4PT1

Crystal structure of Locusta migratoria odorant binding proteins lmigOBP1


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.65 Å
  • R-Value Free: 0.229 
  • R-Value Work: 0.184 
  • R-Value Observed: 0.186 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Crystal structure of the Locusta migratoria odorant binding protein.

Zheng, J.Li, J.Han, L.Wang, Y.Wu, W.Qi, X.Tao, Y.Zhang, L.Zhang, Z.Chen, Z.

(2015) Biochem Biophys Res Commun 456: 737-742

  • DOI: 10.1016/j.bbrc.2014.12.048
  • Primary Citation of Related Structures:  
    4PT1

  • PubMed Abstract: 
  • Locusta migratoria (Lmig) causes enormous losses to agricultural products, especially because it often infests the world with great swarms as locust plagues. Locusts find their plant hosts on which they feed through their olfactory system, in which odorant binding proteins (OBPs) play an important role ...

    Locusta migratoria (Lmig) causes enormous losses to agricultural products, especially because it often infests the world with great swarms as locust plagues. Locusts find their plant hosts on which they feed through their olfactory system, in which odorant binding proteins (OBPs) play an important role. Previous study indicated that the amino acid sequences of LmigOBP showed low similarity to OBPs from other insect orders and we speculated that it might perform unique binding behavior. Here, we solved the first LmigOBP1 structure at 1.65Å, which is a monomer in solution and disulfide bonds play a key role in maintaining its function. We show that LmigOBP1 possesses a unique seventh α-helix, which is located at the surface with strong interactions with the LmigOBP1 scaffold consisting of other six α-helices. Moreover, the seventh α-helix forms a wall of an "L" shaped internal hydrophobic cavity to accommodate linear ligands, which is consistent with the binding experiments. We also demonstrate that the ligand-binding pocket in LmigOBP1 is greatly different from that in the closest homologs mosquito OBPs. Taken together, this study provides a structural basis for designing small inhibitors to control locust.


    Organizational Affiliation

    State Key Laboratory of Agrobiotechnology, China Agricultural University, Beijing 100193, China. Electronic address: chenzhongzhou@cau.edu.cn.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Odorant-binding protein 1dA, B131Locusta migratoriaMutation(s): 0 
Gene Names: lmigobp1
UniProt
Find proteins for Q3HM32 (Locusta migratoria)
Explore Q3HM32 
Go to UniProtKB:  Q3HM32
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ3HM32
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
PG0
Query on PG0

Download Ideal Coordinates CCD File 
C [auth A],
D [auth A],
E [auth B],
F [auth B]
2-(2-METHOXYETHOXY)ETHANOL
C5 H12 O3
SBASXUCJHJRPEV-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.65 Å
  • R-Value Free: 0.229 
  • R-Value Work: 0.184 
  • R-Value Observed: 0.186 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 33.103α = 90
b = 66.039β = 92.41
c = 51.134γ = 90
Software Package:
Software NamePurpose
ADSCdata collection
BALBESphasing
REFMACrefinement
HKL-2000data reduction
HKL-2000data scaling

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2014-12-31
    Type: Initial release
  • Version 1.1: 2015-10-21
    Changes: Database references