1TV0

Solution structure of cryptdin-4, the most potent alpha-defensin from mouse Paneth cells


Experimental Data Snapshot

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

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Solution Structure of Cryptdin-4, a Mouse Paneth Cell alpha-Defensin.

Jing, W.Hunter, H.N.Tanabe, H.Ouellette, A.J.Vogel, H.J.

(2004) Biochemistry 43: 15759-15766

  • DOI: 10.1021/bi048645p

  • PubMed Abstract: 
  • Mammalian defensins are abundant antimicrobial peptides that contribute to host defense. They are characterized by several conserved amino acids, including six invariant cysteine residues which form three intramolecular disulfide bonds and stabilize ...

    Mammalian defensins are abundant antimicrobial peptides that contribute to host defense. They are characterized by several conserved amino acids, including six invariant cysteine residues which form three intramolecular disulfide bonds and stabilize the tertiary structure. Cryptdin-4 (Crp4), a mouse alpha-defensin with potent in vitro bactericidal activity, has a primary structure distinct from all known alpha-defensins in that its polypeptide backbone uniquely lacks three residues between Cys(IV) and Cys(V). NMR diffusion experiments showed that Crp4 is monomeric in solution, and its three-dimensional solution structure, determined by two-dimensional proton NMR, consists of a triple-stranded antiparallel beta-sheet with the beta-strands joined to each other by a series of tight turns and a beta-hairpin. However, the overall beta-sheet content in Crp4 is lower than that of other alpha-defensin structures, while the shape and orientation of the Crp4 beta-hairpin also differ from those of other alpha-defensin structures. These structural characteristics combined with the high overall cationicity of Crp4 may contribute to its broad bactericidal spectrum and membrane disruptive activity.


    Organizational Affiliation

    Structural Biological Research Group, Department of Biological Sciences, University of Calgary, Calgary, Alberta T2N 1N4, Canada.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Cryptdin-4
A
32Mus musculusMutation(s): 0 
Gene Names: Defa4 (Defcr4)
Find proteins for P28311 (Mus musculus)
Go to UniProtKB:  P28311
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 20 
  • Olderado: 1TV0 Olderado

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2005-01-04
    Type: Initial release
  • Version 1.1: 2008-04-30
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance