3UE6

The dark structure of the blue-light photoreceptor Aureochrome1 LOV


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.75 Å
  • R-Value Free: 0.256 
  • R-Value Work: 0.192 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Crystal structures of Aureochrome1 LOV suggest new design strategies for optogenetics.

Mitra, D.Yang, X.Moffat, K.

(2012) Structure 20: 698-706

  • DOI: 10.1016/j.str.2012.02.016
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Aureochrome1, a signaling photoreceptor from a eukaryotic photosynthetic stramenopile, confers blue-light-regulated DNA binding on the organism. Its topology, in which a C-terminal LOV sensor domain is linked to an N-terminal DNA-binding bZIP effecto ...

    Aureochrome1, a signaling photoreceptor from a eukaryotic photosynthetic stramenopile, confers blue-light-regulated DNA binding on the organism. Its topology, in which a C-terminal LOV sensor domain is linked to an N-terminal DNA-binding bZIP effector domain, contrasts with the reverse sensor-effector topology in most other known LOV-photoreceptors. How, then, is signal transmitted in Aureochrome1? The dark- and light-state crystal structures of Aureochrome1 LOV domain (AuLOV) show that its helical N- and C-terminal flanking regions are packed against the external surface of the core β sheet, opposite to the FMN chromophore on the internal surface. Light-induced conformational changes occur in the quaternary structure of the AuLOV dimer and in Phe298 of the Hβ strand in the core. The properties of AuLOV extend the applicability of LOV domains as versatile design modules that permit fusion to effector domains via either the N- or C-termini to confer blue-light sensitivity.


    Organizational Affiliation

    Department of Biochemistry and Molecular Biology, University of Chicago, 929 E 57th Street, Chicago, IL 60637, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Aureochrome1
A, B, C, D, E, F
166Vaucheria frigidaMutation(s): 0 
Gene Names: AUREO1
Find proteins for A8QW55 (Vaucheria frigida)
Go to UniProtKB:  A8QW55
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
PO4
Query on PO4

Download SDF File 
Download CCD File 
B, F
PHOSPHATE ION
O4 P
NBIIXXVUZAFLBC-UHFFFAOYSA-K
 Ligand Interaction
FMN
Query on FMN

Download SDF File 
Download CCD File 
A, B, C, D, E, F
FLAVIN MONONUCLEOTIDE
RIBOFLAVIN MONOPHOSPHATE
C17 H21 N4 O9 P
FVTCRASFADXXNN-SCRDCRAPSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.75 Å
  • R-Value Free: 0.256 
  • R-Value Work: 0.192 
  • Space Group: P 43
Unit Cell:
Length (Å)Angle (°)
a = 73.987α = 90.00
b = 73.987β = 90.00
c = 177.468γ = 90.00
Software Package:
Software NamePurpose
HKL-2000data scaling
PHENIXrefinement
HKL-2000data reduction
REFMACrefinement
PHASERphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2012-04-11
    Type: Initial release
  • Version 1.1: 2013-02-20
    Type: Database references
  • Version 1.2: 2017-11-08
    Type: Refinement description
  • Version 1.3: 2019-07-17
    Type: Data collection, Refinement description