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C2522 Sigma

Carbonic Anhydrase Isozyme II from bovine erythrocytes

lyophilized powder, ≥3,000 W-A units/mg protein

Synonym: Carbonate Dehydratase, Carbonate Hydrolyase, Carbonic Anhydrase II



Unit Definition

One Wilbur-Anderson (W-A) unit will cause the pH of a 0.02 M Trizma buffer to drop from 8.3 to 6.3 per min at 0 °C. (One W-A unit is essentially equivalent to one Roughton-Booth unit.)


Carbonic anhydrase from sigma has been used for the analysis of thermodynamic stability of the enzyme by measuring the binding affinity and stoichiometry. The enzyme has also been used to generate CD4+ T cell lines specific for carbonic anhydrase during the study of autoimmune pancreatitis in rat.

Biochem/physiol Actions

Carbonic anhydrase is a zinc metalloenzyme that has a molecular weight of approximately 30,000 Da. The enzyme catalyzes the hydration of carbon dioxide to carbonic acid. It is involved in many physiological and pathological processes such as pH and CO2 homeostasis, transport of bicarbonate and CO2, biosynthetic reactions, bone resorption, calcification, and tumorigenicity. Therefore, inhibitors that block this enzyme can have therapeutic implications in glaucoma, epilepsy and Parkinson′s disease.

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Safety & Documentation

Safety Information

NONH for all modes of transport
WGK Germany 


Certificate of Analysis

Certificate of Origin

Protocols & Articles


Cellular Derived Blood Proteins and Enzymes

Cell damage is induced by reactive oxygen species (ROS). ROS are either free radicals, reactive anions containing oxygen atoms, or molecules containing oxygen atoms that can either produce free radic...
BioFiles 2006, 1.5, 4.
Keywords: Aerobic, Alzheimer Disease, Bacterial conjugations, Biofiles, Cancer, Metabolism, Oxidations, Parkinson Disease, Reductions, Respiration


Enzymatic Assay of Carbonic Anhydrase for Wilbur-Anderson Units (EC

To standardize a procedure for the enzymatic assay of Carbonic Anhydrase (EC for Wilbur-Anderson Units.
Keywords: Hydration reaction, Phase transitions

Related Content

Enzymes & Proteins

Application Index | Enzyme Index | Substrate Index | Inhibitor Index | Cofactor Index | Lectin Index
Keywords: Cell signaling, Diagnostic, Drug discovery, Molecular biology

Peer-Reviewed Papers


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