CA9

Carbonic anhydrases (CAs) are a large family of zinc metalloenzymes that catalyze the reversible hydration of carbon dioxide. They participate in a variety of biological processes, including respiration, calcification, acid-base balance, bone resorption, and the formation of aqueous humor, cerebrospinal fluid, saliva, and gastric acid. They show extensive diversity in tissue distribution and in their subcellular localization. CA IX is a transmembrane protein and is one of only two tumor-associated carbonic anhydrase isoenzymes known. It is expressed in all clear-cell renal cell carcinoma, but is not detected in normal kidney or most other normal tissues. It may be involved in cell proliferation and transformation. This gene was mapped to 17q21.2 by fluorescence in situ hybridization, however, radiation hybrid mapping localized it to 9p13-p12.

carbonic anhydrase 9

Reversible hydration of carbon dioxide. Participates in pH regulation. May be involved in the control of cell proliferation and transformation. Appears to be a novel specific biomarker for a cervical neoplasia.

Bicarbonate transport Source: Reactome
Morphogenesis of an epithelium Source: Ensembl
One-carbon metabolic process Source: GO_Central
Regulation of transcription from RNA polymerase II promoter in response to hypoxia Source: Reactome
Response to drug Source: Ensembl
Response to testosterone Source: Ensembl
Secretion Source: Ensembl

Nucleus; Nucleolus; Cell membrane; Microvillus membrane. Found on the surface microvilli and in the nucleus, particularly in nucleolus.

Extracellular: 38-414 aa
Helical: 415-435 aa
Cytoplasmic: 436-459 aa

Asn-346 bears high-mannose type glycan structures.