 2019Group: Author supporting evidence / Category: pdbx_audit_support
Item: _pdbx_audit_support.country / _pdbx_audit_support.funding_organization
Revision 1.2Dec 11, 2019Group: Database references / Category: citation
Item: _citation.journal_volume / _citation.page_first / _citation.page_last
Revision 1.3Mar 20, 2024Group: Data collection / Database references / Category: chem_comp_atom / chem_comp_bond / database_2
Item: _database_2.pdbx_DOI / _database_2.pdbx_database_accession

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Structure visualization

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Assembly

Deposited unit
E: Ndc10
C: Ctf13
D: Skp1
B: Cep3
A: Cep3


Theoretical massNumber of molelcules
Total (without water)262,6255
Polymers262,6255
Non-polymers00
Water0
1


  • Idetical with deposited unit
  • defined by author
  • Evidence: gel filtration
TypeNameSymmetry operationNumber
identity operation1_5551
Buried area9540 Å2
ΔGint-48 kcal/mol
Surface area87610 Å2

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Components

#1: Protein Ndc10 / KLLA0E03807p


Mass: 47053.719 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Kluyveromyces lactis (yeast) / Gene: KLLA0_E03807g / Production host: Escherichia coli (E. coli) / References: UniProt: Q6CPM4
#2: Protein Ctf13 / KLLA0F13816p


Mass: 46159.945 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Kluyveromyces lactis (yeast) / Gene: KLLA0_F13816g / Production host: Trichoplusia ni (cabbage looper) / References: UniProt: Q6CK37
#3: Protein Skp1 / S-phase kinase-associated protein 1 / Centromere-associated factor


Mass: 21081.141 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Kluyveromyces lactis (yeast) / Gene: SKP1 / Production host: Trichoplusia ni (cabbage looper) / References: UniProt: O94228
#4: Protein Cep3 / KLLA0D09977p


Mass: 74165.312 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Kluyveromyces lactis (yeast) / Gene: KLLA0_D09977g / Production host: Trichoplusia ni (cabbage looper) / References: UniProt: Q6CRD4

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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: K. lactis CBF3 core - Ndc10 D1D2 Complex / Type: COMPLEX / Entity ID: all / Source: RECOMBINANT
Molecular weightExperimental value: NO
Source (natural)Organism: Kluyveromyces lactis (yeast)
Source (recombinant)Organism: Trichoplusia ni (cabbage looper)
Buffer solutionpH: 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: 65 e/Å2 / Film or detector model: GATAN K2 SUMMIT (4k x 4k)

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Processing

CTF correctionType: NONE
SymmetryPoint symmetry: C1 (asymmetric)
3D reconstructionResolution: 4.3 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 63177 / Symmetry type: POINT

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