1EQ7

CORE STRUCTURE OF THE OUTER MEMBRANE LIPOPROTEIN FROM ESCHERICHIA COLI AT 1.9 ANGSTROM RESOLUTION


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.9 Å
  • R-Value Free: 0.269 
  • R-Value Work: 0.214 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Core structure of the outer membrane lipoprotein from Escherichia coli at 1.9 A resolution.

Shu, W.Liu, J.Ji, H.Lu, M.

(2000) J.Mol.Biol. 299: 1101-1112

  • DOI: 10.1006/jmbi.2000.3776

  • PubMed Abstract: 
  • The outer membrane lipoprotein of the Escherichia coli cell envelope has characteristic lipid modifications at an amino-terminal cysteine and can exist in a form bound covalently to the peptidoglycan through a carboxyl-terminal lysine. The 56-residue ...

    The outer membrane lipoprotein of the Escherichia coli cell envelope has characteristic lipid modifications at an amino-terminal cysteine and can exist in a form bound covalently to the peptidoglycan through a carboxyl-terminal lysine. The 56-residue polypeptide moiety of the lipoprotein, designated Lpp-56, folds into a stable, trimeric helical structure in aqueous solution. The 1.9 A resolution crystal structure of Lpp-56 comprises a parallel three-stranded coiled coil including a novel alanine-zipper unit and two helix-capping motifs. The amino-terminal motif forms a hydrogen-bonding network anchoring an umbrella-shaped fold. The carboxyl-terminal motif uses puckering of the tyrosine side-chains as a unique docking arrangement in helix termination. The structure provides an explanation for assembly and insertion of the lipoprotein molecules into the outer membrane of gram-negative bacteria and suggests a molecular target for antibacterial drug discovery.


    Organizational Affiliation

    Department of Biochemistry, Weill Medical College of Cornell University, New York, NY, 10021, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
OUTER MEMBRANE LIPOPROTEIN
A
56Escherichia coli (strain K12)Gene Names: lpp (mlpA, mulI)
Find proteins for P69776 (Escherichia coli (strain K12))
Go to UniProtKB:  P69776
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.9 Å
  • R-Value Free: 0.269 
  • R-Value Work: 0.214 
  • Space Group: H 3 2
Unit Cell:
Length (Å)Angle (°)
a = 34.363α = 90.00
b = 34.363β = 90.00
c = 194.135γ = 120.00
Software Package:
Software NamePurpose
SCALEPACKdata scaling
CNSrefinement
DENZOdata reduction
AMoREphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2000-06-28
    Type: Initial release
  • Version 1.1: 2008-04-27
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Derived calculations, Version format compliance