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: 4.91 kDa 
• Atom Count: 336 
• Modelled Residue Count: 44 
• Deposited Residue Count: 44 
• Unique protein chains: 1

1MYN

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

• PDB DOI: 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: 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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Related Citations: 

• Determination of the Disulfide Array of the First Inducible Antifungal Peptide from Insects: Drosomycin from Drosophila Melanogaster
  Michaut, L., Fehlbaum, P., Moniatte, M., Van Dorsselaer, A., Reichhart, J.M., Bulet, P.
  (1996) FEBS Lett 395: 6

• Insect Immunity. Septic Injury of Drosophila Induces the Synthesis of a Potent Antifungal Peptide with Sequence Homology to Plant Antifungal Peptides
  Fehlbaum, P., Bulet, P., Michaut, L., Lagueux, M., Broekaert, W.F., Hetru, C., Hoffmann, J.A.
  (1994) J Biol Chem 269: 33159

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Organizational Affiliation: 

Centre de Biophysique Moléculaire (UPR 4301 CNRS), Orléans, France.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
DROSOMYCIN	A	44	Drosophila melanogaster	Mutation(s): 0  Gene Names: Drs, CRP, CG10810 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 
• OLDERADO: 1MYN Olderado

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 1996-12-26 
• 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