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Carbonic anhydrase XI
Symbols CA11 ; CARPX1
External IDs OMIM604644 MGI1336193 HomoloGene36061 ChEMBL: 2420 GeneCards: CA11 Gene
RNA expression pattern
PBB GE CA11 209726 at tn.png
More reference expression data
Species Human Mouse
Entrez 770 12348
Ensembl ENSG00000063180 ENSMUSG00000003273
UniProt O75493 O70354
RefSeq (mRNA) NM_001217 NM_009800
RefSeq (protein) NP_001208 NP_033930
Location (UCSC) Chr 19:
48.64 – 48.65 Mb
Chr 7:
45.7 – 45.7 Mb
PubMed search [1] [2]

Carbonic anhydrase-related protein 11 is an enzyme that in humans is encoded by the CA11 gene.[1][2]


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 XI is likely a secreted protein, however, radical changes at active site residues completely conserved in CA isozymes with catalytic activity, make it unlikely that it has carbonic anhydrase activity. It shares properties in common with two other acatalytic CA isoforms, CA VIII and CA X. CA XI is most abundantly expressed in brain, and may play a general role in the central nervous system.[2]


CA11 has been shown to interact with RIPK1.[3]


  1. ^ Lovejoy DA, Hewett-Emmett D, Porter CA, Cepoi D, Sheffield A, Vale WW, Tashian RE (Feb 1999). "Evolutionarily conserved, "acatalytic" carbonic anhydrase-related protein XI contains a sequence motif present in the neuropeptide sauvagine: the human CA-RP XI gene (CA11) is embedded between the secretor gene cluster and the DBP gene at 19q13.3". Genomics 54 (3): 484–93. doi:10.1006/geno.1998.5585. PMID 9878252.  Check date values in: |year= / |date= mismatch (help)
  2. ^ a b "Entrez Gene: CA11 carbonic anhydrase XI". 
  3. ^ Liao W, Xiao Q, Tchikov V, Fujita K, Yang W, Wincovitch S, Garfield S, Conze D, El-Deiry WS, Schütze S, Srinivasula SM (May 2008). "CARP-2 is an endosome-associated ubiquitin ligase for RIP and regulates TNF-induced NF-kappaB activation". Curr. Biol. 18 (9): 641–9. doi:10.1016/j.cub.2008.04.017. PMC 2587165. PMID 18450452. 

Further reading[edit]