2J4D

Cryptochrome 3 from Arabidopsis thaliana


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.90 Å
  • R-Value Free: 0.221 
  • R-Value Work: 0.189 
  • R-Value Observed: 0.189 

Starting Model: experimental
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This is version 1.4 of the entry. See complete history


Literature

Cryptochrome 3 from Arabidopsis Thaliana: Structural and Functional Analysis of its Complex with a Folate Light Antenna

Klar, T.Pokorny, R.Moldt, J.Batschauer, A.Essen, L.-O.

(2007) J Mol Biol 366: 954

  • DOI: https://doi.org/10.1016/j.jmb.2006.11.066
  • Primary Citation of Related Structures:  
    2J4D

  • PubMed Abstract: 

    Cryptochromes are almost ubiquitous blue-light receptors and act in several species as central components of the circadian clock. Despite being evolutionary and structurally related with DNA photolyases, a class of light-driven DNA-repair enzymes, and having similar cofactor compositions, cryptochromes lack DNA-repair activity. Cryptochrome 3 from the plant Arabidopsis thaliana belongs to the DASH-type subfamily. Its crystal structure determined at 1.9 Angstroms resolution shows cryptochrome 3 in a dimeric state with the antenna cofactor 5,10-methenyltetrahydrofolate (MTHF) bound in a distance of 15.2 Angstroms to the U-shaped FAD chromophore. Spectroscopic studies on a mutant where a residue crucial for MTHF-binding, E149, was replaced by site-directed mutagenesis demonstrate that MTHF acts in cryptochrome 3 as a functional antenna for the photoreduction of FAD.


  • Organizational Affiliation

    Philipps-Universität Marburg, Department of Chemistry, Hans-Meerwein-Strasse, D-35032 Marburg, Germany.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
CRYPTOCHROME DASH
A, B
525Arabidopsis thalianaMutation(s): 0 
UniProt
Find proteins for Q84KJ5 (Arabidopsis thaliana)
Explore Q84KJ5 
Go to UniProtKB:  Q84KJ5
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ84KJ5
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.90 Å
  • R-Value Free: 0.221 
  • R-Value Work: 0.189 
  • R-Value Observed: 0.189 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 76.298α = 90
b = 116.782β = 90
c = 135.024γ = 90
Software Package:
Software NamePurpose
CNSrefinement
MOSFLMdata reduction
SCALAdata scaling
MOLREPphasing

Structure Validation

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Ligand Structure Quality Assessment 


Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2007-06-19
    Type: Initial release
  • Version 1.1: 2011-05-08
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2019-07-24
    Changes: Advisory, Data collection
  • Version 1.4: 2023-12-13
    Changes: Advisory, Data collection, Database references, Other, Refinement description