5THM

Esterase-6 from Drosophila melanogaster


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.15 Å
  • R-Value Free: 0.210 
  • R-Value Work: 0.155 
  • R-Value Observed: 0.158 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Molecular basis for the behavioral effects of the odorant degrading enzyme Esterase 6 in Drosophila.

Younus, F.Fraser, N.J.Coppin, C.W.Liu, J.W.Correy, G.J.Chertemps, T.Pandey, G.Maibeche, M.Jackson, C.J.Oakeshott, J.G.

(2017) Sci Rep 7: 46188-46188

  • DOI: 10.1038/srep46188
  • Primary Citation of Related Structures:  
    5THM

  • PubMed Abstract: 
  • Previous electrophysiological and behavioural studies implicate esterase 6 in the processing of the pheromone cis-vaccenyl acetate and various food odorants that affect aggregation and reproductive behaviours. Here we show esterase 6 has relatively high activity against many of the short-mid chain food esters, but negligible activity against cis-vaccenyl acetate ...

    Previous electrophysiological and behavioural studies implicate esterase 6 in the processing of the pheromone cis-vaccenyl acetate and various food odorants that affect aggregation and reproductive behaviours. Here we show esterase 6 has relatively high activity against many of the short-mid chain food esters, but negligible activity against cis-vaccenyl acetate. The crystal structure of esterase 6 confirms its substrate-binding site can accommodate many short-mid chain food esters but not cis-vaccenyl acetate. Immunohistochemical assays show esterase 6 is expressed in non-neuronal cells in the third antennal segment that could be accessory or epidermal cells surrounding numerous olfactory sensilla, including basiconics involved in food odorant detection. Esterase 6 is also produced in trichoid sensilla, but not in the same cell types as the cis-vaccenyl acetate binding protein LUSH. Our data support a model in which esterase 6 acts as a direct odorant degrading enzyme for many bioactive food esters, but not cis-vaccenyl acetate.


    Organizational Affiliation

    CSIRO Land and Water, Black Mountain, Canberra, ACT, 2601, Australia.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Esterase-6 A533Drosophila melanogasterMutation(s): 16 
Gene Names: Est-6EST6CG6917
EC: 3.1.1.1
Find proteins for P08171 (Drosophila melanogaster)
Explore P08171 
Go to UniProtKB:  P08171
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
7BZ
Query on 7BZ

Download Ideal Coordinates CCD File 
A
N,N-dimethylboranamine
C2 H8 B N
SDWBRBLWPQDUQP-UHFFFAOYSA-N
 Ligand Interaction
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
MLY
Query on MLY
AL-PEPTIDE LINKINGC8 H18 N2 O2LYS
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.15 Å
  • R-Value Free: 0.210 
  • R-Value Work: 0.155 
  • R-Value Observed: 0.158 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 67.713α = 90
b = 80.645β = 90
c = 107.038γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
XDSdata reduction
Aimlessdata scaling
MOLREPphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2017-03-08
    Type: Initial release
  • Version 1.1: 2017-04-26
    Changes: Database references