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NMR Solution Structure and Model Membrane Interaction Studies of the Peptide Hylin a1 from the Arboreal South American Frog Hypsiboas albopunctatus


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 200 
  • Conformers Submitted: 10 
  • Selection Criteria: structures with the lowest energy 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Micelle Bound Structure and Model Membrane Interaction Studies of the Peptide Hylin a1 from the Arboreal South American Frog Hypsiboas albopunctatus.

Alves, E.S.Junior, E.C.Cilli, E.M.Castro, M.S.Fontes, W.de Magalhaes, M.T.Liao, L.M.de Oliveira, A.L.

(2015) Protein Pept.Lett. 22: 719-726


  • PubMed Abstract: 
  • Antimicrobial peptides (AMPs) appear as a promising therapeutic candidate against multiresistant pathogens, because they are able to kill microorganisms and have low toxicity of resistance cells. Hylin a1 (Hy-a1, IFGAILPLALGALKNLIK-NH2) is a peptide ...

    Antimicrobial peptides (AMPs) appear as a promising therapeutic candidate against multiresistant pathogens, because they are able to kill microorganisms and have low toxicity of resistance cells. Hylin a1 (Hy-a1, IFGAILPLALGALKNLIK-NH2) is a peptide extracted from the skin secretion of the frog Hypsiboas albopunctatus, which displays antimicrobial and hemolytic activities. We report here structural studies of Hy-a1 using different techniques such as fluorescence, CD and NMR. Our data showed that Hy-a1 acquires a well defined amphipathic α-helix when interacting with a membrane-like environment. Furthermore, Hy-a1 presented different affinity when compared to membranes of zwitterionic or anionic lipid composition. Finally, we proposed a molecular interaction model of this peptide with micelles.


    Organizational Affiliation

    Instituto de Química, Universidade de Brasília, Campus Universitário Darcy Ribeiro, Caixa Postal 04478, Cep: 70910-000, Asa Norte, Brasília, DF, Brasil. aloliveira@unb.br.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Hylin-a1
A
19Hypsiboas albopunctatus
Find proteins for P85982 (Hypsiboas albopunctatus)
Go to UniProtKB:  P85982
Small Molecules
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
NH2
Query on NH2
A
NON-POLYMERH2 N

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Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 200 
  • Conformers Submitted: 10 
  • 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: 2015-06-24
    Type: Initial release
  • Version 1.1: 2015-08-05
    Type: Database references