2JKG

Plasmodium falciparum profilin


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.89 Å
  • R-Value Free: 0.217 
  • R-Value Work: 0.176 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Structural Basis for Parasite-Specific Functions of the Divergent Profilin of Plasmodium Falciparum.

Kursula, I.Kursula, P.Ganter, M.Panjikar, S.Matuschewski, K.Schuler, H.

(2008) Structure 16: 1638

  • DOI: 10.1016/j.str.2008.09.008
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Profilins are key regulators of actin dynamics. They sequester actin monomers, forming a pool for rapid polymer formation stimulated by proteins such as formins. Apicomplexan parasites utilize a highly specialized microfilament system for motility an ...

    Profilins are key regulators of actin dynamics. They sequester actin monomers, forming a pool for rapid polymer formation stimulated by proteins such as formins. Apicomplexan parasites utilize a highly specialized microfilament system for motility and host cell invasion. Their genomes encode only a small number of divergent actin regulators. We present the first crystal structure of an apicomplexan profilin, that of the malaria parasite Plasmodium falciparum, alone and in complex with a polyproline ligand peptide. The most striking feature of Plasmodium profilin is a unique minidomain consisting of a large beta-hairpin extension common to all apicomplexan parasites, and an acidic loop specific for Plasmodium species. Reverse genetics in the rodent malaria model, Plasmodium berghei, suggests that profilin is essential for the invasive blood stages of the parasite. Together, our data establish the structural basis for understanding the functions of profilin in the malaria parasite.


    Organizational Affiliation

    Department of Biochemistry, University of Oulu, 90570 Oulu, Finland. inari.kursula@oulu.fi




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
PROFILIN
A
179Plasmodium falciparum (isolate 3D7)Mutation(s): 0 
Gene Names: Pfn
Find proteins for Q8I2J4 (Plasmodium falciparum (isolate 3D7))
Go to UniProtKB:  Q8I2J4
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
OCTAPROLINE PEPTIDE
P
8N/AMutation(s): 0 
Protein Feature View is not available: No corresponding UniProt sequence found.
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
MG
Query on MG

Download SDF File 
Download CCD File 
A
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.89 Å
  • R-Value Free: 0.217 
  • R-Value Work: 0.176 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 45.520α = 90.00
b = 49.700β = 90.00
c = 83.810γ = 90.00
Software Package:
Software NamePurpose
Auto-Rickshawphasing
XSCALEdata scaling
REFMACrefinement
XDSdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2008-09-23
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Advisory, Version format compliance
  • Version 1.2: 2016-12-21
    Type: Data collection, Source and taxonomy, Structure summary
  • Version 1.3: 2018-01-17
    Type: Data collection