6PTO

Structure of Ctf4 trimer in complex with three CMG helicases


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 7.00 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Ctf4 organizes sister replisomes and Pol alpha into a replication factory.

Yuan, Z.Georgescu, R.Santos, R.L.A.Zhang, D.Bai, L.Yao, N.Y.Zhao, G.O'Donnell, M.E.Li, H.

(2019) Elife 8

  • DOI: https://doi.org/10.7554/eLife.47405
  • Primary Citation of Related Structures:  
    6PTJ, 6PTN, 6PTO

  • PubMed Abstract: 

    The current view is that eukaryotic replisomes are independent. Here we show that Ctf4 tightly dimerizes CMG helicase, with an extensive interface involving Psf2, Cdc45, and Sld5. Interestingly, Ctf4 binds only one Pol α-primase. Thus, Ctf4 may have evolved as a trimer to organize two helicases and one Pol α-primase into a replication factory. In the 2CMG-Ctf4 3 -1Pol α-primase factory model, the two CMGs nearly face each other, placing the two lagging strands toward the center and two leading strands out the sides. The single Pol α-primase is centrally located and may prime both sister replisomes. The Ctf4-coupled-sister replisome model is consistent with cellular microscopy studies revealing two sister forks of an origin remain attached and are pushed forward from a protein platform. The replication factory model may facilitate parental nucleosome transfer during replication.


  • Organizational Affiliation

    Structural Biology Program, Van Andel Institute, Grand Rapids, United States.


Macromolecules
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Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
DNA polymerase alpha-binding proteinA [auth X],
B [auth Y],
C [auth Z]
927Saccharomyces cerevisiaeMutation(s): 0 
Gene Names: CTF4CHL15POB1YPR135WP9659.7
UniProt
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UniProt GroupQ01454
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Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
DNA replication complex GINS protein PSF1D [auth n],
O [auth A],
Z [auth a]
208Saccharomyces cerevisiaeMutation(s): 0 
Gene Names: PSF1YDR013WPZA208YD8119.18
UniProt
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Entity ID: 3
MoleculeChains Sequence LengthOrganismDetailsImage
DNA replication complex GINS protein PSF2AA [auth b],
E [auth o],
P [auth B]
213Saccharomyces cerevisiaeMutation(s): 0 
Gene Names: PSF2YJL072CHRF213J1086
UniProt
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Entity ID: 4
MoleculeChains Sequence LengthOrganismDetailsImage
DNA replication complex GINS protein PSF3BA [auth c],
F [auth p],
Q [auth C]
194Saccharomyces cerevisiaeMutation(s): 0 
Gene Names: PSF3YOL146W
UniProt
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Entity ID: 5
MoleculeChains Sequence LengthOrganismDetailsImage
DNA replication complex GINS protein SLD5CA [auth d],
G [auth q],
R [auth D]
294Saccharomyces cerevisiaeMutation(s): 0 
Gene Names: SLD5YDR489W
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Entity ID: 6
MoleculeChains Sequence LengthOrganismDetailsImage
Cell division control protein 45DA [auth r],
H [auth e],
S [auth E]
650Saccharomyces cerevisiaeMutation(s): 0 
Gene Names: CDC45SLD4YLR103CL8004.11
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Entity ID: 7
MoleculeChains Sequence LengthOrganismDetailsImage
DNA replication licensing factor MCM2EA [auth F],
I [auth h],
T [auth 2]
868Saccharomyces cerevisiaeMutation(s): 0 
Gene Names: MCM2YBL023CYBL0438
EC: 3.6.4.12
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Entity ID: 8
MoleculeChains Sequence LengthOrganismDetailsImage
DNA replication licensing factor MCM3FA [auth G],
J [auth i],
U [auth 3]
971Saccharomyces cerevisiaeMutation(s): 0 
Gene Names: MCM3YEL032WSYGP-ORF23
EC: 3.6.4.12
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Entity ID: 9
MoleculeChains Sequence LengthOrganismDetailsImage
DNA replication licensing factor MCM4GA [auth H],
K [auth j],
V [auth 4]
933Saccharomyces cerevisiaeMutation(s): 0 
Gene Names: MCM4CDC54HCD21YPR019WYP9531.13
EC: 3.6.4.12
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Entity ID: 10
MoleculeChains Sequence LengthOrganismDetailsImage
Minichromosome maintenance protein 5HA [auth I],
L [auth k],
W [auth 5]
775Saccharomyces cerevisiaeMutation(s): 0 
Gene Names: MCM5CDC46YLR274WL9328.1
EC: 3.6.4.12
UniProt
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Entity ID: 11
MoleculeChains Sequence LengthOrganismDetailsImage
DNA replication licensing factor MCM6IA [auth J],
M [auth l],
X [auth 6]
1,017Saccharomyces cerevisiaeMutation(s): 0 
Gene Names: MCM6YGL201C
EC: 3.6.4.12
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Entity ID: 12
MoleculeChains Sequence LengthOrganismDetailsImage
DNA replication licensing factor MCM7JA [auth K],
N [auth m],
Y [auth 7]
845Saccharomyces cerevisiaeMutation(s): 0 
Gene Names: MCM7CDC47YBR202WYBR1441
EC: 3.6.4.12
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Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 7.00 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Human Genome Research Institute (NIH/NHGRI)United StatesGM111472
National Institutes of Health/National Human Genome Research Institute (NIH/NHGRI)United StatesOD12272
National Institutes of Health/National Human Genome Research Institute (NIH/NHGRI)United StatesGM45436

Revision History  (Full details and data files)

  • Version 1.0: 2019-11-20
    Type: Initial release
  • Version 1.1: 2019-12-18
    Changes: Author supporting evidence
  • Version 1.2: 2024-10-16
    Changes: Data collection, Database references, Structure summary