KM for arachidonate = 6.5 μM. Exhibits activity and sensitivity to NSAIDs similar to the non-tagged enzyme.
Biochem/physiol Actions
COX-2 catalyzes the conversion of arachidonic acid to prostaglandin H2 (the first step in the biosynthesis of prostaglandins, thromboxanes, and prostacyclins). It is the inducible form of cyclooxygenase, induced by phorbol esters, lipopolysaccharides, and cytokines. COX-2 is upregulated in the neovasculature of malignant tumors. Inhibition of COX-2 with nonsteroidal anti-inflammatory drugs (NSAIDs) is associated with decreased tumor growth.
Physical form
Solution in 80 mM Tris, pH 8.0, with 0.3 mM DDC, 0.01% TWEEN® 20 and 10% glycerol
Other Notes
One unit will consume 1.0 nanomole of oxygen per minute at pH 8 at 37 °C.
Tagged with a six-residue histidine sequence near the N-terminus.
Legal Information
TWEEN is a registered trademark of Croda International PLC