2AIZ

Solution structure of peptidoglycan associated lipoprotein from Haemophilus influenza bound to UDP-N-acetylmuramoyl-L-alanyl-D-glutamyl-meso-2,6-diaminopimeloyl-D-alanyl-D-alanine


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 20 
  • Selection Criteria: structures with the least restraint violations 

wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

Peptidoglycan recognition by pal, an outer membrane lipoprotein.

Parsons, L.M.Lin, F.Orban, J.

(2006) Biochemistry 45: 2122-2128

  • DOI: 10.1021/bi052227i
  • Primary Citation of Related Structures:  
    2AIZ

  • PubMed Abstract: 
  • Peptidoglycan-associated lipoprotein (Pal) is a potential vaccine candidate from Haemophilus influenzae that is highly conserved in Gram-negative bacteria and anchored to the outer membrane through an N-terminal lipid attachment. Pal stabilizes the outer membrane by providing a noncovalent link to the peptidoglycan (PG) layer through a periplasmic domain ...

    Peptidoglycan-associated lipoprotein (Pal) is a potential vaccine candidate from Haemophilus influenzae that is highly conserved in Gram-negative bacteria and anchored to the outer membrane through an N-terminal lipid attachment. Pal stabilizes the outer membrane by providing a noncovalent link to the peptidoglycan (PG) layer through a periplasmic domain. Using NMR spectroscopy, we determined the three-dimensional structure of a complex between the periplasmic domain of Pal and a biosynthetic peptidoglycan precursor (PG-P), UDP-N-acetylmuramyl-L-Ala-alpha-d-Glu-m-Dap-D-Ala-d-Ala (m-Dap is meso-diaminopimelate). Pal has a binding pocket lined with conserved surface residues that interacts exclusively with the peptide portion of the ligand. The m-Dap residue, which is mainly found in the cell walls of Gram-negative bacteria, is sequestered in this pocket and plays an important role by forming hydrogen bond and hydrophobic contacts to Pal. The structure provides insight into the mode of cell wall recognition for a broad class of Gram-negative membrane proteins, including OmpA and MotB, which have peptidoglycan-binding domains homologous to that of Pal.


    Organizational Affiliation

    Center for Advanced Research in Biotechnology, University of Maryland Biotechnology Institute, 9600 Gudelsky Drive, Rockville, Maryland 20850, USA.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Outer membrane protein P6 P134Haemophilus influenzaeMutation(s): 0 
Gene Names: palompP6
Find proteins for P10324 (Haemophilus influenzae (strain ATCC 51907 / DSM 11121 / KW20 / Rd))
Explore P10324 
Go to UniProtKB:  P10324
Protein Feature View
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  • Reference Sequence
  • Find similar proteins by:  Sequence   |   Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
UDP-N-acetylmuramoyl-L-alanyl-D-glutamyl-meso-2,6-diaminopimeloyl-D-alanyl-D-alanine U7N/AMutation(s): 0 
Protein Feature View
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  • Reference Sequence
Small Molecules
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
6CL
Query on 6CL
UL-PEPTIDE LINKINGC7 H15 N2 O4LYS
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 20 
  • Selection Criteria: structures with the least restraint violations 
  • OLDERADO: 2AIZ Olderado

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2006-03-14
    Type: Initial release
  • Version 1.1: 2008-04-30
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2020-07-29
    Type: Remediation
    Reason: Carbohydrate remediation
    Changes: Data collection, Derived calculations, Structure summary