Crystal structure of mouse Cryptochrome 1

Experimental Data Snapshot

  • Resolution: 2.65 Å
  • R-Value Free: 0.260 
  • R-Value Work: 0.190 
  • R-Value Observed: 0.194 

wwPDB Validation   3D Report Full Report

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Structures of Drosophila cryptochrome and mouse cryptochrome1 provide insight into circadian function.

Czarna, A.Berndt, A.Singh, H.R.Grudziecki, A.Ladurner, A.G.Timinszky, G.Kramer, A.Wolf, E.

(2013) Cell 153: 1394-1405

  • DOI: https://doi.org/10.1016/j.cell.2013.05.011
  • Primary Citation of Related Structures:  
    4JZY, 4K03, 4K0R

  • PubMed Abstract: 

    Drosophila cryptochrome (dCRY) is a FAD-dependent circadian photoreceptor, whereas mammalian cryptochromes (CRY1/2) are integral clock components that repress mCLOCK/mBMAL1-dependent transcription. We report crystal structures of full-length dCRY, a dCRY loop deletion construct, and the photolyase homology region of mouse CRY1 (mCRY1). Our dCRY structures depict Phe534 of the regulatory tail in the same location as the photolesion in DNA-repairing photolyases and reveal that the sulfur loop and tail residue Cys523 plays key roles in the dCRY photoreaction. Our mCRY1 structure visualizes previously characterized mutations, an NLS, and MAPK and AMPK phosphorylation sites. We show that the FAD and antenna chromophore-binding regions, a predicted coiled-coil helix, the C-terminal lid, and charged surfaces are involved in FAD-independent mPER2 and FBXL3 binding and mCLOCK/mBMAL1 transcriptional repression. The structure of a mammalian cryptochrome1 protein may catalyze the development of CRY chemical probes and the design of therapeutic metabolic modulators.

  • Organizational Affiliation

    Department of Physiological Chemistry and Centre for Integrated Protein Science Munich (CIPSM), Butenandt Institute, Ludwig Maximilians University of Munich, Butenandtstrasse 5, 81377 Munich, Germany.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Cryptochrome-1617Mus musculusMutation(s): 0 
Gene Names: Cry1
UniProt & NIH Common Fund Data Resources
Find proteins for P97784 (Mus musculus)
Explore P97784 
Go to UniProtKB:  P97784
IMPC:  MGI:1270841
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP97784
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 2.65 Å
  • R-Value Free: 0.260 
  • R-Value Work: 0.190 
  • R-Value Observed: 0.194 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 44.17α = 90
b = 79.55β = 90
c = 127.39γ = 90
Software Package:
Software NamePurpose
XDSdata scaling
XDSdata reduction
XSCALEdata scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2013-06-26
    Type: Initial release