2IVW

The solution structure of a domain from the Neisseria meningitidis PilP pilot protein.


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 20 
  • Selection Criteria: LOWEST TARGET FUNCTION 

wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

The solution structure of a domain from the Neisseria meningitidis lipoprotein PilP reveals a new beta-sandwich fold.

Golovanov, A.P.Balasingham, S.Tzitzilonis, C.Goult, B.T.Lian, L.Y.Homberset, H.Tonjum, T.Derrick, J.P.

(2006) J Mol Biol 364: 186-195

  • DOI: https://doi.org/10.1016/j.jmb.2006.08.078
  • Primary Citation of Related Structures:  
    2IVW

  • PubMed Abstract: 

    Type IV pili are long, thin fibres, which extend from the surface of the bacterial pathogen Neisseria meningitidis; they play a key role in adhesion and colonisation of host cells. PilP is a lipoprotein, suggested to be involved in the assembly and stabilization of an outer membrane protein, PilQ, which is required for pilus formation. Here we describe the expression of a recombinant fragment of PilP, spanning residues 20 to 181, and determination of the solution structure of a folded domain, spanning residues 85 to 163, by NMR. The N-terminal third of the protein, from residues 20 to 84, is apparently unfolded. Protease digestion yielded a 113 residue fragment that contained the folded domain. The domain adopts a simple beta-sandwich type fold, consisting of a three-stranded beta-sheet packed against a four-stranded beta-sheet. There is also a short segment of 3(10) helix at the N-terminal part of the folded domain. We were unable to identify any other proteins that are closely related in structure to the PilP domain, although the fold appears to be distantly related to the lipocalin family. Over 40 homologues of PilP have been identified in Gram-negative bacteria and the majority of conserved residues lie within the folded domain. The fourth beta-strand and adjacent loop regions contain a high proportion of conserved residues, including three glycine residues, which seem to play a role in linking the two beta-sheets. The two beta-sheets pack together to form a crevice, lined with conserved hydrophobic residues: we suggest that this feature could act as a binding site for a small ligand. The results show that PilP and its homologues have a conserved, folded domain at the C-terminal end of the protein that may be involved in mediating binding to hydrophobic ligands.


  • Organizational Affiliation

    Faculty of Life Sciences and Manchester Interdisciplinary Biocentre, The University of Manchester, 131 Princess Street, Manchester M1 7DN, UK. A.Golovanov@manchester.ac.uk


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
PILP PILOT PROTEIN113Neisseria meningitidis Z2491Mutation(s): 0 
UniProt
Find proteins for Q7DD77 (Neisseria meningitidis serogroup B (strain MC58))
Explore Q7DD77 
Go to UniProtKB:  Q7DD77
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ7DD77
Sequence Annotations
Expand
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 20 
  • Selection Criteria: LOWEST TARGET FUNCTION 

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2007-02-13
    Type: Initial release
  • Version 1.1: 2011-05-08
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2018-05-09
    Changes: Data collection, Database references