6PTN

Structure of Ctf4 trimer in complex with two CMG helicases

Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 5.80 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation   3D Report Full Report


This is version 1.1 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: 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 ...

    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
MoleculeChainsSequence LengthOrganismDetailsImage
DNA polymerase alpha-binding proteinA [auth E],
B [auth F],
C [auth G]		927Saccharomyces cerevisiaeMutation(s): 0 
Gene Names: CTF4, CHL15, POB1, YPR135W, P9659.7
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
DNA replication complex GINS protein PSF1O [auth A],
D [auth a]		208Saccharomyces cerevisiaeMutation(s): 0 
Gene Names: PSF1, YDR013W, PZA208, YD8119.18
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
DNA replication complex GINS protein PSF2P [auth B],
E [auth b]		213Saccharomyces cerevisiaeMutation(s): 0 
Gene Names: PSF2, YJL072C, HRF213, J1086
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Entity ID: 4
MoleculeChainsSequence LengthOrganismDetailsImage
DNA replication complex GINS protein PSF3Q [auth C],
F [auth c]		194Saccharomyces cerevisiaeMutation(s): 0 
Gene Names: PSF3, YOL146W
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Entity ID: 5
MoleculeChainsSequence LengthOrganismDetailsImage
DNA replication complex GINS protein SLD5R [auth D],
G [auth d]		294Saccharomyces cerevisiaeMutation(s): 0 
Gene Names: SLD5, YDR489W
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Entity ID: 6
MoleculeChainsSequence LengthOrganismDetailsImage
Cell division control protein 45S [auth H],
H [auth h]		650Saccharomyces cerevisiaeMutation(s): 0 
Gene Names: CDC45, SLD4, YLR103C, L8004.11
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Entity ID: 7
MoleculeChainsSequence LengthOrganismDetailsImage
DNA replication licensing factor MCM2T [auth 2],
I [auth i]		868Saccharomyces cerevisiaeMutation(s): 0 
Gene Names: MCM2, YBL023C, YBL0438
EC: 3.6.4.12
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Entity ID: 8
MoleculeChainsSequence LengthOrganismDetailsImage
DNA replication licensing factor MCM3U [auth 3],
J [auth j]		971Saccharomyces cerevisiaeMutation(s): 0 
Gene Names: MCM3, YEL032W, SYGP-ORF23
EC: 3.6.4.12
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Entity ID: 9
MoleculeChainsSequence LengthOrganismDetailsImage
DNA replication licensing factor MCM4V [auth 4],
K [auth k]		933Saccharomyces cerevisiaeMutation(s): 0 
Gene Names: MCM4, CDC54, HCD21, YPR019W, YP9531.13
EC: 3.6.4.12
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Entity ID: 10
MoleculeChainsSequence LengthOrganismDetailsImage
Minichromosome maintenance protein 5W [auth 5],
L [auth l]		775Saccharomyces cerevisiaeMutation(s): 0 
Gene Names: MCM5, CDC46, YLR274W, L9328.1
EC: 3.6.4.12
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Entity ID: 11
MoleculeChainsSequence LengthOrganismDetailsImage
DNA replication licensing factor MCM6X [auth 6],
M [auth m]		1017Saccharomyces cerevisiaeMutation(s): 0 
Gene Names: MCM6, YGL201C
EC: 3.6.4.12
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Entity ID: 12
MoleculeChainsSequence LengthOrganismDetailsImage
DNA replication licensing factor MCM7Y [auth 7],
N [auth n]		845Saccharomyces cerevisiaeMutation(s): 0 
Gene Names: MCM7, CDC47, YBR202W, YBR1441
EC: 3.6.4.12
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Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ATP (Subject of Investigation/LOI)
Query on ATP
Download Ideal Coordinates CCD File 
AA [auth j],
BA [auth l],
CA [auth 2],
DA [auth 3],
EA [auth 5],
AA [auth j],
BA [auth l],
CA [auth 2],
DA [auth 3],
EA [auth 5],
Z [auth i]
ADENOSINE-5'-TRIPHOSPHATE
C10 H16 N5 O13 P3
ZKHQWZAMYRWXGA-KQYNXXCUSA-N		 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 5.80 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

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View more in-depth experimental data

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