Phenol-soluble modulin Beta2

Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Submitted: 20 

wwPDB Validation   3D Report Full Report

This is version 1.5 of the entry. See complete history


Solution Structures of Phenol-Soluble Modulins alpha 1, alpha 3, and beta 2, Virulence Factors from Staphylococcus aureus.

Towle, K.M.Lohans, C.T.Miskolzie, M.Acedo, J.Z.van Belkum, M.J.Vederas, J.C.

(2016) Biochemistry 55: 4798-4806

  • DOI: https://doi.org/10.1021/acs.biochem.6b00615
  • Primary Citation of Related Structures:  
    5KGY, 5KGZ, 5KHB

  • PubMed Abstract: 

    Phenol-soluble modulins (PSMs) are peptide virulence factors produced by staphylococci. These peptides contribute to the overall pathogenicity of these bacteria, eliciting multiple immune responses from host cells. Many of the α-type PSMs exhibit cytolytic properties and are able to lyse particular eukaryotic cells, including erythrocytes, neutrophils, and leukocytes. In addition, they also appear to contribute to the protection of the bacterial cell from the host immune response through biofilm formation and detachment. In this study, three of these peptide toxins, PSMs α1, α3, and β2, normally produced by Staphylococcus aureus, have been synthesized using solid-supported peptide synthesis (SPPS) (PSMα1 and PSMα3) or made by heterologous expression in Escherichia coli (PSMβ2). Their three-dimensional structures were elucidated using nuclear magnetic resonance spectroscopy. PSMα1 and PSMα3 each consist of a single amphipathic helix with a slight bend near the N- and C-termini, respectively. PSMβ2 contains three amphipathic helices, which fold to produce a "v-like" shape between α-helix 2 and α-helix 3, with α-helix 1 folded over such that it is perpendicular to α-helix 3. The availability of three-dimensional structures permits spatial analysis of features and residues proposed to control the biological activity of these peptide toxins.

  • Organizational Affiliation

    Department of Chemistry, University of Alberta , Edmonton, Alberta, Canada T6G 2G2.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Modulin Beta244Staphylococcus aureusMutation(s): 0 
Gene Names: psm beta2AS858_01105BN1321_240017ERS093009_00604ERS179246_02032HMPREF3211_00853
Find proteins for H9BRQ4 (Staphylococcus aureus)
Explore H9BRQ4 
Go to UniProtKB:  H9BRQ4
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupH9BRQ4
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Submitted: 20 

Structure Validation

View Full Validation Report

Entry History & Funding Information

Deposition Data

Funding OrganizationLocationGrant Number
Natural Sciences and Engineering Research Council (NSERC, Canada)Canada--
Alberta Innovates Health SolutionsCanada--

Revision History  (Full details and data files)

  • Version 1.0: 2016-08-31
    Type: Initial release
  • Version 1.1: 2016-09-14
    Changes: Database references
  • Version 1.2: 2017-09-20
    Changes: Author supporting evidence, Database references, Structure summary
  • Version 1.3: 2020-01-08
    Changes: Author supporting evidence
  • Version 1.4: 2023-06-14
    Changes: Database references, Other
  • Version 1.5: 2024-05-15
    Changes: Data collection, Database references