3A4C

Crystal structure of cdt1 C terminal domain


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.89 Å
  • R-Value Free: 0.236 
  • R-Value Work: 0.211 
  • R-Value Observed: 0.212 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Structure of the Cdt1 C-terminal domain: Conservation of the winged helix fold in replication licensing factors

Khayrutdinov, B.I.Bae, W.J.Yun, Y.M.Lee, J.H.Tsuyama, T.Kim, J.J.Hwang, E.Ryu, K.-S.Cheong, H.-K.Cheong, C.Ko, J.-S.Enomoto, T.Karplus, P.A.Guntert, P.Tada, S.Jeon, Y.H.Cho, Y.

(2009) Protein Sci 18: 2252-2264

  • DOI: 10.1002/pro.236
  • Structures With Same Primary Citation

  • PubMed Abstract: 
  • In eukaryotic replication licensing, Cdt1 plays a key role by recruiting the MCM2-7 complex onto the origin of chromosome. The C-terminal domain of mouse Cdt1 (mCdt1C), the most conserved region in Cdt1, is essential for licensing and directly intera ...

    In eukaryotic replication licensing, Cdt1 plays a key role by recruiting the MCM2-7 complex onto the origin of chromosome. The C-terminal domain of mouse Cdt1 (mCdt1C), the most conserved region in Cdt1, is essential for licensing and directly interacts with the MCM2-7 complex. We have determined the structures of mCdt1CS (mCdt1C_small; residues 452 to 557) and mCdt1CL (mCdt1C_large; residues 420 to 557) using X-ray crystallography and solution NMR spectroscopy, respectively. While the N-terminal 31 residues of mCdt1CL form a flexible loop with a short helix near the middle, the rest of mCdt1C folds into a winged helix structure. Together with the middle domain of mouse Cdt1 (mCdt1M, residues 172-368), this study reveals that Cdt1 is formed with a tandem repeat of the winged helix domain. The winged helix fold is also conserved in other licensing factors including archaeal ORC and Cdc6, which supports an idea that these replication initiators may have evolved from a common ancestor. Based on the structure of mCdt1C, in conjunction with the biochemical analysis, we propose a binding site for the MCM complex within the mCdt1C.


    Organizational Affiliation

    The Magnetic Resonance Team, Korea Basic Science Institute, 804-1 Yangchung-Ri, Ochang, Chungbuk 363-883, South Korea.



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
DNA replication factor Cdt1
A
106Mus musculusMutation(s): 0 
Gene Names: Cdt1Ris2
Find proteins for Q8R4E9 (Mus musculus)
Go to UniProtKB:  Q8R4E9
Protein Feature View
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.89 Å
  • R-Value Free: 0.236 
  • R-Value Work: 0.211 
  • R-Value Observed: 0.212 
  • Space Group: P 41 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 52.565α = 90
b = 52.565β = 90
c = 96.035γ = 90
Software Package:
Software NamePurpose
HKL-2000data collection
SOLVEphasing
PHENIXrefinement
HKL-2000data reduction
HKL-2000data scaling

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

  • Deposited Date: 2009-07-06 
  • Released Date: 2009-10-13 
  • Deposition Author(s): Cho, Y., Lee, J.H.

Revision History 

  • Version 1.0: 2009-10-13
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance