3TGH

GAP50 the anchor in the inner membrane complex of Plasmodium


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.7 Å
  • R-Value Free: 0.199 
  • R-Value Work: 0.173 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Crystal structure of GAP50, the anchor of the invasion machinery in the inner membrane complex of Plasmodium falciparum.

Bosch, J.Paige, M.H.Vaidya, A.B.Bergman, L.W.Hol, W.G.

(2012) J.Struct.Biol. 178: 61-73

  • DOI: 10.1016/j.jsb.2012.02.009

  • PubMed Abstract: 
  • The glideosome associated protein GAP50 is an essential protein in apicomplexan parasites such as Plasmodium, Toxoplasma and Cryptosporidium, several species of which are important human pathogens. The 44.6kDa protein is part of a multi-protein compl ...

    The glideosome associated protein GAP50 is an essential protein in apicomplexan parasites such as Plasmodium, Toxoplasma and Cryptosporidium, several species of which are important human pathogens. The 44.6kDa protein is part of a multi-protein complex known as the invasion machinery or glideosome, which is required for cell invasion and substrate gliding motility empowered by an actin-myosin motor. GAP50 is anchored through its C-terminal transmembrane helix into the inner membrane complex and interacts via a short six residue C-terminal tail with other proteins of the invasion machinery in the pellicle of the parasite. In this paper we describe the 1.7Å resolution crystal structure of the soluble GAP50 domain from the malaria parasite Plasmodium falciparum. The structure shows an αßßα fold with overall similarity to purple acid phosphatases with, however, little homology regarding the nature of the residues in the active site region of the latter enzyme. While purple acid phosphatases contain a phosphate bridged binuclear Fe-site coordinated by seven side chains with the Fe-ions 3.2Å apart, GAP50 in our crystals contains two cobalt ions each with one protein ligand and a distance between the Co(2+) ions of 18Å.


    Organizational Affiliation

    Department of Biochemistry, University of Washington, Seattle, WA 98195, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Glideosome-associated protein 50
A
342Plasmodium falciparum (isolate 3D7)Gene Names: GAP50
EC: 3.1.3.2
Find proteins for Q8I2X3 (Plasmodium falciparum (isolate 3D7))
Go to UniProtKB:  Q8I2X3
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4

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

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Download CCD File 
A
DIMETHYL SULFOXIDE
C2 H6 O S
IAZDPXIOMUYVGZ-UHFFFAOYSA-N
 Ligand Interaction
CO
Query on CO

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Download CCD File 
A
COBALT (II) ION
Co
XLJKHNWPARRRJB-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.7 Å
  • R-Value Free: 0.199 
  • R-Value Work: 0.173 
  • Space Group: P 32 2 1
Unit Cell:
Length (Å)Angle (°)
a = 57.648α = 90.00
b = 57.648β = 90.00
c = 210.625γ = 120.00
Software Package:
Software NamePurpose
REFMACrefinement
XDSdata scaling
XSCALEdata scaling
MOLREPphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2012-03-07
    Type: Initial release
  • Version 1.1: 2012-04-25
    Type: Database references