Human Carbonic Anhydrase IV/CA4 Antibody Summary
Accession # P22748
Please Note: Optimal dilutions should be determined by each laboratory for each application. General Protocols are available in the Technical Information section on our website.
Detection of Human Carbonic Anhydrase IV/CA4 by Western Blot. Western blot shows lysates of human brain (cerebellum) tissue, human lung tisssue, and A549 human lung carcinoma cell line. PVDF membrane was probed with 1 µg/mL of Goat Anti-Human Carbonic Anhydrase IV/CA4 Antigen Affinity-purified Polyclonal Antibody (Catalog # AF2186) followed by HRP-conjugated Anti-Goat IgG Secondary Antibody (Catalog # HAF017). A specific band was detected for Carbonic Anhydrase IV/CA4 at approximately 33 kDa (as indicated). This experiment was conducted under reducing conditions and using Immunoblot Buffer Group 1.
Detection of Human Carbonic Anhydrase IV/CA4 by Simple WesternTM. Simple Western lane view shows lysates of human lung tissue and human kidney tissue, loaded at 0.2 mg/mL. A specific band was detected for Carbonic Anhydrase IV/CA4 at approximately 40 kDa (as indicated) using 10 µg/mL of Goat Anti-Human Carbonic Anhydrase IV/CA4 Antigen Affinity-purified Polyclonal Antibody (Catalog # AF2186) followed by 1:50 dilution of HRP-conjugated Anti-Goat IgG Secondary Antibody (Catalog # HAF109). This experiment was conducted under reducing conditions and using the 12-230 kDa separation system.
Preparation and Storage
- 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.
Background: Carbonic Anhydrase IV/CA4
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). Topics in a CA meeting (6th International Conference on the CAs, June 20‑25, 2003, Slovakia) ranged from the use of CAs as markers for tumor and hypoxia in the clinic, as a nutritional supplement in milk, and as a tool for CO2 removal and mosquito control in industry. CA4 is a GPI‑anchored membrane enzyme expressed on the luminal surfaces of pulmonary (and certain other) capillaries and of proximal renal tubules. It functions as the principal CO2 taste sensor (2). In addition, a genetic mutation (Arg 14 to Trp in the signal peptide) of CA4 was found to cosegregate with the RP17 form of retinitis pigmentosa in two large families and was not found in 36 unaffected family members or 100 controls (3).
- Hewett-Emmett, D. and R.E. Tashian (1996) Mol. Phylogenet. Evol. 5:50.
- Chandrashekar, J. et al. (2009) Science 326:443.
- Rebello, G. et al. (2004) Proc. Natl. Acad. Sci. USA 101:6617.
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