Gene Information
Gene NameCA9
OrganismHomo sapiens (Human)
Gene Length459
Protein NamesCarbonic anhydrase 9 (EC 4.2.1.1) (Carbonate dehydratase IX) (Carbonic anhydrase IX) (CA-IX) (CAIX) (Membrane antigen MN) (P54/58N) (Renal cell carcinoma-associated antigen G250) (RCC-associated antigen G250) (pMW1)
Target Namecarbonic anhydrase ix
Target TypeClinical trial target
Gene Age680 ( ENSG00000107159 )
Evolutionary StageEuk+Bac
AlphaFoldDBQ16790
Gene CardCA9
Uniprot IDQ16790
PfamPF00194
In ASDno
Allosteric Predictionyes (0.859164404)
Ortholog in AnimalsAlpaca_ CA9 ( ortholog_one2one )
Dog_ CA9 ( ortholog_one2one )
GuineaPig_ CA9 ( ortholog_one2one )
Macaque_ CA9 ( ortholog_one2one )
Mouse_ Car9 ( ortholog_one2one )
Pig_ CA9 ( ortholog_one2one )
Rat_ Ca9 ( ortholog_one2one )
Rabbit_ CA9 ( ortholog_one2one )
OhnologsCA12, CA14
ParalogsCA5B, CA1, CA8, CA2, CA12, CA7, CA14, CA3, CA13, CA4, CA5A, CA6, CA11, CA10
Tissuestomach
Tissue SpecificityExpressed primarily in carcinoma cells lines. Expression is restricted to very few normal tissues and the most abundant expression is found in the epithelial cells of gastric mucosa.
Pharmacological Animal ModelsNA
Gene Ontology
(biological process)
Gene Ontology
(cellular component)
Gene Ontology
(molecular function)
PDB 2HKF  (X-ray  2.01A  3IAI  (X-ray  2.20A  5DVX  (X-ray  1.60A  5FL4  (X-ray  1.82A  5FL5  (X-ray  2.05A  5FL6  (X-ray  1.95A  6FE0  (X-ray  1.91A  6FE1  (X-ray  1.95A  6FE2  (X-ray  1.87A  6G98  (X-ray  2.47A  6G9U  (X-ray  1.75A  6QN2  (X-ray  1.95A  6QN5  (X-ray  1.96A  6QN6  (X-ray  2.25A  6QUT  (X-ray  1.96A  6RQN  (X-ray  1.78A  6RQQ  (X-ray  1.28A  6RQU  (X-ray  1.39A  6RQW  (X-ray  1.49A  6TL5  (X-ray  2.21A  6TL6  (X-ray  2.15A  6Y74  (X-ray  1.53A  7POM  (X-ray  1.98A 
DBSNP rs2071676  rs3829078 
Subcellular location [CC]Nucleus {ECO:0000269|PubMed:8486430}. Nucleus, nucleolus {ECO:0000269|PubMed:8486430}. Cell membrane {ECO:0000269|PubMed:8486430};
Single-pass type I membrane protein {ECO:0000269|PubMed:8486430}. Cell projection, microvillus membrane {ECO:0000269|PubMed:8486430};
Single-pass type I membrane protein {ECO:0000269|PubMed:8486430}. Note=Found on the surface microvilli and in the nucleus, particularly in nucleolus.
Mouse PG classificationNA
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