2V8C

Mouse Profilin IIa in complex with the proline-rich domain of VASP


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.98 Å
  • R-Value Free: 0.181 
  • R-Value Work: 0.145 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

High-Resolution Structural Analysis of Mammalian Profilin 2A Complex Formation with Two Physiological Ligands: The Formin Homology 1 Domain of Mdia1 and the Proline-Rich Domain of Vasp.

Kursula, P.Kursula, I.Massimi, M.Song, Y.H.Downer, J.Stanley, W.A.Witke, W.Wilmanns, M.

(2008) J.Mol.Biol. 375: 270

  • DOI: 10.1016/j.jmb.2007.10.050
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Profilins are small proteins capable of binding actin, poly-l-proline and other proline-rich sequences, and phosphatidylinositol (4,5)-bisphosphate. A number of proline-rich ligands for profilin have been characterised, including proteins of the Ena/ ...

    Profilins are small proteins capable of binding actin, poly-l-proline and other proline-rich sequences, and phosphatidylinositol (4,5)-bisphosphate. A number of proline-rich ligands for profilin have been characterised, including proteins of the Ena/VASP and formin families. We have determined the high-resolution crystal structures of mouse profilin 2a in complex with peptides from two functionally important ligands from different families, VASP and mDia1. The structures show that the binding mode of the peptide ligand is strongly affected by the non-proline residues in the sequence, and the peptides from VASP and mDia1 bind to profilin 2a in distinct modes. The high resolution of the crystallographic data allowed us to detect conserved CH-pi hydrogen bonds between the peptide and profilin in both complexes. Furthermore, both peptides, which are shown to have micromolar affinity, induced the dimerisation of profilin, potentially leading to functionally different ligand-profilin-actin complexes. The peptides did not significantly affect actin polymerisation kinetics in the presence or in the absence of profilin 2a. Mutant profilins were tested for binding to poly-L-proline and the VASP and mDia1 peptides, and the F139A mutant bound proline-rich ligands with near-native affinity. Peptide blotting using a series of designed peptides with profilins 1 and 2a indicates differences between the two profilins towards proline-rich peptides from mDia1 and VASP. Our data provide structural insights into the mechanisms of mDia1 and VASP regulated actin polymerisation.


    Organizational Affiliation

    EMBL Hamburg Outstation, DESY, Notkestrasse 85, D-22607 Hamburg, Germany. petri.kursula@oulu.fi




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
PROFILIN-2
A
140Mus musculusMutation(s): 0 
Gene Names: Pfn2
Find proteins for Q9JJV2 (Mus musculus)
Go to UniProtKB:  Q9JJV2
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
VASODILATOR-STIMULATED PHOSPHOPROTEIN
C
20Mus musculusMutation(s): 0 
Gene Names: Vasp
Find proteins for P70460 (Mus musculus)
Go to UniProtKB:  P70460
Small Molecules
Ligands 4 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
NA
Query on NA

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Download CCD File 
A
SODIUM ION
Na
FKNQFGJONOIPTF-UHFFFAOYSA-N
 Ligand Interaction
SO4
Query on SO4

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Download CCD File 
A
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
GOL
Query on GOL

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Download CCD File 
A
GLYCEROL
GLYCERIN; PROPANE-1,2,3-TRIOL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
 Ligand Interaction
IPA
Query on IPA

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Download CCD File 
A
ISOPROPYL ALCOHOL
2-PROPANOL
C3 H8 O
KFZMGEQAYNKOFK-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.98 Å
  • R-Value Free: 0.181 
  • R-Value Work: 0.145 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 43.730α = 90.00
b = 47.090β = 90.00
c = 68.580γ = 90.00
Software Package:
Software NamePurpose
MOLREPphasing
REFMACrefinement
XDSdata reduction
XSCALEdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2007-12-18
    Type: Initial release
  • Version 1.1: 2016-12-21
    Type: Database references, Derived calculations, Non-polymer description, Other, Source and taxonomy, Structure summary, Version format compliance