1M02

NMR Structure of PW2 Bound to SDS Micelles: A Tryptophan-rich Anticocidial Peptide Selected from Phage Display Libraries


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 19 
  • Selection Criteria: structures with the lowest energy 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

NMR structure of PW2 bound to SDS micelles. A tryptophan-rich anticoccidial peptide selected from phage display libraries

Tinoco, L.W.Da Silva Jr., A.Leite, A.Valente, A.P.Almeida, F.C.

(2002) J.Biol.Chem. 277: 36351-36356

  • DOI: 10.1074/jbc.M204225200
  • Also Cited By: 2JQ2

  • PubMed Abstract: 
  • PW2 (HPLKQYWWRPSI) was selected from phage display libraries through an alternative panning method using living sporozoites of Eimeria acervulina as target. Synthetic PW2 shows anticoccidial activity against E. acervulina and Eimeria tenella with ver ...

    PW2 (HPLKQYWWRPSI) was selected from phage display libraries through an alternative panning method using living sporozoites of Eimeria acervulina as target. Synthetic PW2 shows anticoccidial activity against E. acervulina and Eimeria tenella with very low hemolytic activity. It also displays antifungal activity but no activity against bacteria. We present the solution structure of the PW2 bound to SDS micelles. In the absence of an interface, PW2 is in random coil conformation. In micelles, structural calculation shows that Trp-7 forms the hydrophobic core that is important for the peptide folding. Lys-4, Tyr-6, Trp-8, and Arg-9 are in the same surface, possibly facing the micelle interface. This possibility was supported by the fact that chemical shift differences for these residues were more pronounced when compared with PW2 in water and in SDS. PW2 gains structure upon binding to SDS micelles. Lys-4, Tyr-6, Trp-8, and Arg-9 were found to bind to the micelle. Trp-7, Trp-8, and Arg-9 composed the WW+ consensus found in the sequence of the peptides selected with the phage display technique against E. acervulina sporozoites. This suggested that Trp-7, Trp-8, and Arg-9 are probably key residues not only for the peptide interaction with SDS micelles but also for the interaction with E. acervulina sporozoites surface.


    Related Citations: 
    • Avian anticoccidial activity of a novel membrane-interactive peptide selected from phage display libraries
      da Silva Jr., A.,Kawazoe, U.,Freitas, F.F.,Gatti, M.S.,Dolder, H.,Schumacher, R.I.,Juliano, M.A.,da Silva, M.J.,Leite, A.
      (2002) MOL.BIOCHEM.PARASITOL. 120: 53


    Organizational Affiliation

    Centro Nacional de Ressonância Magnética Nuclear, Departamento de Bioquimica Médica - Instituto de Ciencias Biomedicas, Universidade Federal do Rio de Janeiro, 21941-590 - Rio de Janeiro, RJ, Brazil.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
HIS-PRO-LEU-LYS-GLN-TYR-TRP-TRP-ARG-PRO-SER-ILE
A
12N/AMutation(s): 0 
Protein Feature View is not available: No corresponding UniProt sequence found.
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 19 
  • Selection Criteria: structures with the lowest energy 
  • Olderado: 1M02 Olderado

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2002-08-14
    Type: Initial release
  • Version 1.1: 2008-04-28
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance