2WVR

Human Cdt1:Geminin complex


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.30 Å
  • R-Value Free: 0.301 
  • R-Value Work: 0.240 
  • R-Value Observed: 0.243 

wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

Quaternary Structure of the Human Cdt1-Geminin Complex Regulates DNA Replication Licensing.

De Marco, V.Gillespie, P.J.Li, A.Karantzelis, N.Christodoulou, E.Klompmaker, R.Van Gerwen, S.Fish, A.Petoukhov, M.V.Iliou, M.S.Lygerou, Z.Medema, R.H.Blow, J.J.Svergun, D.I.Taraviras, S.Perrakis, A.

(2009) Proc Natl Acad Sci U S A 106: 19807

  • DOI: https://doi.org/10.1073/pnas.0905281106
  • Primary Citation of Related Structures:  
    2WVR

  • PubMed Abstract: 

    All organisms need to ensure that no DNA segments are rereplicated in a single cell cycle. Eukaryotes achieve this through a process called origin licensing, which involves tight spatiotemporal control of the assembly of prereplicative complexes (pre-RCs) onto chromatin. Cdt1 is a key component and crucial regulator of pre-RC assembly. In higher eukaryotes, timely inhibition of Cdt1 by Geminin is essential to prevent DNA rereplication. Here, we address the mechanism of DNA licensing inhibition by Geminin, by combining X-ray crystallography, small-angle X-ray scattering, and functional studies in Xenopus and mammalian cells. Our findings show that the Cdt1:Geminin complex can exist in two distinct forms, a "permissive" heterotrimer and an "inhibitory" heterohexamer. Specific Cdt1 residues, buried in the heterohexamer, are important for licensing. We postulate that the transition between the heterotrimer and the heterohexamer represents a molecular switch between licensing-competent and licensing-defective states.


  • Organizational Affiliation

    Department of Biochemistry, Netherlands Cancer Institute, Plesmanlaan 121, 1066CX Amsterdam, The Netherlands.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
GEMININ
A, B
209Homo sapiensMutation(s): 0 
UniProt & NIH Common Fund Data Resources
Find proteins for O75496 (Homo sapiens)
Explore O75496 
Go to UniProtKB:  O75496
PHAROS:  O75496
GTEx:  ENSG00000112312 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupO75496
Sequence Annotations
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
DNA REPLICATION FACTOR CDT1546Homo sapiensMutation(s): 0 
UniProt & NIH Common Fund Data Resources
Find proteins for Q9H211 (Homo sapiens)
Explore Q9H211 
Go to UniProtKB:  Q9H211
PHAROS:  Q9H211
GTEx:  ENSG00000167513 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ9H211
Sequence Annotations
Expand
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.30 Å
  • R-Value Free: 0.301 
  • R-Value Work: 0.240 
  • R-Value Observed: 0.243 
  • Space Group: P 43 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 92.804α = 90
b = 92.804β = 90
c = 164.842γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
MOSFLMdata reduction
SCALAdata scaling
SHARPphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2009-10-27
    Type: Initial release
  • Version 1.1: 2011-07-07
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2024-05-08
    Changes: Data collection, Database references, Other