Biological Assembly 1  

 3D View: Structure | 1D-3D View | Validation Report | Predict Membrane 

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

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 5.22 kDa 
• Atom Count: 355 
• Modelled Residue Count: 47 
• Deposited Residue Count: 47 
• Unique protein chains: 1

1N4N

Structure of the Plant Defensin PhD1 from Petunia Hybrida

• PDB DOI: 10.2210/pdb1N4N/pdb
• BMRB: 5612

• Classification: PLANT PROTEIN
• Organism(s): Petunia x hybrida
• Mutation(s): No 
• Membrane Protein: Yes  OPM


• Deposited: 2002-11-01 Released: 2003-11-01 
• Deposition Author(s): Janssen, B.J.C., Schirra, H.J., Lay, F.T., Anderson, M.A., Craik, D.J.

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Experimental Data Snapshot

• Method: SOLUTION NMR
• Conformers Calculated: 50 
• Conformers Submitted: 20 
• Selection Criteria: structures with the least restraint violations,structures with the lowest energy 

Literature

Structure of Petunia hybrida defensin 1, a novel plant defensin with five disulfide bonds

Janssen, B.J.C., Schirra, H.J., Lay, F.T., Anderson, M.A., Craik, D.J.

(2003) Biochemistry 42: 8214-8222

• PubMed: 12846570 
• DOI: 10.1021/bi034379o
• Primary Citation of Related Structures:  
  1N4N


• PubMed Abstract: 
  

The structure of a novel plant defensin isolated from the flowers of Petunia hybrida has been determined by (1)H NMR spectroscopy. P. hybrida defensin 1 (PhD1) is a basic, cysteine-rich, antifungal protein of 47 residues and is the first example of a new subclass of plant defensins with five disulfide bonds whose structure has been determined. PhD1 has the fold of the cysteine-stabilized alphabeta motif, consisting of an alpha-helix and a triple-stranded antiparallel beta-sheet, except that it contains a fifth disulfide bond from the first loop to the alpha-helix. The additional disulfide bond is accommodated in PhD1 without any alteration of its tertiary structure with respect to other plant defensins. Comparison of its structure with those of classic, four-disulfide defensins has allowed us to identify a previously unrecognized hydrogen bond network that is integral to structure stabilization in the family.

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Organizational Affiliation: 

Institute for Molecular Bioscience, ARC Special Research Center for Functional and Applied Genomics, The University of Queensland, Brisbane, Queensland 4072, Australia.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
floral defensin-like protein 1	A	47	Petunia x hybrida	Mutation(s): 0  Gene Names: D1 Membrane Entity: Yes
UniProt
Find proteins for Q8H6Q1 (Petunia hybrida) Explore Q8H6Q1  Go to UniProtKB:  Q8H6Q1

Experimental Data & Validation

Experimental Data

• Method: SOLUTION NMR
• Conformers Calculated: 50 
• Conformers Submitted: 20 
• Selection Criteria: structures with the least restraint violations,structures with the lowest energy 
• OLDERADO: 1N4N Olderado

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2002-11-01 
• Released Date: 2003-11-01 
Deposition Author(s): Janssen, B.J.C., Schirra, H.J., Lay, F.T., Anderson, M.A., Craik, D.J.

Revision History  

• Version 1.0: 2003-11-01
  Type: Initial release
  
• Version 1.1: 2008-04-28
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2022-02-23
  Changes: Data collection, Database references, Derived calculations