1VQX

ARRESTIN-BOUND NMR STRUCTURES OF THE PHOSPHORYLATED CARBOXY-TERMINAL DOMAIN OF RHODOPSIN, REFINED


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 15 
  • Selection Criteria: structures with the lowest energy 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Conformational Changes in the Phosphorylated C-Terminal Domain of Rhodopsin During Rhodopsin Arrestin Interactions

Kisselev, O.G.Downs, M.A.Mcdowell, J.H.Hargrave, P.A.

(2004) J Biol Chem 279: 51203

  • DOI: 10.1074/jbc.M407341200
  • Structures With Same Primary Citation

  • PubMed Abstract: 
  • Phosphorylation of activated G-protein-coupled receptors and the subsequent binding of arrestin mark major molecular events of homologous desensitization. In the visual system, interactions between arrestin and the phosphorylated rhodopsin are pivota ...

    Phosphorylation of activated G-protein-coupled receptors and the subsequent binding of arrestin mark major molecular events of homologous desensitization. In the visual system, interactions between arrestin and the phosphorylated rhodopsin are pivotal for proper termination of visual signals. By using high resolution proton nuclear magnetic resonance spectroscopy of the phosphorylated C terminus of rhodopsin, represented by a synthetic 7-phosphopolypeptide, we show that the arrestin-bound conformation is a well ordered helix-loop structure connected to rhodopsin via a flexible linker. In a model of the rhodopsin-arrestin complex, the phosphates point in the direction of arrestin and form a continuous negatively charged surface, which is stabilized by a number of positively charged lysine and arginine residues of arrestin. Opposite to the mostly extended structure of the unphosphorylated C-terminal domain of rhodopsin, the arrestin-bound C-terminal helix is a compact domain that occupies a central position between the cytoplasmic loops and occludes the key binding sites of transducin. In conjunction with other binding sites, the helix-loop structure provides a mechanism of shielding phosphates in the center of the rhodopsin-arrestin complex and appears critical in guiding arrestin for high affinity binding with rhodopsin.


    Organizational Affiliation

    Department of Ophthalmology, St. Louis University School of Medicine, St. Louis, Missouri 63104, USA. kisselev@slu.edu



Macromolecules
  • Find similar proteins by: Sequence   |   Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
RHODOPSIN
A
19N/AMutation(s): 7 
Find proteins for P02699 (Bos taurus)
Go to UniProtKB:  P02699
Protein Feature View
  • Reference Sequence
Small Molecules
Modified Residues  2 Unique
IDChainsTypeFormula2D DiagramParent
SEP
Query on SEP
AL-PEPTIDE LINKINGC3 H8 N O6 PSER
TPO
Query on TPO
AL-PEPTIDE LINKINGC4 H10 N O6 PTHR
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 15 
  • Selection Criteria: structures with the lowest energy 
  • OLDERADO: 1VQX Olderado

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2005-01-18
    Type: Initial release
  • Version 1.1: 2008-04-27
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance