• Species Reactivity
  Human
• Specificity
  Detects human Carbonic Anhydrase IX/CA9 in direct ELISAs.
• Source
  Monoclonal Mouse IgG_2A Clone # 303104
• Purification
  Protein A or G purified from hybridoma culture supernatant
• Immunogen
  Mouse myeloma cell line NS0-derived recombinant human Carbonic Anhydrase IX/CA9
  Pro59-Asp414
  Accession # Q16790
• Formulation
  Lyophilized from a 0.2 μm filtered solution in PBS with Trehalose. *Small pack size (SP) is supplied as a 0.2 µm filtered solution in PBS.
• Label
  Unconjugated

• Immunohistochemistry
  8-25 µg/mL
  See below

• Reconstitution
  Sterile PBS to a final concentration of 0.5 mg/mL.
• Shipping
  The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below. *Small pack size (SP) is shipped with polar packs. Upon receipt, store it immediately at -20 to -70 °C
• Stability & Storage
  Use a manual defrost freezer and avoid repeated freeze-thaw cycles.

  • 12 months from date of receipt, -20 to -70 °C as supplied.
  • 1 month, 2 to 8 °C under sterile conditions after reconstitution.
  • 6 months, -20 to -70 °C under sterile conditions after reconstitution.

• References:
  1. Pastorek, J. et al. (1994) Oncogene 9: 2877.
  2. Opavsky, R. et al. (1996) Genomics 33: 480.
  3. Hewett-Emmett, D. and R.E. Tashian (1996) Mol. Phylogenet. Evol. 5:50.
  4. Kaluzova, M. et al. (2004) Mol. Cell Biol. 24:5757.
  5. Mukouyama, H. et al. (2004) Clin. Cancer Res. 10:1421.
• Entrez Gene IDs:
  768 (Human); 230099 (Mouse)
• Alternate Names:
  CA9; CA-IX; CAIXcarbonic anhydrase 9; Carbonate dehydratase IX; Carbonic Anhydrase IX; carbonic anhydrase IXpMW1; carbonic dehydratase; EC 4.2.1.1; G250; Membrane antigen MN; MN; MNRCC-associated antigen G250; P54/58N; RCC; RCC-associated protein G250; Renal cell carcinoma-associated antigen G250

Background:

Carbonic Anhydrase (CA) catalyzes the reversible reaction of CO₂ + H₂O = HCO₃^- + H⁺, which is fundamental to many processes such as respiration, renal tubular acidification and bone resorption (1‑3). CA9, also known as membrane antigen MN and renal cell carcinoma (RCC)‑associated antigen G250, is a transmembrane enzyme expressed primarily in carcinoma cells. It is one of the best markers for hypoxia and for RCC (4, 5). The immunogen corresponds to the extracellular portion of human CA9.