3ED8

Application of the superfolder YFP bimolecular fluorescence complementation for studying protein-protein interactions in vitro


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.70 Å
  • R-Value Free: 0.218 
  • R-Value Work: 0.174 
  • R-Value Observed: 0.177 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Applicability of superfolder YFP bimolecular fluorescence complementation in vitro.

Ottmann, C.Weyand, M.Wolf, A.Kuhlmann, J.Ottmann, C.

(2009) Biol Chem 390: 81-90

  • DOI: 10.1515/BC.2009.008
  • Primary Citation of Related Structures:  
    3ED8

  • PubMed Abstract: 
  • Bimolecular fluorescence complementation (BiFC) using yellow fluorescent protein (YFP) is a widely employed method to study protein-protein interactions in cells. As yet, this technique has not been used in vitro. To evaluate a possible application o ...

    Bimolecular fluorescence complementation (BiFC) using yellow fluorescent protein (YFP) is a widely employed method to study protein-protein interactions in cells. As yet, this technique has not been used in vitro. To evaluate a possible application of BiFC in vitro, we constructed a 'superfolder split YFP' system where 15 mutations enhance expression of the fusion proteins in Escherichia coli and enable a native purification due to improved solubility. Here, we present the crystal structure of 'superfolder YFP', providing the structural basis for the enhanced folding and stability characteristics. Complementation between the two non-fluorescent YFP fragments fused to HRas and Raf1RBD or to 14-3-3 and PMA2-CT52 resulted in the constitution of the functional fluorophore. The in vivo BiFC with these protein interaction pairs was demonstrated in eukaryotic cell lines as well. Here, we present for the first time BiFC in vitro studies with natively purified superfolder YFP fusion proteins and show the potential and drawbacks of this method for analyzing protein-protein interactions.


    Organizational Affiliation

    Department of Structural Biology, Max Planck Institute of Molecular Physiology, Otto-Hahn-Str. 11, D-44227 Dortmund, Germany.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
yellow fluorescence proteinABCDE260Aequorea victoriaMutation(s): 0 
Gene Names: GFP
Find proteins for P42212 (Aequorea victoria)
Explore P42212 
Go to UniProtKB:  P42212
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
CRO
Query on CRO
A,B,C,D,EL-PEPTIDE LINKINGC15 H17 N3 O5THR, TYR, GLY
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.70 Å
  • R-Value Free: 0.218 
  • R-Value Work: 0.174 
  • R-Value Observed: 0.177 
  • Space Group: P 43 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 123.04α = 90
b = 123.04β = 90
c = 247.71γ = 90
Software Package:
Software NamePurpose
PHASERphasing
REFMACrefinement
XDSdata reduction
XSCALEdata scaling

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2009-01-20
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Advisory, Refinement description, Version format compliance