1KFP

Solution structure of the antimicrobial 18-residue gomesin

• PDB DOI: https://doi.org/10.2210/pdb1KFP/pdb

• Classification: ANTIBIOTIC
• Organism(s): Acanthoscurria gomesiana
• Mutation(s): No 
• Membrane Protein: Yes  OPM


• Deposited: 2001-11-22 Released: 2002-04-10 
• Deposition Author(s): Mandard, N., Bulet, P., Caille, A., Daffre, S., Vovelle, F.

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Experimental Data Snapshot

• Method: SOLUTION NMR
• Conformers Calculated: 200 
• Conformers Submitted: 20 
• Selection Criteria: structures with acceptable covalent geometry,structures with favorable non-bond energy,structures with the least restraint violations,structures with the lowest energy 

Literature

The solution structure of gomesin, an antimicrobial cysteine-rich peptide from the spider.

Mandard, N., Bulet, P., Caille, A., Daffre, S., Vovelle, F.

(2002) Eur J Biochem 269: 1190-1198

• PubMed: 11856345 
• DOI: https://doi.org/10.1046/j.0014-2956.2002.02760.x
• Primary Citation of Related Structures:  
  1KFP


• PubMed Abstract: 
  

  Gomesin is the first peptide isolated from spider exhibiting antimicrobial activities. This highly cationic peptide is composed of 18 amino-acid residues including four cysteines forming two disulfide linkages. The solution structure of gomesin has been determined using proton two-dimensional NMR (2D-NMR) and restrained molecular dynamics calculations. The global fold of gomesin consists in a well-resolved two-stranded antiparallel betasheet connected by a noncanonical betaturn. A comparison between the structures of gomesin and protegrin-1 from porcine and androctonin from scorpion outlines several common features in the distribution of hydrophobic and hydrophilic residues. The N- and C-termini, the betaturn and one face of the betasheet are hydrophilic, but the hydrophobicity of the other face depends on the peptide. The similarities suggest that the molecules interact with membranes in an analogous manner. The importance of the intramolecular disulfide bridges in the biological activity of gomesin is being investigated.

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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: 2.28 kDa 
• Atom Count: 156 
• Modelled Residue Count: 19 
• Deposited Residue Count: 19 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
GOMESIN	A	19	Acanthoscurria gomesiana	Mutation(s): 0  Membrane Entity: Yes
UniProt
Find proteins for P82358 (Acanthoscurria gomesiana) Explore P82358  Go to UniProtKB:  P82358

Small Molecules

Modified Residues  1 Unique
ID	Chains	Type	Formula	2D Diagram	Parent
PCA	A	L-PEPTIDE LINKING	C5 H7 N O3		GLN

Experimental Data & Validation

Experimental Data

• Method: SOLUTION NMR
• Conformers Calculated: 200 
• Conformers Submitted: 20 
• Selection Criteria: structures with acceptable covalent geometry,structures with favorable non-bond energy,structures with the least restraint violations,structures with the lowest energy 

Structure Validation

Entry History 

Deposition Data

• Released Date: 2002-04-10 
Deposition Author(s): Mandard, N., Bulet, P., Caille, A., Daffre, S., Vovelle, F.

Revision History  

• Version 1.0: 2002-04-10
  Type: Initial release
  
• Version 1.1: 2008-04-27
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 2.0: 2019-12-25
  Changes: Database references, Derived calculations, Polymer sequence, Source and taxonomy