Biological Assembly 1  

 3D View: Structure

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

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 5.26 kDa 
• Atom Count: 358 
• Residue Count: 47 
• Unique protein chains: 1

1GPT

SOLUTION STRUCTURE OF GAMMA 1-H AND GAMMA 1-P THIONINS FROM BARLEY AND WHEAT ENDOSPERM DETERMINED BY 1H-NMR: A STRUCTURAL MOTIF COMMON TO TOXIC ARTHROPOD PROTEINS

• DOI: 10.2210/pdb1GPT/pdb

• Classification: PLANT TOXIN
• Organism(s): Hordeum vulgare
• Mutation(s): No 


• Deposited: 1992-07-29 Released: 1993-10-31 
• Deposition Author(s): Bruix, M., Jimenez, M.A., Santoro, J., Gonzalez, C., Colilla, F.J., Mendez, E., Rico, M.

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Experimental Data Snapshot

• Method: SOLUTION NMR
• Conformers Submitted: 8 

Literature

Solution structure of gamma 1-H and gamma 1-P thionins from barley and wheat endosperm determined by 1H-NMR: a structural motif common to toxic arthropod proteins.

Bruix, M., Jimenez, M.A., Santoro, J., Gonzalez, C., Colilla, F.J., Mendez, E., Rico, M.

(1993) Biochemistry 32: 715-724

• PubMed: 8380707 
• DOI: 10.1021/bi00053a041
• Primary Citation of Related Structures:  
  1GPT, 1GPS


• PubMed Abstract: 
  

The complete assignment of the proton NMR spectra of the homologous gamma 1-hordothionin and gamma 1-purothionin (47 amino acids, 4 disulfide bridges) from barley and wheat, respectively, has been performed by two-dimensional sequence-specific methods. A total of 299 proton-proton distance constraints for gamma 1-H and 285 for gamma 1-P derived from NOESY spectra have been used to calculate the three-dimensional solution structures. Initial structures have been generated by distance geometry methods and further refined by dynamical simulated annealing calculations. Both proteins show identical secondary and tertiary structure with a well-defined triple-stranded antiparallel beta-sheet (residues 1-6, 31-34, and 39-47), an alpha-helix (residues 16-28), and the corresponding connecting loops. Three disulfide bridges are located in the hydrophobic core holding together the alpha-helix and the beta-sheet and forming a cysteine-stabilized alpha-helical (CSH) motif. Moreover, a clustering of positive charges is observed on the face of the beta-sheet opposite to the helix. The three-dimensional structures of the gamma-thionins differ remarkably from plant alpha- and beta-thionins and crambin. However, they show a higher structural analogy with scorpion toxins and insect defensins which also present the CSH motif.

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Organizational Affiliation: 

Instituto de Estructura de la Materia, CSIC, Madrid, Spain.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
GAMMA-1-H THIONIN	A	47	Hordeum vulgare	Mutation(s): 0
Find proteins for P20230 (Hordeum vulgare) Explore P20230  Go to UniProtKB:  P20230

Experimental Data & Validation

Experimental Data

• Method: SOLUTION NMR
• Conformers Submitted: 8 
• OLDERADO: 1GPT Olderado

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 1992-07-29 
• Released Date: 1993-10-31 
Deposition Author(s): Bruix, M., Jimenez, M.A., Santoro, J., Gonzalez, C., Colilla, F.J., Mendez, E., Rico, M.

Revision History 

• Version 1.0: 1993-10-31
  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: 2017-11-29
  Changes: Derived calculations, Other