Reactivity | HuSpecies Glossary |
Format | Carrier-Free |
Source | E. coli-derived human Carbonic Anhydrase VIII/CA8 protein Ala2-Gln290, with a C-terminal 10-His tag |
Accession # | |
N-terminal Sequence | Ala2 |
Protein/Peptide Type | Recombinant Enzymes |
Gene | CA8 |
Purity | >95%, by SDS-PAGE under reducing conditions and visualized by silver stain. |
Endotoxin Note | <1.0 EU per 1 μg of the protein by the LAL method. |
Theoretical MW | 34 kDa. Disclaimer note: The observed molecular weight of the protein may vary from the listed predicted molecular weight due to post translational modifications, post translation cleavages, relative charges, and other experimental factors. |
SDS-PAGE | 38 kDa, reducing conditions |
Storage | Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
|
Buffer | Supplied as a 0.2 μm filtered solution in Tris and NaCl. |
Purity | >95%, by SDS-PAGE under reducing conditions and visualized by silver stain. |
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. CA8, also called CA‑related protein (CARP), is a cytosolic protein without CA activity (i.e., the reversible hydration of CO2) due to point mutations in the zinc-binding site (2). CA8 is expressed exclusively in Purkinje cells of the cerebellum, where it binds inositol 1,4,5-triphosphate receptor type 1 (3). CA8 overexpression in human colorectal cancer and non-small cell lung cancer indicates that it plays a role in the process of invasion in these types of malignancy (4, 5).
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