2I36

Crystal structure of trigonal crystal form of ground-state rhodopsin


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 4.1 Å
  • R-Value Free: 0.412 
  • R-Value Work: 0.382 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Crystal structure of a photoactivated deprotonated intermediate of rhodopsin.

Salom, D.Lodowski, D.T.Stenkamp, R.E.Trong, I.L.Golczak, M.Jastrzebska, B.Harris, T.Ballesteros, J.A.Palczewski, K.

(2006) Proc.Natl.Acad.Sci.Usa 103: 16123-16128

  • DOI: 10.1073/pnas.0608022103
  • Primary Citation of Related Structures:  2I35, 2I37

  • PubMed Abstract: 
  • The changes that lead to activation of G protein-coupled receptors have not been elucidated at the structural level. In this work we report the crystal structures of both ground state and a photoactivated deprotonated intermediate of bovine rhodopsin ...

    The changes that lead to activation of G protein-coupled receptors have not been elucidated at the structural level. In this work we report the crystal structures of both ground state and a photoactivated deprotonated intermediate of bovine rhodopsin at a resolution of 4.15 A. In the photoactivated state, the Schiff base linking the chromophore and Lys-296 becomes deprotonated, reminiscent of the G protein-activating state, metarhodopsin II. The structures reveal that the changes that accompany photoactivation are smaller than previously predicted for the metarhodopsin II state and include changes on the cytoplasmic surface of rhodopsin that possibly enable the coupling to its cognate G protein, transducin. Furthermore, rhodopsin forms a potentially physiologically relevant dimer interface that involves helices I, II, and 8, and when taken with the prior work that implicates helices IV and V as the physiological dimer interface may account for one of the interfaces of the oligomeric structure of rhodopsin seen in the membrane by atomic force microscopy. The activation and oligomerization models likely extend to the majority of other G protein-coupled receptors.


    Organizational Affiliation

    Novasite Pharmaceuticals Inc., San Diego, CA 92121, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Rhodopsin
A, B, C
349Bos taurusGene Names: RHO
Find proteins for P02699 (Bos taurus)
Go to Gene View: RHO
Go to UniProtKB:  P02699
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
MAN
Query on MAN

Download SDF File 
Download CCD File 
A, B, C
ALPHA-D-MANNOSE
C6 H12 O6
WQZGKKKJIJFFOK-PQMKYFCFSA-N
 Ligand Interaction
NAG
Query on NAG

Download SDF File 
Download CCD File 
A, B, C
N-ACETYL-D-GLUCOSAMINE
C8 H15 N O6
OVRNDRQMDRJTHS-FMDGEEDCSA-N
 Ligand Interaction
PLM
Query on PLM

Download SDF File 
Download CCD File 
A
PALMITIC ACID
C16 H32 O2
IPCSVZSSVZVIGE-UHFFFAOYSA-N
 Ligand Interaction
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
ACE
Query on ACE
A, B, C
NON-POLYMERC2 H4 O

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Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 4.1 Å
  • R-Value Free: 0.412 
  • R-Value Work: 0.382 
  • Space Group: P 31 1 2
Unit Cell:
Length (Å)Angle (°)
a = 159.866α = 90.00
b = 159.866β = 90.00
c = 142.150γ = 120.00
Software Package:
Software NamePurpose
HKL-2000data reduction
MOLREPphasing
REFMACrefinement
SSRLdata collection
HKL-2000data scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2006-10-17
    Type: Initial release
  • Version 1.1: 2008-05-01
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Non-polymer description, Version format compliance
  • Version 1.3: 2011-10-19
    Type: Derived calculations