5CBK

Crystal structure of the strigolactone receptor ShHTL5 from Striga hermonthica


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.462 Å
  • R-Value Free: 0.226 
  • R-Value Work: 0.168 

wwPDB Validation 3D Report Full Report


This is version 1.0 of the entry. See complete history

Literature

Structure-function analysis identifies highly sensitive strigolactone receptors in Striga.

Toh, S.Holbrook-Smith, D.Stogios, P.J.Onopriyenko, O.Lumba, S.Tsuchiya, Y.Savchenko, A.McCourt, P.

(2015) Science 350: 203-207

  • DOI: 10.1126/science.aac9476

  • PubMed Abstract: 
  • Strigolactones are naturally occurring signaling molecules that affect plant development, fungi-plant interactions, and parasitic plant infestations. We characterized the function of 11 strigolactone receptors from the parasitic plant Striga hermonth ...

    Strigolactones are naturally occurring signaling molecules that affect plant development, fungi-plant interactions, and parasitic plant infestations. We characterized the function of 11 strigolactone receptors from the parasitic plant Striga hermonthica using chemical and structural biology. We found a clade of polyspecific receptors, including one that is sensitive to picomolar concentrations of strigolactone. A crystal structure of a highly sensitive strigolactone receptor from Striga revealed a larger binding pocket than that of the Arabidopsis receptor, which could explain the increased range of strigolactone sensitivity. Thus, the sensitivity of Striga to strigolactones from host plants is driven by receptor sensitivity. By expressing strigolactone receptors in Arabidopsis, we developed a bioassay that can be used to identify chemicals and crops with altered strigolactone levels.


    Organizational Affiliation

    Cell and Systems Biology, University of Toronto, 25 Willcocks Street, Toronto M5S 3B2, Canada. peter.mccourt@utoronto.ca.,Department of Chemical Engineering and Applied Chemistry, Banting and Best Department of Medical Research, University of Toronto, 200 College Street, Toronto M5S 3E5, Canada.,Cell and Systems Biology, University of Toronto, 25 Willcocks Street, Toronto M5S 3B2, Canada.,Institute of Transformative Bio-Molecules, Nagoya University, Japan, Furo-cho, Chikusa-ku, Nagoya, Aichi 464-8602, Japan.,Department of Chemical Engineering and Applied Chemistry, Banting and Best Department of Medical Research, University of Toronto, 200 College Street, Toronto M5S 3E5, Canada. Center for Structural Genomics of Infectious Diseases, contracted by National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
ShHTL5
A
271Striga hermonthicaMutation(s): 0 
Gene Names: ShHTL5
Find proteins for A0A0M5I297 (Striga hermonthica)
Go to UniProtKB:  A0A0M5I297
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
CL
Query on CL

Download SDF File 
Download CCD File 
A
CHLORIDE ION
Cl
VEXZGXHMUGYJMC-UHFFFAOYSA-M
 Ligand Interaction
MG
Query on MG

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Download CCD File 
A
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
 Ligand Interaction
PE3
Query on PE3

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Download CCD File 
A
3,6,9,12,15,18,21,24,27,30,33,36,39-TRIDECAOXAHENTETRACONTANE-1,41-DIOL
POLYETHYLENE GLYCOL
C28 H58 O15
ILLKMACMBHTSHP-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.462 Å
  • R-Value Free: 0.226 
  • R-Value Work: 0.168 
  • Space Group: P 65 2 2
Unit Cell:
Length (Å)Angle (°)
a = 102.282α = 90.00
b = 102.282β = 90.00
c = 101.734γ = 120.00
Software Package:
Software NamePurpose
PHENIXrefinement
HKL-3000data scaling
PHASERphasing
HKL-3000data reduction
Cootmodel building

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2015-10-21
    Type: Initial release