Evidence map›Paper›PMID 17640664›Full record

ArticleJournal of molecular biology2007

Structural analysis and dynamics of retinal chromophore in dark and meta I states of rhodopsin from 2H NMR of aligned membranes.

Andrey V Struts, Gilmar F J Salgado, Katsunori Tanaka, Sonja Krane, Koji Nakanishi, Michael F Brown

Open access · greenAbstract read
In one paragraph

Article in Journal of molecular biology, 2007. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 34 papers.

0numbers the graph read from it
0cells of the map it votes in
34citing papers in PubMed
2.6field-weighted citation impact, top 10% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

34 citing papers in PubMed, 54 citations in OpenAlex.

  1. Review
  2. Synthesis of 9-CDTetrahedron letters · 2018
    Article
  3. Static solid-stateProgress in nuclear magnetic resonance spectroscopy · 2017
    Review
  4. Article
  5. Article
  6. Article
  7. Article
  8. Uncovering the triggers for GPCR activation using solid-state NMR spectroscopy.Journal of magnetic resonance (San Diego, Calif. : 1997) · 2015
    Article
  9. Review
  10. Review
  11. Article
  12. Deconstructing activation events in rhodopsin.Journal of the American Chemical Society · 2013
    Article
  13. Review
  14. Article
  15. Solid-state 2H NMR relaxation illuminates functional dynamics of retinal cofactor in membrane activation of rhodopsin.Proceedings of the National Academy of Sciences of the United States of America · 2011
    Article
  16. Article
  17. Article
  18. Anabaena sensory rhodopsin is a light-driven unidirectional rotor.Proceedings of the National Academy of Sciences of the United States of America · 2010
    Article
  19. Structure and function of G protein-coupled receptors using NMR spectroscopy.Progress in nuclear magnetic resonance spectroscopy · 2010
    Review
  20. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors at 2 institutions in 1 country.

Andrey V StrutsDepartment of Chemistry, University of Arizona, Tucson, AZ 85721, USA.
Gilmar F J Salgado
Katsunori Tanaka
Sonja Krane
Koji Nakanishi
Michael F Brown
Columbia University · USUniversity of Arizona · US

Funding

MEMBRANE BASIS OF VISUAL EXCITATIONR01EY012049 · NEI · UNIVERSITY OF ARIZONA · PI BROWN, MICHAEL F · 1998 to 2012
$3.3M
STUDIES ON RHODOPSIN &AGE-RELATED MACULAR DEGENERATIONR01GM036564 · NIGMS · COLUMBIA UNIV NEW YORK MORNINGSIDE · PI NAKANISHI, KOJI · 1986 to 2006
$2.4M
NEI NIH HHS EY 12049NEI NIH HHS R01 EY012049NIGMS NIH HHS GM 36564NIGMS NIH HHS R01 GM036564
6 · The paper itself

Abstract

Rhodopsin is a prototype for G protein-coupled receptors (GPCRs) that are implicated in many biological responses in humans. A site-directed (2)H NMR approach was used for structural analysis of retinal within its binding cavity in the dark and pre-activated meta I states. Retinal was labeled with (2)H at the C5, C9, or C13 methyl groups by total synthesis, and was used to regenerate the opsin apoprotein. Solid-state (2)H NMR spectra were acquired for aligned membranes in the low-temperature lipid gel phase versus the tilt angle to the magnetic field. Data reduction assumed a static uniaxial distribution, and gave the retinylidene methyl bond orientations plus the alignment disorder (mosaic spread). The dark-state (2)H NMR structure of 11-cis-retinal shows torsional twisting of the polyene chain and the beta-ionone ring. The ligand undergoes restricted motion, as evinced by order parameters of approximately 0.9 for the spinning C-C(2)H(3) groups, with off-axial fluctuations of approximately 15 degrees . Retinal is accommodated within the rhodopsin binding pocket with a negative pre-twist about the C11=C12 double bond that explains its rapid photochemistry and the trajectory of 11-cis to trans isomerization. In the cryo-trapped meta I state, the (2)H NMR structure shows a reduction of the polyene strain, while torsional twisting of the beta-ionone ring is maintained. Distortion of the retinal conformation is interpreted through substituent control of receptor activation. Steric hindrance between trans retinal and Trp265 can trigger formation of the subsequent activated meta II state. Our results are pertinent to quantum and molecular mechanics simulations of ligands bound to GPCRs, and illustrate how (2)H NMR can be applied to study their biological mechanisms of action.

Indexed as

Nuclear Magnetic Resonance, BiomolecularAnimalsCattleCell MembraneDeuteriumDeuterium Exchange MeasurementLightModels, BiologicalModels, MolecularProtein ConformationRetinaRetinaldehydeRhodopsinStereoisomerismDeuteriumRetinaldehydeRhodopsin

Identifiers

PMID17640664
PMCPMC5233725
OpenAlexW2162210570

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.