2QP2

Structure of a MACPF/perforin-like protein


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.204 
  • R-Value Work: 0.180 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

A common fold mediates vertebrate defense and bacterial attack

Rosado, C.J.Buckle, A.M.Law, R.H.Butcher, R.E.Kan, W.T.Bird, C.H.Ung, K.Browne, K.A.Baran, K.Bashtannyk-Puhalovich, T.A.Faux, N.G.Wong, W.Porter, C.J.Pike, R.N.Ellisdon, A.M.Pearce, M.C.Bottomley, S.P.Emsley, J.Smith, A.I.Rossjohn, J.Hartland, E.L.Voskoboinik, I.Trapani, J.A.Bird, P.I.Dunstone, M.A.Whisstock, J.C.

(2007) Science 317: 1548-1551

  • DOI: 10.1126/science.1144706

  • PubMed Abstract: 
  • Proteins containing membrane attack complex/perforin (MACPF) domains play important roles in vertebrate immunity, embryonic development, and neural-cell migration. In vertebrates, the ninth component of complement and perforin form oligomeric pores t ...

    Proteins containing membrane attack complex/perforin (MACPF) domains play important roles in vertebrate immunity, embryonic development, and neural-cell migration. In vertebrates, the ninth component of complement and perforin form oligomeric pores that lyse bacteria and kill virus-infected cells, respectively. However, the mechanism of MACPF function is unknown. We determined the crystal structure of a bacterial MACPF protein, Plu-MACPF from Photorhabdus luminescens, to 2.0 angstrom resolution. The MACPF domain reveals structural similarity with poreforming cholesterol-dependent cytolysins (CDCs) from Gram-positive bacteria. This suggests that lytic MACPF proteins may use a CDC-like mechanism to form pores and disrupt cell membranes. Sequence similarity between bacterial and vertebrate MACPF domains suggests that the fold of the CDCs, a family of proteins important for bacterial pathogenesis, is probably used by vertebrates for defense against infection.


    Organizational Affiliation

    Department of Biochemistry and Molecular Biology, Monash University, Clayton, VIC 3800, Australia.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Unknown protein
A
511Photorhabdus luminescens subsp. laumondii (strain DSM 15139 / CIP 105565 / TT01)Mutation(s): 0 
Find proteins for Q7N6X0 (Photorhabdus luminescens subsp. laumondii (strain DSM 15139 / CIP 105565 / TT01))
Go to UniProtKB:  Q7N6X0
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
CA
Query on CA

Download SDF File 
Download CCD File 
A
CALCIUM ION
Ca
BHPQYMZQTOCNFJ-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

Unit Cell:
Length (Å)Angle (°)
a = 97.439α = 90.00
b = 154.507β = 90.00
c = 43.917γ = 90.00
Software Package:
Software NamePurpose
HKL-2000data collection
REFMACrefinement
PDB_EXTRACTdata extraction
DENZOdata reduction
SCALEPACKdata scaling
SOLOMONphasing
SHARPphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Revision History 

  • Version 1.0: 2007-09-04
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Advisory, Version format compliance
  • Version 1.2: 2017-10-25
    Type: Refinement description