3HE1

Secreted protein Hcp3 from Pseudomonas aeruginosa.


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.098 Å
  • R-Value Free: 0.254 
  • R-Value Work: 0.214 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Crystal structure of secretory protein Hcp3 from Pseudomonas aeruginosa.

Osipiuk, J.Xu, X.Cui, H.Savchenko, A.Edwards, A.Joachimiak, A.

(2011) J.Struct.Funct.Genom. 12: 21-26

  • DOI: 10.1007/s10969-011-9107-1

  • PubMed Abstract: 
  • The Type VI secretion pathway transports proteins across the cell envelope of Gram-negative bacteria. Pseudomonas aeruginosa, an opportunistic Gram-negative bacterial pathogen infecting humans, uses the type VI secretion pathway to export specific ef ...

    The Type VI secretion pathway transports proteins across the cell envelope of Gram-negative bacteria. Pseudomonas aeruginosa, an opportunistic Gram-negative bacterial pathogen infecting humans, uses the type VI secretion pathway to export specific effector proteins crucial for its pathogenesis. The HSI-I virulence locus encodes for several proteins that has been proposed to participate in protein transport including the Hcp1 protein, which forms hexameric rings that assemble into nanotubes in vitro. Two Hcp1 paralogues have been identified in the P. aeruginosa genome, Hsp2 and Hcp3. Here, we present the structure of the Hcp3 protein from P. aeruginosa. The overall structure of the monomer resembles Hcp1 despite the lack of amino-acid sequence similarity between the two proteins. The monomers assemble into hexamers similar to Hcp1. However, instead of forming nanotubes in head-to-tail mode like Hcp1, Hcp3 stacks its rings in head-to-head mode forming double-ring structures.


    Organizational Affiliation

    Argonne National Laboratory, Biosciences Division, Midwest Center for Structural Genomics and Structural Biology Center, IL 60439, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Major exported Hcp3 protein
A, B, C, D, E, F
195Pseudomonas aeruginosa (strain ATCC 15692 / DSM 22644 / CIP 104116 / JCM 14847 / LMG 12228 / 1C / PRS 101 / PAO1)Mutation(s): 0 
Gene Names: hcpA, hcpB, hcpC
Find proteins for Q9HI36 (Pseudomonas aeruginosa (strain ATCC 15692 / DSM 22644 / CIP 104116 / JCM 14847 / LMG 12228 / 1C / PRS 101 / PAO1))
Go to UniProtKB:  Q9HI36
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
GOL
Query on GOL

Download SDF File 
Download CCD File 
C, F
GLYCEROL
GLYCERIN; PROPANE-1,2,3-TRIOL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
 Ligand Interaction
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
MSE
Query on MSE
A, B, C, D, E, F
L-PEPTIDE LINKINGC5 H11 N O2 SeMET
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.098 Å
  • R-Value Free: 0.254 
  • R-Value Work: 0.214 
  • Space Group: P 3 1 2
Unit Cell:
Length (Å)Angle (°)
a = 141.219α = 90.00
b = 141.219β = 90.00
c = 105.052γ = 120.00
Software Package:
Software NamePurpose
HKL-3000data reduction
PDB_EXTRACTdata extraction
SOLVEphasing
MLPHAREphasing
RESOLVEphasing
SBC-Collectdata collection
DMphasing
HKL-3000phasing
DENZOdata reduction
PHENIXrefinement
SHELXDphasing
SCALEPACKdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2009-06-16
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Non-polymer description, Version format compliance
  • Version 1.2: 2012-07-25
    Type: Database references
  • Version 1.3: 2017-11-01
    Type: Advisory, Refinement description