2MU7

Shortening and modifying the 1513 MSP-1 peptide's alpha-helical region induces protection against malaria


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 50 
  • Conformers Submitted: 
  • Selection Criteria: structures with the lowest energy 

wwPDB Validation 3D Report Full Report


This is version 1.0 of the entry. See complete history

Literature

Shortening and modifying the 1513 MSP-1 peptide's alpha-helical region induces protection against malaria.

Espejo, F.Bermudez, A.Torres, E.Urquiza, M.Rodriguez, R.Lopez, Y.Patarroyo, M.E.

(2004) Biochem.Biophys.Res.Commun. 315: 418-427

  • DOI: 10.1016/j.bbrc.2004.01.072

  • PubMed Abstract: 
  • Immunogenic and protective peptide sequences are of prime importance in the search for an anti-malarial vaccine. The MSP-1 conserved and semi-conserved sequences have been shown to contain red blood cell (RBC) membrane high affinity binding peptides ...

    Immunogenic and protective peptide sequences are of prime importance in the search for an anti-malarial vaccine. The MSP-1 conserved and semi-conserved sequences have been shown to contain red blood cell (RBC) membrane high affinity binding peptides (HABP). HABP 1513 sequence ((42)GYSLFQKEKMVLNEGTSGTA(61)), from this protein's N-terminal, has been shown to possess a T-epitope; however, it did not induce a humoral immune response or complete protection when evaluated in Aotus monkeys. Analogue peptides with critical binding residues replaced by amino acids with similar mass but different charge were synthesised and tested for immunogenicity and protectivity in monkey. NMR studies correlated structural behaviour with biological function. Non-immunogenic and non-protective 1513 native peptide presented a helical fragment between residues L(4) and E(14). C-terminal, 5-residue-shorter, non-immunogenic, non-protective peptide 17894 contained an alpha-helix from Q(6) to L(12) residues. Immunogenic and protective peptide 13946 presented a shorter alpha-helix between K(7) to N(13) residues. These data suggest that changing certain residues permits better peptide fit within the MHC class II-peptide-TCR complex, thus activating the immune system and inducing a protective immune response.


    Organizational Affiliation

    Fundación Instituto de Inmunología de Colombia (FIDIC), Universidad Nacional de Colombia-Bogotá, Cra. 50 No. 26-00, Bogotá, Colombia.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
1513 MSP-1 peptide
A
20Plasmodium falciparumGene Names: MSP-1
Find proteins for P04933 (Plasmodium falciparum)
Go to UniProtKB:  P04933
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 50 
  • Conformers Submitted: 
  • Selection Criteria: structures with the lowest energy 

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2014-11-12
    Type: Initial release