1ICA

REFINED THREE-DIMENSIONAL STRUCTURE OF INSECT DEFENSIN A

• PDB DOI: https://doi.org/10.2210/pdb1ICA/pdb

• Classification: ANTIBACTERIAL PROTEIN
• Organism(s): Protophormia terraenovae
• Mutation(s): No 
• Membrane Protein: Yes  OPM


• Deposited: 1994-12-16 Released: 1995-07-10 
• Deposition Author(s): Cornet, B., Bonmatin, J.M., Ptak, M., Vovelle, F.

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Experimental Data Snapshot

• Method: SOLUTION NMR
• Conformers Submitted: 10 

Literature

Refined three-dimensional solution structure of insect defensin A.

Cornet, B., Bonmatin, J.M., Hetru, C., Hoffmann, J.A., Ptak, M., Vovelle, F.

(1995) Structure 3: 435-448

• PubMed: 7663941 
• DOI: https://doi.org/10.1016/s0969-2126(01)00177-0
• Primary Citation of Related Structures:  
  1ICA


• PubMed Abstract: 
  

  Insect defensin A is a basic 4 kDa protein secreted by Phormia terranovae larvae in response to bacterial challenges or injuries. Previous biological tests suggest that the bacterial cytoplasmic membrane is the target of defensin A. The structural study of this protein is the first step towards establishing a structure-activity relationship and forms the basis for understanding its antibiotic activity at the molecular level.

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Organizational Affiliation: 

Centre de Biophysique Moléculaire (CNRS), Orléans, France.

Biological Assembly 1  

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

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 4.07 kDa 
• Atom Count: 279 
• Modelled Residue Count: 40 
• Deposited Residue Count: 40 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
INSECT DEFENSIN A	A	40	Protophormia terraenovae	Mutation(s): 0  Membrane Entity: Yes
UniProt
Find proteins for P10891 (Protophormia terraenovae) Explore P10891  Go to UniProtKB:  P10891

Experimental Data & Validation

Experimental Data

• Method: SOLUTION NMR
• Conformers Submitted: 10 

Structure Validation

Entry History 

Deposition Data

• Released Date: 1995-07-10 
Deposition Author(s): Cornet, B., Bonmatin, J.M., Ptak, M., Vovelle, F.

Revision History  

• Version 1.0: 1995-07-10
  Type: Initial release
  
• Version 1.1: 2008-03-24
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2022-02-23
  Changes: Database references, Derived calculations, Other