2QF4

High resolution structure of the major periplasmic domain from the cell shape-determining filament MreC (orthorhombic form)

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.20 Å
  • R-Value Free: 0.167 
  • R-Value Work: 0.144 
  • R-Value Observed: 0.145 

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This is version 1.1 of the entry. See complete history. 


Literature

High-resolution Structure of the Major Periplasmic Domain from the Cell Shape-determining Filament MreC.

Lovering, A.L., Strynadka, N.C.

(2007) J Mol Biol 372: 1034-1044

  • DOI: 10.1016/j.jmb.2007.07.022
  • Primary Citation of Related Structures:  
    2QF4, 2QF5

  • PubMed Abstract: 

    • Bacterial cell shape is dictated by the cell wall, a plastic structure that must adapt to growth and division whilst retaining its function as a selectively permeable barrier. The modulation of cell wall structure is achieved by a variety of enzymatic functions, all of which must be spatially regulated in a precise manner ...

    Bacterial cell shape is dictated by the cell wall, a plastic structure that must adapt to growth and division whilst retaining its function as a selectively permeable barrier. The modulation of cell wall structure is achieved by a variety of enzymatic functions, all of which must be spatially regulated in a precise manner. The membrane-spanning essential protein MreC has been identified as the central hub in this process, linking the bacterial cytoskeleton to a variety of cell wall-modifying enzymes. Additionally, MreC can form filaments, believed to run perpendicularly to the membrane. We present here the 1.2 A resolution crystal structure of the major periplasmic domain of Streptococcus pneumoniae MreC. The protein shows a novel arrangement of two barrel-shaped domains, one of which shows homology to a known protein oligomerization motif, with the other resembling a catalytic domain from a bacterial protease. We discuss the implications of these results for MreC function, and detail the structural features of the molecule that may be responsible for the binding of partner proteins.

    Organizational Affiliation: 

    Department of Biochemistry and Molecular Biology and Center for Blood Research, The University of British Columbia, Vancouver, Canada V6T 1R9. Electronic address: natalie@byron.biochem.ubc.ca.



Macromolecules
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(by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Cell shape determining protein MreCA, B172Streptococcus pneumoniae R6Mutation(s): 0 
Gene Names: mreC, spr2023
UniProt
Find proteins for Q8DMY2 (Streptococcus pneumoniae (strain ATCC BAA-255 / R6))
Explore Q8DMY2 
Go to UniProtKB:  Q8DMY2
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ8DMY2
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4
Download Ideal Coordinates CCD File 
F [auth B]SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L		 Ligand Interaction
EDO
Query on EDO
Download Ideal Coordinates CCD File 
C [auth A],
D [auth A],
E [auth A]		1,2-ETHANEDIOL
C2 H6 O2
LYCAIKOWRPUZTN-UHFFFAOYSA-N		 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.20 Å
  • R-Value Free: 0.167 
  • R-Value Work: 0.144 
  • R-Value Observed: 0.145 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 50.247α = 90
b = 70.362β = 90
c = 89.763γ = 90
Software Package:
Software NamePurpose
SCALAdata scaling
REFMACrefinement
PDB_EXTRACTdata extraction
ADSCdata collection
MOSFLMdata reduction
SOLVEphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2007-08-07
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Source and taxonomy, Version format compliance