Snake toxin Vipera berus - Venom delivery apparatus Identifiers Symbol Toxin_1 Pfam PF00087 InterPro IPR003571 PROSITE PDOC00245 SCOP 2ctx SUPERFAMILY 2ctx OPM superfamily 55 OPM protein 1txa Available protein structures: Pfam structures PDB RCSB PDB; PDBe; PDBj PDBsum structure summary