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Human Carbonic Anhydrase VB/CA5B Antibody

Catalog # AF3176 | R&D Systems, Inc. a Bio-Techne Brand
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Key Product Details

Species Reactivity



Immunohistochemistry, Western Blot



Antibody Source

Polyclonal Goat IgG

Product Summary for Human Carbonic Anhydrase VB/CA5B Antibody


E. coli-derived recombinant human Carbonic Anhydrase VB/CA5B
Accession # Q9Y2D0


Detects human Carbonic Anhydrase VB/CA5B in direct ELISAs and Western blots. In direct ELISAs, less than 5% cross-reactivity with recombinant human (rh) CA-5A, rhCA-2, and rhCA-7 is observed.







Scientific Data Images for Human Carbonic Anhydrase VB/CA5B Antibody

Detection of Human Carbonic Anhydrase VB/CA5B antibody by Western Blot.

Detection of Human Carbonic Anhydrase VB/CA5B by Western Blot.

Western blot shows lysates of human kidney (medulla) tissue. PVDF membrane was probed with 1 µg/mL of Goat Anti-Human Carbonic Anhydrase VB/CA5B Antigen Affinity-purified Polyclonal Antibody (Catalog # AF3176) followed by HRP-conjugated Anti-Goat IgG Secondary Antibody (Catalog # HAF019). A specific band was detected for Carbonic Anhydrase VB/CA5B at approximately 32 kDa (as indicated). This experiment was conducted under reducing conditions and using Immunoblot Buffer Group 1.
Carbonic Anhydrase VB/CA5B antibody in Human Kidney by Immunohistochemistry (IHC-P).

Carbonic Anhydrase VB/CA5B in Human Kidney.

Carbonic Anhydrase VB/CA5B was detected in immersion fixed paraffin-embedded sections of human kidney using Goat Anti-Human Carbonic Anhydrase VB/ CA5B Antigen Affinity-purified Polyclonal Antibody (Catalog # AF3176) at 3 µg/mL overnight at 4 °C. Before incubation with the primary antibody, tissue was subjected to heat-induced epitope retrieval using Antigen Retrieval Reagent-Basic (Catalog # CTS013). Tissue was stained using the Anti-Goat HRP-DAB Cell & Tissue Staining Kit (brown; Catalog # CTS008) and counterstained with hematoxylin (blue). Specific staining was localized to epithelial cells in convoluted tubules. View our protocol for Chromogenic IHC Staining of Paraffin-embedded Tissue Sections.

Applications for Human Carbonic Anhydrase VB/CA5B Antibody

Recommended Usage


5-15 µg/mL
Sample: Immersion fixed paraffin-embedded sections of human kidney

Western Blot

1 µg/mL
Sample: Human kidney (medulla) tissue
Please Note: Optimal dilutions of this antibody should be experimentally determined.

Formulation, Preparation and Storage


Antigen Affinity-purified


Sterile PBS to a final concentration of 0.2 mg/mL.

Reconstitution Buffer Available:
Size / Price


Lyophilized from a 0.2 μm filtered solution in PBS with Trehalose. *Small pack size (SP) is supplied either lyophilized or as a 0.2 µm filtered solution in PBS.


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.

Background: Carbonic Anhydrase VB/CA5B

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. Carbonic Anhydrase VB encoded by the CA5B gene is a mitochondrial protein. In comparison with another mitochondrial CA (CA5A), CA5B has different tissue distribution and chromosomal location (2, 3). The amino acid sequence of human CA5B (residues 34 to 317) is 94%, 93%, 92%, and 74% identical to that of canine, mouse, bovine/rat, and chicken.


  1. Hewett-Emmett, D. and R.E. Tashian (1996) Mol. Phylogenet. Evol. 5:50.
  2. Fujikawa-Adachi, K. et al. (1999) J. Biol. Chem. 274:21228.
  3. Shah, G.N. et al. (2000) Proc. Natl. Acad. Sci. USA 97:1677.

Alternate Names


Entrez Gene IDs

11238 (Human); 302669 (Rat)

Gene Symbol



Product Documents for Human Carbonic Anhydrase VB/CA5B Antibody

Certificate of Analysis

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Note: Certificate of Analysis not available for kit components.

Product Specific Notices for Human Carbonic Anhydrase VB/CA5B Antibody

For research use only

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