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3D Print of Shiga Toxin

$36.46$696.16 $36.46$676.00

This is a 3D print of Shiga Toxin (Stk1) created from protein dataset 1DM0  This model is colored by protein chain. The 5 blue chains are the membrane binding domains and the red the cytotoxic compounds.

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Product Description

Protein Description

Shigella dysenteriae is the pathogen responsible for the severe form of dysentery in humans. It produces Shiga toxin, the prototype of a family of closely related bacterial protein toxins. We have determined the structure of the holotoxin, an AB5 hexamer, by X-ray crystallography. The five B subunits form a pentameric ring, encircling a helix at the carboxy terminus of the A subunit. The A subunit interacts with the B pentamer via this C-terminal helix and a four-stranded mixed beta-sheet. The fold of the rest of the A subunit is similar to that of the A chain of the plant toxin ricin; both are N-glycosidases. However, the active site in the bacterial holotoxin is blocked by a segment of polypeptide chain. These residues of the A subunit would be released as part of the activation mechanism of the toxin.

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