X-ray structure at 1.55 a of toxin gamma, a cardiotoxin from naja nigricollis venom. crystal packing reveals a model for insertion into membranes

Structure

x-ray diffraction · 1 distinct chain · 0% helix, 42% strand (DSSP).

Ligands and binding sites

• CL · Chloride ion · ion · 14 copies · chains A, C, B

Binding sites are the residues within 4.5 Å of a ligand's heavy atoms.

Pockets

1 pocket found on a 1 Å grid, 1 with a druggability of 0.5 or more.

Interfaces

3 interfaces between chains.

• A–B · 522 Ų buried · 2 hydrogen bonds · protein-protein
• A–C · 266 Ų buried · 0 hydrogen bonds · protein-protein
• B–C · 240 Ų buried · 0 hydrogen bonds · protein-protein

Modifications

Observed in the structure: 12 disulfide (disulfide).

Compared structures

• 1TGX · X-ray structure at 1.55 a of toxin gamma, a cardiotoxin from naja nigricollis venom.… · the same entry in another collection · chain A against A, TM-score 1.00
• P01468 · AlphaFold monomer V2.0 prediction for cytotoxin 1 (P01468) · a predicted model of the same protein · chain C against A, TM-score 0.90

Analyse

• Open in the research workbench: secondary structure, accessibility, pockets, interfaces, conservation, variants, modifications, peptides and crosslinks on the 3D structure
• Every structure of UniProt P01468
• Elsewhere: RCSB PDB 1TGX · PDBe 1TGX · UniProt P01468