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Information on EC 4.2.1.1 - carbonic anhydrase

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EC Tree
     4 Lyases
         4.2 Carbon-oxygen lyases
             4.2.1 Hydro-lyases
                4.2.1.1 carbonic anhydrase
IUBMB Comments
The enzyme catalyses the reversible hydration of gaseous CO2 to carbonic acid, which dissociates to give hydrogencarbonate above neutral pH. It is widespread and found in archaea, bacteria, and eukaryotes. Three distinct classes exist, and appear to have evolved independently. Contains zinc.
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UNIPROT: Q5U9J1
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Word Map
The enzyme appears in viruses and cellular organisms
Reaction Schemes
Synonyms
carbonic anhydrase, ca ix, ca ii, hca ii, hca i, carbonic anhydrase ix, carbonic anhydrase ii, hca ix, ca iv, anhydrase, more
SYNONYM
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
delta carbonic anhydrase
-
delta-carbonic anhydrase
-
anhydrase
-
-
-
-
CA
-
-
-
-
CA-IX
-
-
-
-
CA-VA
-
-
-
-
CA-VB
-
-
-
-
CA-VI
-
-
-
-
CA-VII
-
-
-
-
CA-XII
-
-
-
-
CA-XIV
-
-
-
-
CA1
-
-
-
-
CA2
-
-
-
-
CAIX
-
-
-
-
carbonate anhydrase
-
-
-
-
Carbonate dehydratase
-
-
-
-
Carbonate dehydratase IX
-
-
-
-
Carbonate dehydratase VA
-
-
-
-
Carbonate dehydratase VB
-
-
-
-
Carbonate dehydratase VI
-
-
-
-
Carbonate dehydratase VII
-
-
-
-
Carbonate dehydratase XII
-
-
-
-
Carbonate dehydratase XIV
-
-
-
-
carbonic acid anhydrase
-
-
-
-
carbonic anhydrase
-
-
-
-
carbonic dehydratase
-
-
-
-
carboxyanhydrase
-
-
-
-
dehydratase, carbonate
-
-
-
-
Membrane antigen MN
-
-
-
-
P54/58N
-
-
-
-
pMW1
-
-
-
-
RCC-associated antigen G250
-
-
-
-
Renal cell carcinoma-associated antigen G250
-
-
-
-
Salivary carbonic anhydrase
-
-
-
-
Secreted carbonic anhydrase
-
-
-
-
Tumor antigen HOM-RCC-3.1.3
-
-
-
-
REACTION TYPE
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
elimination
-
-
-
-
addition
-
-
-
-
PATHWAY SOURCE
PATHWAYS
-
-, -, -, -, -, -, -, -, -
SYSTEMATIC NAME
IUBMB Comments
carbonic acid hydro-lyase (carbon-dioxide-forming)
The enzyme catalyses the reversible hydration of gaseous CO2 to carbonic acid, which dissociates to give hydrogencarbonate above neutral pH. It is widespread and found in archaea, bacteria, and eukaryotes. Three distinct classes exist, and appear to have evolved independently. Contains zinc.
CAS REGISTRY NUMBER
COMMENTARY hide
9001-03-0
-
SUBSTRATE
PRODUCT                       
REACTION DIAGRAM
ORGANISM
UNIPROT
COMMENTARY
(Substrate) hide
LITERATURE
(Substrate)
COMMENTARY
(Product) hide
LITERATURE
(Product)
Reversibility
r=reversible
ir=irreversible
?=not specified
CO2 + H2O
H2CO3
show the reaction diagram
-
-
-
r
H2CO3
CO2 + H2O
show the reaction diagram
-
-
-
r
additional information
?
-
NATURAL SUBSTRATE
NATURAL PRODUCT
REACTION DIAGRAM
ORGANISM
UNIPROT
COMMENTARY
(Substrate) hide
LITERATURE
(Substrate)
COMMENTARY
(Product) hide
LITERATURE
(Product)
REVERSIBILITY
r=reversible
ir=irreversible
?=not specified
H2CO3
CO2 + H2O
show the reaction diagram
-
-
-
r
METALS and IONS
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
Zn2+
required, metalloenzyme
TURNOVER NUMBER [1/s]
SUBSTRATE
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
IMAGE
130000
CO2
measured with hydration of CO2 activity assay, pH 7.5-8.3, 0°C
kcat/KM VALUE [1/mMs-1]
SUBSTRATE
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
IMAGE
33000
CO2
measured with hydration of CO2 activity assay, pH 7.5-8.3, 0°C
pH OPTIMUM
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
TEMPERATURE OPTIMUM
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
ORGANISM
COMMENTARY hide
LITERATURE
UNIPROT
SEQUENCE DB
SOURCE
GENERAL INFORMATION
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
evolution
several genetically distinct classes of carbonic anhydrase (CAs) exist, e.g. alpha-, beta-, gamma-, delta- and zeta-, and all of them are metalloenzymes. delta-CAs are closer to the alpha-CAs than to the other classes of the enzymes, phylogenetic analysis
physiological function
carbonic anhydrases are key enzymes involved in the acquisition of inorganic carbon for photosynthesis in phytoplankton, as they catalyze efficiently the interconversion between carbon dioxide and bicarbonate
UNIPROT
ENTRY NAME
ORGANISM
NO. OF AA
NO. OF TRANSM. HELICES
MOLECULAR WEIGHT[Da]
SOURCE
SEQUENCE
LOCALIZATION PREDICTION?
Q5U9J1_THAWE
281
0
32274
TrEMBL
-
TEMPERATURE STABILITY
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
80
purified recombinant His-tagged enzyme, pH 8.3, 40% activity remaining after 30 min, complete inactivation after 60 min
PURIFICATION (Commentary)
ORGANISM
UNIPROT
LITERATURE
recombinant His-tagged enzyme from Escherichia coli by nickel affinity chromatagraphy
CLONED (Commentary)
ORGANISM
UNIPROT
LITERATURE
gene ca1, encoding delta-CA, sequence comparisons, phylogenetic analysis, recombinant His-tagged enzyme expression in Escherichia coli
REF.
AUTHORS
TITLE
JOURNAL
VOL.
PAGES
YEAR
ORGANISM (UNIPROT)
PUBMED ID
SOURCE
Del Prete, S.; Vullo, D.; De Luca, V.; Supuran, C.T.; Capasso, C.
Biochemical characterization of the delta-carbonic anhydrase from the marine diatom Thalassiosira weissflogii, TweCA
J. Enzyme Inhib. Med. Chem.
29
906-911
2014
Conticribra weissflogii (Q5U9J1), Conticribra weissflogii
Manually annotated by BRENDA team