• 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.

      R&D Systems位于美国的明尼苏达州，一直致力于生物制品的开发与生产。公司成立之初主要生产用于医院及临床应用的血控品。1997年，公司推出第一个产品--富血小板血浆质控品；1981年，公司成为全球第二家生产含血小板全血控品的供应商。40多年的发展中，R&D Systems仍持续开发各种血控品产品。  1985年，作为公司推出的第一个科研试剂产品，也是全球第一家将该产品进行商业化生产的产品，R&D Systems成功上市了TGF-beta1蛋白。作为胞外信号分子，TGF-beta1蛋白在多种细胞中进行表达，并作为胞外信号分子参与免疫功能，细胞增殖和细胞分化等生物学过程。该产品推出后，公司陆续从生物材料中纯化了几种细胞因子产品并推向市场。  天然蛋白类产品的成功推广，加速了R&D Systems在细胞因子市场的开拓。公司于1985年形成Growth Factor事业部（现Biotechnology事业部）。Biotechnology事业部的目标是生产和营销重组人细胞因子。与天然来源提取蛋白相比较，DNA重组技术生产的蛋白产品其成本更低，产量更高，完全摆脱原料的限制。1989年，Biotechnology事业部开始开发抗细胞因子的单克隆和多克隆抗体，并于1990年开发了第一个ELISA试剂盒。  2014年2月10日，R&D Systems的母公司宣布命名为Bio-Techne. Bio-Techne旗下包括R&D Systems, Novus Biologicals, BiosPacific, Tocris Bioscience, Boston Biochem和Bionostics。