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Aliases for CA9 Gene

Aliases for CA9 Gene

  • Carbonic Anhydrase 9 2 3
  • Carbonic Anhydrase IX 2 3 4 5
  • Renal Cell Carcinoma-Associated Antigen G250 3 4
  • RCC-Associated Protein G250 2 3
  • RCC-Associated Antigen G250 3 4
  • Carbonate Dehydratase IX 3 4
  • Carbonic Dehydratase 2 3
  • Membrane Antigen MN 3 4
  • P54/58N 3 4
  • CA-IX 3 4
  • CAIX 3 4
  • PMW1 3 4
  • MN 3 4
  • EC 4
  • G250 4

External Ids for CA9 Gene

Previous GeneCards Identifiers for CA9 Gene

  • GC09P035986
  • GC09P035843
  • GC09P035663
  • GC09P035629

Summaries for CA9 Gene

Entrez Gene Summary for CA9 Gene

  • 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. [provided by RefSeq, Jun 2014]

GeneCards Summary for CA9 Gene

CA9 (Carbonic Anhydrase 9) is a Protein Coding gene. Diseases associated with CA9 include Kidney Cancer and Renal Cell Carcinoma. Among its related pathways are Nitrogen metabolism and Glucose / Energy Metabolism. GO annotations related to this gene include carbonate dehydratase activity. An important paralog of this gene is CA14.

UniProtKB/Swiss-Prot for CA9 Gene

  • 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.

Tocris Summary for CA9 Gene

  • Carbonic anhydrases (EC are zinc-containing enzymes belonging to the lyases family, and are primarily responsible for catalyzing the reversible hydration of carbon dioxide to form bicarbonate (HCO3-) and hydrogen (H+) ions.

Gene Wiki entry for CA9 Gene

No data available for PharmGKB "VIP" Summary , fRNAdb sequence ontologies and piRNA Summary for CA9 Gene

Genomics for CA9 Gene

Regulatory Elements for CA9 Gene

Enhancers for CA9 Gene
GeneHancer Identifier Score Enhancer Sources TSS distance (kb) Number of Genes Away Size (kb) Transcription Factor Binding Sites within enhancer Other Gene Targets for Enhancer

Enhancers around CA9 on UCSC Golden Path with GeneCards custom track

Promoters for CA9 Gene
Ensembl Regulatory Elements (ENSRs) TSS Distance (bp) Size (bp) Binding Sites for Transcription Factors within promoters

ENSRs around CA9 on UCSC Golden Path with GeneCards custom track

Genomic Location for CA9 Gene

35,673,856 bp from pter
35,681,159 bp from pter
7,304 bases
Plus strand

Genomic View for CA9 Gene

Genes around CA9 on UCSC Golden Path with GeneCards custom track

Cytogenetic band:
CA9 Gene in genomic location: bands according to Ensembl, locations according to GeneLoc (and/or Entrez Gene and/or Ensembl if different)
Genomic Location for CA9 Gene
GeneLoc Logo Genomic Neighborhood Exon StructureGene Density

RefSeq DNA sequence for CA9 Gene

Proteins for CA9 Gene

  • Protein details for CA9 Gene (UniProtKB/Swiss-Prot)

    Protein Symbol:
    Recommended name:
    Carbonic anhydrase 9
    Protein Accession:
    Secondary Accessions:
    • Q5T4R1

    Protein attributes for CA9 Gene

    459 amino acids
    Molecular mass:
    49698 Da
    Name=Zn(2+); Xref=ChEBI:CHEBI:29105;
    Quaternary structure:
    • Forms oligomers linked by disulfide bonds.

    Three dimensional structures from OCA and Proteopedia for CA9 Gene

neXtProt entry for CA9 Gene

Proteomics data for CA9 Gene at MOPED

Post-translational modifications for CA9 Gene

  • Asn-346 bears high-mannose type glycan structures.
  • Glycosylation at Thr 115 and Asn 346
  • Modification sites at PhosphoSitePlus

Other Protein References for CA9 Gene

ENSEMBL proteins:
REFSEQ proteins:

Antibody Products

  • R&D Systems Antibodies for CA9 (Carbonic Anhydrase IX/CA9)
  • Cell Signaling Technology (CST) Antibodies for CA9 (CA9)

No data available for DME Specific Peptides for CA9 Gene

Domains & Families for CA9 Gene

Gene Families for CA9 Gene

Suggested Antigen Peptide Sequences for CA9 Gene

GenScript: Design optimal peptide antigens:

Graphical View of Domain Structure for InterPro Entry



  • Belongs to the alpha-carbonic anhydrase family.
  • Belongs to the alpha-carbonic anhydrase family.
genes like me logo Genes that share domains with CA9: view

Function for CA9 Gene

Molecular function for CA9 Gene

GENATLAS Biochemistry:
carbonic anhydrase 9,MN/CA antigen expressed in Hela cells and some human carcinomas
UniProtKB/Swiss-Prot BiophysicochemicalProperties:
pH dependence: Optimum pH is 6.5. {ECO:0000269 PubMed:19805286};
UniProtKB/Swiss-Prot CatalyticActivity:
H(2)CO(3) = CO(2) + H(2)O.
UniProtKB/Swiss-Prot EnzymeRegulation:
Inhibited by coumarins, saccharin, sulfonamide derivatives such as acetazolamide (AZA) and Foscarnet (phosphonoformate trisodium salt).
UniProtKB/Swiss-Prot Function:
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.
UniProtKB/Swiss-Prot Induction:
By hypoxia.

Enzyme Numbers (IUBMB) for CA9 Gene

genes like me logo Genes that share phenotypes with CA9: view

Animal Models for CA9 Gene

MGI Knock Outs for CA9:

Animal Model Products

  • Taconic Biosciences Mouse Models for CA9

miRNA for CA9 Gene

miRTarBase miRNAs that target CA9

No data available for Gene Ontology (GO) - Molecular Function , Human Phenotype Ontology , Transcription Factor Targets and HOMER Transcription for CA9 Gene

Localization for CA9 Gene

Subcellular locations from UniProtKB/Swiss-Prot for CA9 Gene

Nucleus. Nucleus, nucleolus. Cell membrane; Single-pass type I membrane protein. Cell projection, microvillus membrane; Single-pass type I membrane protein. Note=Found on the surface microvilli and in the nucleus, particularly in nucleolus.

Subcellular locations from

Jensen Localization Image for CA9 Gene COMPARTMENTS Subcellular localization image for CA9 gene
Compartment Confidence
plasma membrane 5
nucleus 4
cytosol 3
cytoskeleton 2
extracellular 2
mitochondrion 2
endoplasmic reticulum 1
vacuole 1

No data available for Gene Ontology (GO) - Cellular Components for CA9 Gene

Pathways & Interactions for CA9 Gene

genes like me logo Genes that share pathways with CA9: view

Pathways by source for CA9 Gene

SIGNOR curated interactions for CA9 Gene

Is activated by:

Gene Ontology (GO) - Biological Process for CA9 Gene

GO ID Qualified GO term Evidence PubMed IDs
GO:0002009 morphogenesis of an epithelium IEA --
GO:0006730 one-carbon metabolic process IEA --
GO:0042493 response to drug IEA --
GO:0046903 secretion IEA --
genes like me logo Genes that share ontologies with CA9: view

Drugs & Compounds for CA9 Gene

(27) Drugs for CA9 Gene - From: DrugBank, ApexBio, HMDB, Tocris, and Novoseek

Name Status Disease Links Group Role Mechanism of Action Clinical Trials
Benzthiazide Approved Pharma Target, inhibitor 0
Hydroflumethiazide Approved Pharma Target, inhibitor 1
Zonisamide Approved, Investigational Pharma Target, inhibitor Antiepileptic with anticonvulsant and mechanistic effect 65
Topiramate Approved Pharma GluR5 receptor antagonist,anticonvulsant, GluR5 antagonist; inhibits carbonic anhydrase (CA) II and IV 242
Brinzolamide Approved Pharma CA II inhibitor 60

(18) Additional Compounds for CA9 Gene - From: Novoseek, HMDB, and Tocris

Name Synonyms Role CAS Number PubChem IDs PubMed IDs
carbon dioxide
  • Carbon oxide
  • Carbon-12 dioxide
  • Carbonic acid anhydride
  • Carbonic acid gas
  • Carbonic anhydride
Carbonic acid
  • Acid of air
  • Aerial acid
  • Bisodium carbonate
  • Calcined
  • Carbonic acid sodium salt
  • Dihydrogen oxide
  • Steam

(3) Tocris Compounds for CA9 Gene

Compound Action Cas Number
S4 High affinity and selective CA IX and CA XII inhibitor 1330061-67-0
Topiramate GluR5 antagonist; inhibits carbonic anhydrase (CA) II and IV 97240-79-4
U 104 Potent carbonic anhydrase (CA) IX and XII inhibitor 178606-66-1

(5) ApexBio Compounds for CA9 Gene

Compound Action Cas Number
Brinzolamide CA II inhibitor 138890-62-7
Dorzolamide HCl Carbonic anhydrase inhibitor 130693-82-2
Methazolamide Carbonic anhydrase inhibitor 554-57-4
Topiramate GluR5 receptor antagonist,anticonvulsant 97240-79-4
U-104 CAIX inhibitor 178606-66-1
genes like me logo Genes that share compounds with CA9: view

Transcripts for CA9 Gene

Unigene Clusters for CA9 Gene

Carbonic anhydrase IX:
Representative Sequences:

Alternative Splicing Database (ASD) splice patterns (SP) for CA9 Gene

ExUns: 1 ^ 2 ^ 3 ^ 4a · 4b · 4c ^ 5 ^ 6 ^ 7 ^ 8a · 8b ^ 9 ^ 10 ^ 11
SP2: -
SP3: -
SP4: -

Relevant External Links for CA9 Gene

GeneLoc Exon Structure for
ECgene alternative splicing isoforms for

Expression for CA9 Gene

mRNA expression in normal human tissues for CA9 Gene

mRNA differential expression in normal tissues according to GTEx for CA9 Gene

This gene is overexpressed in Stomach (x37.6).

Protein differential expression in normal tissues from HIPED for CA9 Gene

This gene is overexpressed in Stomach (44.6) and Gallbladder (14.1).

Integrated Proteomics: protein expression in normal tissues and cell lines from ProteomicsDB, PaxDb, MOPED, and MaxQB for CA9 Gene

SOURCE GeneReport for Unigene cluster for CA9 Gene Hs.63287

mRNA Expression by UniProt/SwissProt for CA9 Gene

Tissue specificity: Expressed 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.
genes like me logo Genes that share expression patterns with CA9: view

Primer Products

No data available for Protein tissue co-expression partners for CA9 Gene

Orthologs for CA9 Gene

This gene was present in the common ancestor of animals.

Orthologs for CA9 Gene

Organism Taxonomy Gene Similarity Type Details
(Bos Taurus)
Mammalia CA9 35
  • 84.94 (n)
  • 83.22 (a)
CA9 36
  • 82 (a)
(Canis familiaris)
Mammalia CA9 35
  • 85.98 (n)
  • 82.57 (a)
CA9 36
  • 82 (a)
(Mus musculus)
Mammalia Car9 35
  • 79.62 (n)
  • 73.79 (a)
Car9 16
Car9 36
  • 73 (a)
(Pan troglodytes)
Mammalia CA9 35
  • 99.34 (n)
  • 99.34 (a)
CA9 36
  • 99 (a)
(Rattus norvegicus)
Mammalia Car9 35
  • 80.69 (n)
  • 75.4 (a)
(Monodelphis domestica)
Mammalia CA9 36
  • 63 (a)
(Gallus gallus)
Aves CA9 35
  • 55.05 (n)
  • 46.97 (a)
CA9 36
  • 43 (a)
(Anolis carolinensis)
Reptilia CA9 36
  • 57 (a)
(Danio rerio)
Actinopterygii ca9 35
  • 48.08 (n)
  • 40.12 (a)
ca9 36
  • 37 (a)
fruit fly
(Drosophila melanogaster)
Insecta CG6074 37
  • 34 (a)
African malaria mosquito
(Anopheles gambiae)
Insecta AgaP_AGAP013402 35
  • 48.4 (n)
  • 40.17 (a)
sea squirt
(Ciona savignyi)
Ascidiacea CSA.8628 36
  • 17 (a)
Species with no ortholog for CA9:
  • A. gosspyii yeast (Ashbya gossypii)
  • Actinobacteria (Mycobacterium tuberculosis)
  • African clawed frog (Xenopus laevis)
  • Alicante grape (Vitis vinifera)
  • alpha proteobacteria (Wolbachia pipientis)
  • amoeba (Dictyostelium discoideum)
  • Archea (Pyrococcus horikoshii)
  • baker's yeast (Saccharomyces cerevisiae)
  • barley (Hordeum vulgare)
  • beta proteobacteria (Neisseria meningitidis)
  • bread mold (Neurospora crassa)
  • Chromalveolata (Phytophthora infestans)
  • common water flea (Daphnia pulex)
  • corn (Zea mays)
  • E. coli (Escherichia coli)
  • filamentous fungi (Aspergillus nidulans)
  • Firmicute bacteria (Streptococcus pneumoniae)
  • fission yeast (Schizosaccharomyces pombe)
  • green algae (Chlamydomonas reinhardtii)
  • honey bee (Apis mellifera)
  • K. lactis yeast (Kluyveromyces lactis)
  • loblloly pine (Pinus taeda)
  • malaria parasite (Plasmodium falciparum)
  • medicago trunc (Medicago Truncatula)
  • moss (Physcomitrella patens)
  • orangutan (Pongo pygmaeus)
  • pig (Sus scrofa)
  • platypus (Ornithorhynchus anatinus)
  • rainbow trout (Oncorhynchus mykiss)
  • rice (Oryza sativa)
  • rice blast fungus (Magnaporthe grisea)
  • schistosome parasite (Schistosoma mansoni)
  • sea anemone (Nematostella vectensis)
  • sea urchin (Strongylocentrotus purpuratus)
  • sorghum (Sorghum bicolor)
  • soybean (Glycine max)
  • stem rust fungus (Puccinia graminis)
  • sugarcane (Saccharum officinarum)
  • thale cress (Arabidopsis thaliana)
  • tomato (Lycopersicon esculentum)
  • toxoplasmosis (Toxoplasma gondii)
  • Trichoplax (Trichoplax adhaerens)
  • tropical clawed frog (Silurana tropicalis)
  • wheat (Triticum aestivum)
  • worm (Caenorhabditis elegans)

Evolution for CA9 Gene

Gene Tree for CA9 (if available)
Gene Tree for CA9 (if available)

Paralogs for CA9 Gene

Paralogs for CA9 Gene

(5) SIMAP similar genes for CA9 Gene using alignment to 1 proteins:

genes like me logo Genes that share paralogs with CA9: view

Variants for CA9 Gene

Sequence variations from dbSNP and Humsavar for CA9 Gene

SNP ID Clin Chr 09 pos Sequence Context AA Info Type
VAR_010787 -
rs3829078 - 35,679,254(+) CTTCC(A/G)ATATG nc-transcript-variant, reference, missense
rs1048638 -- 35,681,125(+) ACTGC(A/C)AAGAA nc-transcript-variant, utr-variant-3-prime
rs1243870 -- 35,680,534(+) CAAAC(A/G)GCCCT intron-variant
rs1538535 -- 35,681,302(+) TGTTC(C/T)TCCTT downstream-variant-500B

Structural Variations from Database of Genomic Variants (DGV) for CA9 Gene

Variant ID Type Subtype PubMed ID
dgv8168n71 CNV Gain 21882294
nsv466385 CNV Loss 19166990
nsv6528 CNV Insertion 18451855

Variation tolerance for CA9 Gene

Residual Variation Intolerance Score: 36.9% of all genes are more intolerant (likely to be disease-causing)
Gene Damage Index Score: 11.33; 92.64% of all genes are more intolerant (likely to be disease-causing)

No data available for Polymorphic Variants from UniProtKB/Swiss-Prot and Relevant External Links for CA9 Gene

Disorders for CA9 Gene

MalaCards: The human disease database

(15) MalaCards diseases for CA9 Gene - From: DISEASES, Novoseek, and GeneCards

Disorder Aliases PubMed IDs
kidney cancer
  • renal cell carcinoma
renal cell carcinoma
  • renal cell carcinoma, clear cell, somatic
clear cell renal cell carcinoma
  • clear-cell metastatic renal cell carcinoma
renal clear cell carcinoma
  • clear cell carcinoma of kidney
- elite association - COSMIC cancer census association via MalaCards
Search CA9 in MalaCards View complete list of genes associated with diseases

Relevant External Links for CA9

Genetic Association Database (GAD)
Human Genome Epidemiology (HuGE) Navigator
Atlas of Genetics and Cytogenetics in Oncology and Haematology:
genes like me logo Genes that share disorders with CA9: view

No data available for UniProtKB/Swiss-Prot and Genatlas for CA9 Gene

Publications for CA9 Gene

  1. CA9 gene: single nucleotide polymorphism predicts metastatic renal cell carcinoma prognosis. (PMID: 19539328) de Martino M. … Belldegrun A.S. (J. Urol. 2009) 3 23 48 67
  2. Molecular biomarkers for advanced renal cell carcinoma: implications for prognosis and therapy. (PMID: 18976937) Kim H.S. … Lim H.Y. (Urol. Oncol. 2010) 3 23
  3. Carbonic anhydrase IX expression in prostate cancer. (PMID: 20038959) Smyth L.G. … Watson R.W. (Prostate Cancer Prostatic Dis. 2010) 3 23
  4. Src induces expression of carbonic anhydrase IX via hypoxia-inducible factor 1. (PMID: 20127031) Takacova M. … Pastorek J. (Oncol. Rep. 2010) 3 23
  5. Unique biological properties of catalytic domain directed human anti-CAIX antibodies discovered through phage-display technology. (PMID: 20224781) Xu C. … Marasco W.A. (PLoS ONE 2010) 3 23

Products for CA9 Gene

Sources for CA9 Gene