2PBD

Ternary complex of profilin-actin with the poly-PRO-GAB domain of VASP*


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.501 Å
  • R-Value Free: 0.190 
  • R-Value Work: 0.156 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Structural basis for the recruitment of profilin-actin complexes during filament elongation by Ena/VASP

Ferron, F.Rebowski, G.Lee, S.H.Dominguez, R.

(2007) Embo J. 26: 4597-4606

  • DOI: 10.1038/sj.emboj.7601874
  • Primary Citation of Related Structures:  2PAV

  • PubMed Abstract: 
  • Cells sustain high rates of actin filament elongation by maintaining a large pool of actin monomers above the critical concentration for polymerization. Profilin-actin complexes constitute the largest fraction of polymerization-competent actin monome ...

    Cells sustain high rates of actin filament elongation by maintaining a large pool of actin monomers above the critical concentration for polymerization. Profilin-actin complexes constitute the largest fraction of polymerization-competent actin monomers. Filament elongation factors such as Ena/VASP and formin catalyze the transition of profilin-actin from the cellular pool onto the barbed end of growing filaments. The molecular bases of this process are poorly understood. Here we present structural and energetic evidence for two consecutive steps of the elongation mechanism: the recruitment of profilin-actin by the last poly-Pro segment of vasodilator-stimulated phosphoprotein (VASP) and the binding of profilin-actin simultaneously to this poly-Pro and to the G-actin-binding (GAB) domain of VASP. The actin monomer bound at the GAB domain is proposed to be in position to join the barbed end of the growing filament concurrently with the release of profilin.


    Organizational Affiliation

    Department of Physiology, University of Pennsylvania School of Medicine, Philadelphia, PA, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Actin, alpha skeletal muscle
A
377Oryctolagus cuniculusGene Names: ACTA1 (ACTA)
Find proteins for P68135 (Oryctolagus cuniculus)
Go to Gene View: ACTA1
Go to UniProtKB:  P68135
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Profilin-1
P
139Homo sapiensGene Names: PFN1
Find proteins for P07737 (Homo sapiens)
Go to Gene View: PFN1
Go to UniProtKB:  P07737
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
Vasodilator-stimulated phosphoprotein
V
43Homo sapiensGene Names: VASP
Find proteins for P50552 (Homo sapiens)
Go to Gene View: VASP
Go to UniProtKB:  P50552
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ATP
Query on ATP

Download SDF File 
Download CCD File 
A
ADENOSINE-5'-TRIPHOSPHATE
C10 H16 N5 O13 P3
ZKHQWZAMYRWXGA-KQYNXXCUSA-N
 Ligand Interaction
CA
Query on CA

Download SDF File 
Download CCD File 
A
CALCIUM ION
Ca
BHPQYMZQTOCNFJ-UHFFFAOYSA-N
 Ligand Interaction
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
HIC
Query on HIC
A
L-PEPTIDE LINKINGC7 H11 N3 O2HIS
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.501 Å
  • R-Value Free: 0.190 
  • R-Value Work: 0.156 
  • Space Group: C 1 2 1
Unit Cell:
Length (Å)Angle (°)
a = 119.094α = 90.00
b = 56.589β = 104.75
c = 75.227γ = 90.00
Software Package:
Software NamePurpose
PDB_EXTRACTdata extraction
REFMACrefinement
SCALEPACKdata scaling
AMoREphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2007-11-13
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Version format compliance
  • Version 1.2: 2013-03-06
    Type: Advisory, Other