1MYN

SOLUTION STRUCTURE OF DROSOMYCIN, THE FIRST INDUCIBLE ANTIFUNGAL PROTEIN FROM INSECTS, NMR, 15 STRUCTURES

• PDB DOI: https://doi.org/10.2210/pdb1MYN/pdb

• Classification: SIGNAL PROTEIN
• Organism(s): Drosophila melanogaster
• Expression System: Saccharomyces cerevisiae
• Mutation(s): No 
• Membrane Protein: Yes  OPM


• Deposited: 1996-12-26 Released: 1997-12-31 
• Deposition Author(s): Landon, C., Sodano, P., Hetru, C., Hoffmann, J.A., Ptak, M.

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Experimental Data Snapshot

• Method: SOLUTION NMR
• Conformers Calculated: 30 
• Conformers Submitted: 15 
• Selection Criteria: NUMBER OF RESIDUAL VIOLATIONS AND INTERNAL GEOMETRY 

Literature

Solution structure of drosomycin, the first inducible antifungal protein from insects.

Landon, C., Sodano, P., Hetru, C., Hoffmann, J., Ptak, M.

(1997) Protein Sci 6: 1878-1884

• PubMed: 9300487 
• DOI: https://doi.org/10.1002/pro.5560060908
• Primary Citation of Related Structures:  
  1MYN


• PubMed Abstract: 
  

  Drosomycin is the first antifungal protein characterized recently among the broad family of inducible peptides and proteins produced by insects to respond to bacterial or septic injuries. It is a small protein of 44 amino acid residues extracted from Drosophila melanogaster that exhibits a potent activity against filamentous fungi. Its three-dimensional structure in aqueous solution was determined using 1H 2D NMR. This structure, involving an alpha-helix and a twisted three-stranded beta-sheet, is stabilized by three disulfide bridges. The corresponding Cysteine Stabilized alpha beta (CS alpha beta) motif, which was found in other defense proteins such as the antibacterial insect defensin A, short- and long-chain scorpion toxins, as well as in plant thionins and potent antifungal plant defensins, appears as remarkably persistent along evolution.

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Organizational Affiliation: 

Centre de Biophysique Moléculaire (UPR 4301 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: 4.91 kDa 
• Atom Count: 336 
• Modelled Residue Count: 44 
• Deposited Residue Count: 44 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
DROSOMYCIN	A	44	Drosophila melanogaster	Mutation(s): 0  Membrane Entity: Yes
UniProt
Find proteins for P41964 (Drosophila melanogaster) Explore P41964  Go to UniProtKB:  P41964

Experimental Data & Validation

Experimental Data

• Method: SOLUTION NMR
• Conformers Calculated: 30 
• Conformers Submitted: 15 
• Selection Criteria: NUMBER OF RESIDUAL VIOLATIONS AND INTERNAL GEOMETRY 

Structure Validation

Entry History 

Deposition Data

• Released Date: 1997-12-31 
Deposition Author(s): Landon, C., Sodano, P., Hetru, C., Hoffmann, J.A., Ptak, M.

Revision History  

• Version 1.0: 1997-12-31
  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