4N58

Crystal Structure of Pectocin M2 at 1.86 Angstroms


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.86 Å
  • R-Value Free: 0.197 
  • R-Value Work: 0.168 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Structure of the atypical bacteriocin pectocin M2 implies a novel mechanism of protein uptake.

Grinter, R.Josts, I.Zeth, K.Roszak, A.W.McCaughey, L.C.Cogdell, R.J.Milner, J.J.Kelly, S.M.Byron, O.Walker, D.

(2014) Mol.Microbiol. 93: 234-246

  • DOI: 10.1111/mmi.12655
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • The colicin-like bacteriocins are potent protein antibiotics that have evolved to efficiently cross the outer membrane of Gram-negative bacteria by parasitizing nutrient uptake systems. We have structurally characterized the colicin M-like bacterioci ...

    The colicin-like bacteriocins are potent protein antibiotics that have evolved to efficiently cross the outer membrane of Gram-negative bacteria by parasitizing nutrient uptake systems. We have structurally characterized the colicin M-like bacteriocin, pectocin M2, which is active against strains of Pectobacterium spp. This unusual bacteriocin lacks the intrinsically unstructured translocation domain that usually mediates translocation of these bacteriocins across the outer membrane, containing only a single globular ferredoxin domain connected to its cytotoxic domain by a flexible α-helix, which allows it to adopt two distinct conformations in solution. The ferredoxin domain of pectocin M2 is homologous to plant ferredoxins and allows pectocin M2 to parasitize a system utilized by Pectobacterium to obtain iron during infection of plants. Furthermore, we identify a novel ferredoxin-containing bacteriocin pectocin P, which possesses a cytotoxic domain homologous to lysozyme, illustrating that the ferredoxin domain acts as a generic delivery module for cytotoxic domains in Pectobacterium.


    Organizational Affiliation

    Institute of Infection, Immunity and Inflammation, University of Glasgow, Glasgow, G12 8QQ, UK.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Pectocin M2
A, B
279Pectobacterium carotovorum subsp. brasiliensis PBR1692Mutation(s): 0 
Find proteins for A0A067XG75 (Pectobacterium carotovorum subsp. brasiliensis PBR1692)
Go to UniProtKB:  A0A067XG75
Small Molecules
Ligands 5 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4

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

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A
CHLORIDE ION
Cl
VEXZGXHMUGYJMC-UHFFFAOYSA-M
 Ligand Interaction
GOL
Query on GOL

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A, B
GLYCEROL
GLYCERIN; PROPANE-1,2,3-TRIOL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
 Ligand Interaction
FES
Query on FES

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Download CCD File 
A, B
FE2/S2 (INORGANIC) CLUSTER
Fe2 S2
NIXDOXVAJZFRNF-UHFFFAOYSA-N
 Ligand Interaction
MPD
Query on MPD

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Download CCD File 
A, B
(4S)-2-METHYL-2,4-PENTANEDIOL
C6 H14 O2
SVTBMSDMJJWYQN-YFKPBYRVSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.86 Å
  • R-Value Free: 0.197 
  • R-Value Work: 0.168 
  • Space Group: P 31 2 1
Unit Cell:
Length (Å)Angle (°)
a = 117.450α = 90.00
b = 117.450β = 90.00
c = 128.450γ = 120.00
Software Package:
Software NamePurpose
XDSdata reduction
PHENIXmodel building
REFMACrefinement
PHENIXphasing
xia2data scaling
XDSdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2014-06-04
    Type: Initial release
  • Version 1.1: 2014-08-13
    Type: Database references