6GNZ

Plantaricin S-a in 100 mM DPC micelles. This is the alpha part of the bacteriocin plantaricin S.


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 20 
  • 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

NMR structures and mutational analysis of the two peptides constituting the bacteriocin plantaricin S.

Ekblad, B.Kristiansen, P.E.

(2019) Sci Rep 9: 2333-2333

  • DOI: 10.1038/s41598-019-38518-6
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • The structure of the individual peptides of the two-peptide bacteriocin plantaricin S, an antimicrobial peptide produced by a Lactobacillus plantarum strain, has been determined in DPC micelles. The two peptides of plantaricin S, Pls-α and Pls-β, for ...

    The structure of the individual peptides of the two-peptide bacteriocin plantaricin S, an antimicrobial peptide produced by a Lactobacillus plantarum strain, has been determined in DPC micelles. The two peptides of plantaricin S, Pls-α and Pls-β, form an α-helix from and including residue 8 to 24 with a less structured region around residue 16-19 and an amphiphilic α-helix from and including residue 7 to 23, respectively. Activity assays on single amino acid-substituted GxxxG and GxxxG-like motifs show that substituting the Ser and Gly residues in the G 9 xxxG 13 motif in Pls-α and the S 17 xxxG 21 motif in Pls-β reduced or drastically reduced the antimicrobial activity. The two-peptide bacteriocin muricidin contains GxxxG-like motifs at similar positions and displays 40-50% amino acid identity with plantaricin S. Activity assays of combinations of the peptides that constitute the bacteriocins plantaricin S and muricidin show that some combinations are highly active. Furthermore, sequence alignments show that the motifs important for plantaricin S activity align with identical motifs in muricidin. Based on sequence comparison and activity assays, a membrane-inserted model of plantaricin S in which the two peptides are oriented antiparallel relative to each other and where the GxxxG and GxxxG-like motifs important for activity come close in space, is proposed.


    Organizational Affiliation

    Department of Biosciences, University of Oslo, PO Box 1066, Blindern, NO-, 0316, Oslo, Norway. p.e.kristiansen@ibv.uio.no.,Department of Biosciences, University of Oslo, PO Box 1066, Blindern, NO-, 0316, Oslo, Norway.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Plantaricin S alpha protein
A
27Lactobacillus plantarumMutation(s): 0 
Gene Names: plsA
Find proteins for O32831 (Lactobacillus plantarum)
Go to UniProtKB:  O32831
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 20 
  • 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: 2019-03-06
    Type: Initial release
  • Version 1.1: 2019-05-08
    Type: Data collection