Solution structure of the human defensin hBD-2

Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 60 
  • Conformers Submitted: 20 

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Structure Determination of Human and Murine Beta-Defensins Reveals Structural Conservation in the Absence of Significant Sequence Similarity

Bauer, F.Schweimer, K.Kluver, E.Conejo-Garcia, J.Forssmann, W.G.Roesch, P.Adermann, K.Sticht, H.

(2001) Protein Sci 10: 2470

  • DOI: https://doi.org/10.1110/ps.24401
  • Primary Citation of Related Structures:  
    1E4Q, 1E4R, 1E4S, 1E4T

  • PubMed Abstract: 

    Defensins are cationic and cysteine-rich peptides that play a crucial role in the host defense against microorganisms of many organisms by their capability to permeabilize bacterial membranes. The low sequence similarity among the members of the large mammalian beta-defensin family suggests that their antimicrobial activity is largely independent of their primary structure. To investigate to what extent these defensins share a similar fold, the structures of the two human beta-defensins, hBD-1 and hBD-2, as well as those of two novel murine defensins, termed mBD-7 and mBD-8, were determined by nuclear magnetic resonance spectroscopy. All four defensins investigated share a striking similarity on the level of secondary and tertiary structure including the lack of a distinct hydrophobic core, suggesting that the fold is mainly stabilized by the presence of three disulfide bonds. In addition to the overall shape of the molecules, the ratio of solvent-exposed polar and hydrophobic side chains is also very similar among the four defensins investigated. It is significant that beta-defensins do not exhibit a common pattern of charged and hydrophobic residues on the protein surface and that the beta-defensin-specific fold appears to accommodate a wide range of different amino acids at most sequence positions. In addition to the implications for the mode of biological defensin actions, these findings are of particular interest because beta-defensins have been suggested as lead compounds for the development of novel peptide antibiotics for the therapy of infectious diseases.

  • Organizational Affiliation

    Lehrstuhl für Biopolymere, Universität Bayreuth, D-95440 Bayreuth, Germany.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
BETA-DEFENSIN 237Homo sapiensMutation(s): 0 
UniProt & NIH Common Fund Data Resources
Find proteins for O15263 (Homo sapiens)
Explore O15263 
Go to UniProtKB:  O15263
PHAROS:  O15263
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UniProt GroupO15263
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 60 
  • Conformers Submitted: 20 

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2001-07-12
    Type: Initial release
  • Version 1.1: 2011-05-08
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance