2GTE

Drosophila OBP LUSH bound to attractant pheromone 11-cis-vaccenyl acetate


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.40 Å
  • R-Value Free: 0.203 
  • R-Value Work: 0.175 
  • R-Value Observed: 0.178 

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Ligand Structure Quality Assessment 


This is version 1.3 of the entry. See complete history


Literature

Activation of pheromone-sensitive neurons is mediated by conformational activation of pheromone-binding protein

Laughlin, J.D.Ha, T.S.Jones, D.N.Smith, D.P.

(2008) Cell 133: 1255-1265

  • DOI: https://doi.org/10.1016/j.cell.2008.04.046
  • Primary Citation of Related Structures:  
    2GTE, 2QDI

  • PubMed Abstract: 

    Detection of volatile odorants by olfactory neurons is thought to result from direct activation of seven-transmembrane odorant receptors by odor molecules. Here, we show that detection of the Drosophila pheromone, 11-cis vaccenyl acetate (cVA), is instead mediated by pheromone-induced conformational shifts in the extracellular pheromone-binding protein, LUSH. We show that LUSH undergoes a pheromone-specific conformational change that triggers the firing of pheromone-sensitive neurons. Amino acid substitutions in LUSH that are predicted to reduce or enhance the conformational shift alter sensitivity to cVA as predicted in vivo. One substitution, LUSH(D118A), produces a dominant-active LUSH protein that stimulates T1 neurons through the neuronal receptor components Or67d and SNMP in the complete absence of pheromone. Structural analysis of LUSH(D118A) reveals that it closely resembles cVA-bound LUSH. Therefore, the pheromone-binding protein is an inactive, extracellular ligand converted by pheromone molecules into an activator of pheromone-sensitive neurons and reveals a distinct paradigm for detection of odorants.


  • Organizational Affiliation

    Department of Pharmacology, University of Colorado at Denver and Health Sciences Center, 12801 East 17th Avenue, M/S 8303, P.O. Box 6511, Aurora CO 80045.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
General odorant-binding protein lush
A, B
124Drosophila melanogasterMutation(s): 0 
Gene Names: lush
UniProt
Find proteins for O02372 (Drosophila melanogaster)
Explore O02372 
Go to UniProtKB:  O02372
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupO02372
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.40 Å
  • R-Value Free: 0.203 
  • R-Value Work: 0.175 
  • R-Value Observed: 0.178 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 53.124α = 90
b = 65.27β = 90
c = 80.615γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
Blu-Icedata collection
d*TREKdata scaling
MOLREPphasing

Structure Validation

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Ligand Structure Quality Assessment 


Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2007-06-12
    Type: Initial release
  • Version 1.1: 2008-05-01
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2024-04-03
    Changes: Data collection, Database references, Derived calculations, Refinement description