Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 150 
  • Conformers Submitted: 
  • Selection Criteria: target function 

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Structures of the intradiskal loops and amino terminus of the G-protein receptor, rhodopsin.

Yeagle, P.L.Salloum, A.Chopra, A.Bhawsar, N.Ali, L.Kuzmanovski, G.Alderfer, J.L.Albert, A.D.

(2000) J Pept Res 55: 455-465

  • DOI: https://doi.org/10.1034/j.1399-3011.2000.00707.x
  • Primary Citation of Related Structures:  
    1EDS, 1EDV, 1EDW, 1EDX

  • PubMed Abstract: 

    The intradiskal surface of the transmembrane protein, rhodopsin, consists of the amino terminal domain and three loops connecting six of the seven transmembrane helices. This surface corresponds to the extracellular surface of other G-protein receptors. Peptides that represent each of the extramembraneous domains on this surface (three loops and the amino terminus) were synthesized. These peptides also included residues which, based on a hydrophobic plot, could be expected to be part of the transmembrane helix. The structure of each of these peptides in solution was then determined using two-dimensional 1H nuclear magnetic resonance. All peptide domains showed ordered structures in solution. The structures of each of the peptides from intradiskal loops of rhodopsin exhibited a turn in the central region of the peptide. The ends of the peptides show an unwinding of the transmembrane helices to form this turn. The amino terminal domain peptide exhibited alpha-helical regions with breaks and bends at proline residues. This region forms a compact domain. Together, the structures for the loop and amino terminus domains indicate that the intradiskal surface of rhodopsin is ordered. These data further suggest a structural motif for short loops in transmembrane proteins. The ordered structures of these loops, in the absence of the transmembrane helices, indicate that the primary sequences of these loops are sufficient to code for the turn.

  • Organizational Affiliation

    Department of Molecular and Cell Biology, University of Connecticut, Storrs 06269, USA. yeagle@uconnvm.uconn.edu

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
RHODOPSIN31N/AMutation(s): 0 
Find proteins for P02699 (Bos taurus)
Explore P02699 
Go to UniProtKB:  P02699
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UniProt GroupP02699
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 150 
  • Conformers Submitted: 
  • Selection Criteria: target function 

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2000-08-09
    Type: Initial release
  • Version 1.1: 2008-04-27
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2022-02-16
    Changes: Data collection, Database references, Derived calculations
  • Version 1.4: 2024-05-22
    Changes: Data collection