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Recombinant Human COX-2 His-tag Protein, CF

Catalog # 10465-CX | R&D Systems, Inc. a Bio-Techne Brand
Catalog #
Size / Price

Key Product Details


Sf 21 (baculovirus)

Accession #




Enzyme Activity

Product Specifications


Spodoptera frugiperda, Sf 21 (baculovirus)-derived human COX-2 protein
with a C-terminal 6-His tag


>90%, by SDS-PAGE visualized with Silver Staining and quantitative densitometry by Coomassie® Blue Staining.

Endotoxin Level

<1.0 EU per 1 μg of the protein by the LAL method.

N-terminal Sequence Analysis


Predicted Molecular Mass

68 kDa


65-71 kDa, under reducing conditions.


Measured by its ability to convert arachidonic acid to prostaglandin H2.

Scientific Data Images for Recombinant Human COX-2 His-tag Protein, CF

Recombinant Human COX-2 His-tag Protein SDS-PAGE.

2 μg/lane of Recombinant Human COX-2 His-tag Protein (Catalog # 10465-CX) was resolved with SDS-PAGE under reducing (R) and non-reducing (NR) conditions and visualized by Coomassie® Blue staining, showing bands at 65-71 kDa.

Formulation, Preparation and Storage

Formulation Supplied as a 0.2 μm filtered solution in Tris, NaCl, CHAPS and Glycerol.
Shipping The product is shipped with polar packs. Upon receipt, store it immediately at the temperature recommended below.
Stability & Storage Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
  • 6 months from date of receipt, -20 to -70 °C as supplied.
  • 3 months, -20 to -70 °C under sterile conditions after opening.

Background: COX-2

Cyclooxygenase 2 (COX-2), also known as Prostaglandin synthase 2 (PTGS2), is a dimeric, heme-dependent enzyme where the dimer is formed from two monomers each containing an N-terminal EGF-like domain, a membrane binding domain and a C-terminal catalytic domain (1). COX-2 catalyzes the conversion of arachidonate to prostaglandin H2 through a two-step reaction, representing the rate-limiting enzyme in the biosynthesis of prostanoids. Altered levels of prostaglandins are associated with several disease pathologies.  There are two major isozymes of PTGS with slightly differing substrate preferences; PTGS1 represents the constitutively expressed form while PTGS2 basal expression is present in a limited number of tissues (2) such as inflammatory cells. PTGS2 is upregulated in chronic and acute inflammation as well as in most types of cancers (3) resulting in increased rate of recurrence (4), reduction in survival (5), and increased resistance to chemo and radiotherapy (6) through the role it plays in multiple pathways and mechanisms (7). Inhibition of PTGS2 is a promising therapeutic target to reduce cancer risk (8, 9). COX-2 is a pharmacological target of nonsteroidal anti-inflammatory drugs (NSAIDS) and COX-2 selective inhibitors (coxibs) as well as other categories of inhibitors through multiple mechanisms of action (1). It remains an attractive target for novel specific inhibitor development as inhibition shows equivalent efficacy to use of conventional NSAIDs, but with reduced negative side effects (10, 11).


  1. Orlando, B.J. et al. (2015) J. Struct. Biol. 189:62.
  2. Su, C.W. et al. (2016) Crit. Rev. Oncol. Hematol. 107:33.
  3. Gurram, B. et al. (2018) Anal. Chem. 90:5187.
  4. Montezuma, M.A.P. et al. (2018) Pathol. Res. Pract. 214:907.
  5. Hoing, B. et al. (2018) Oncotarget 9:8415.
  6. Dong, X.F. et al. (2018) Clin. Cancer Res. 24:3204.
  7. Hashemi Goradel, N. et al. (2019) J. Cell Physiol. 234:5683.
  8. Brizzolara, A. et al. (2017) Cancer Letters 400:9.
  9. Shi, L. et al. (2018) ACS Appl. Mater. Interfaces 10:8555.
  10. Ferrer, M.D. et al. (2019) Curr. Med. Chem. 26:3225.
  11. Carullo, G. et al. (2016) Medchemcomm. 8:492.

Long Name

Cyclooxygenase 2

Alternate Names


Entrez Gene IDs

5743 (Human); 19225 (Mouse); 29527 (Rat)

Gene Symbol



Product Documents for Recombinant Human COX-2 His-tag Protein, CF

Certificate of Analysis

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Note: Certificate of Analysis not available for kit components.

Product Specific Notices for Recombinant Human COX-2 His-tag Protein, CF

For research use only

Setting the standard in quality research reagents