1XIO

Anabaena sensory rhodopsin


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.256 
  • R-Value Work: 0.230 

wwPDB Validation 3D Report Full Report


This is version 1.4 of the entry. See complete history

Literature

Anabaena sensory rhodopsin: a photochromic color sensor at 2.0 A.

Vogeley, L.Sineshchekov, O.A.Trivedi, V.D.Sasaki, J.Spudich, J.L.Luecke, H.

(2004) Science 306: 1390-1393

  • DOI: 10.1126/science.1103943

  • PubMed Abstract: 
  • Microbial sensory rhodopsins are a family of membrane-embedded photoreceptors in prokaryotic and eukaryotic organisms. Structures of archaeal rhodopsins, which function as light-driven ion pumps or photosensors, have been reported. We present the str ...

    Microbial sensory rhodopsins are a family of membrane-embedded photoreceptors in prokaryotic and eukaryotic organisms. Structures of archaeal rhodopsins, which function as light-driven ion pumps or photosensors, have been reported. We present the structure of a eubacterial rhodopsin, which differs from those of previously characterized archaeal rhodopsins in its chromophore and cytoplasmic-side portions. Anabaena sensory rhodopsin exhibits light-induced interconversion between stable 13-cis and all-trans states of the retinylidene protein. The ratio of its cis and trans chromophore forms depends on the wavelength of illumination, thus providing a mechanism for a single protein to signal the color of light, for example, to regulate color-sensitive processes such as chromatic adaptation in photosynthesis. Its cytoplasmic half channel, highly hydrophobic in the archaeal rhodopsins, contains numerous hydrophilic residues networked by water molecules, providing a connection from the photoactive site to the cytoplasmic surface believed to interact with the receptor's soluble 14-kilodalton transducer.


    Organizational Affiliation

    Department of Molecular Biology and Biochemistry, University of California, Irvine, CA 92697, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
ANABAENA SENSORY RHODOPSIN
A
261Nostoc sp. (strain PCC 7120 / UTEX 2576)N/A
Membrane protein
mpstruct
Group: 
TRANSMEMBRANE PROTEINS: ALPHA-HELICAL
Sub Group: 
Bacterial and Algal Rhodopsins
Protein: 
Sensory Rhodopsin
Find proteins for Q8YSC4 (Nostoc sp. (strain PCC 7120 / UTEX 2576))
Go to UniProtKB:  Q8YSC4
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
RET
Query on RET

Download SDF File 
Download CCD File 
A
RETINAL
C20 H28 O
NCYCYZXNIZJOKI-OVSJKPMPSA-N
 Ligand Interaction
PEE
Query on PEE

Download SDF File 
Download CCD File 
A
1,2-Dioleoyl-sn-glycero-3-phosphoethanolamine
DOPE
C41 H83 N O8 P
LVNGJLRDBYCPGB-LDLOPFEMSA-O
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.256 
  • R-Value Work: 0.230 
  • Space Group: C 2 2 21
Unit Cell:
Length (Å)Angle (°)
a = 103.095α = 90.00
b = 116.513β = 90.00
c = 56.186γ = 90.00
Software Package:
Software NamePurpose
DENZOdata reduction
HKL-2000data reduction
SCALEPACKdata scaling
CNSphasing
CNSrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2004-10-05
    Type: Initial release
  • Version 1.1: 2008-04-30
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Derived calculations, Version format compliance
  • Version 1.3: 2014-10-29
    Type: Non-polymer description
  • Version 1.4: 2017-10-11
    Type: Refinement description