1TV0 | pdb_00001tv0

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

• PDB DOI: https://doi.org/10.2210/pdb1TV0/pdb
• BMRB: 6264

• Classification: ANTIMICROBIAL PROTEIN
• Organism(s): Mus musculus
• Expression System: Escherichia coli
• Mutation(s): No 
• Membrane Protein: Yes  OPM


• Deposited: 2004-06-25 Released: 2005-01-04 
• Deposition Author(s): Jing, W., Hunter, H.N., Tanabe, H., Ouellette, A.J., Vogel, H.J.

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Experimental Data Snapshot

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

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

• PubMed: 15595831 
• DOI: https://doi.org/10.1021/bi048645p
• Primary Citation Related Structures: 
  1TV0


• 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 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.

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

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors.

Macromolecule Content 

• Total Structure Weight: 3.77 kDa 
• Atom Count: 259 
• Modeled Residue Count: 32 
• Deposited Residue Count: 32 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Cryptdin-4	A	32	Mus musculus	Mutation(s): 0  Gene Names: DEFCR4 Membrane Entity: Yes
UniProt
Find proteins for P28311 (Mus musculus) Explore P28311  Go to UniProtKB:  P28311

Experimental Data & Validation

Experimental Data

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

Structure Validation

Entry History 

Deposition Data

• Released Date: 2005-01-04 
Deposition Author(s): Jing, W., Hunter, H.N., Tanabe, H., Ouellette, A.J., Vogel, H.J.

Revision History  

• Version 1.0: 2005-01-04
  Type: Initial release
  
• Version 1.1: 2008-04-30
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2022-03-02
  Changes: Data collection, Database references, Derived calculations
• Version 1.4: 2024-10-30
  Changes: Data collection, Structure summary