Prostaglandin H2 synthasePDB ID: 1PTH
Prostaglandin H2 synthase includes two enzymes, a cyclooxygenase and a peroxidase, that together build molecules involved in pain signaling. This structure shows the enzyme after it has been modified by aspirin, blocking the cyclooxygenase active site.
The structural basis of aspirin activity inferred from the crystal structure of inactivated prostaglandin H2 synthase.
Loll, P.J., Picot, D., Garavito, R.M.
Journal: (1995) Nat.Struct.Biol. 2: 637-643