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Information on EC 1.14.11.80 - methylcytosine dioxygenase

for references in articles please use BRENDA:EC1.14.11.80

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IUBMB Comments

The TET proteins mediate iterative oxidation of 5-methylcytosine in DNA (5mc) to 5-hydroxymethylcytosine (5hmC), 5-formylcytosine (5fC), and 5-carboxylcytosine (5caC). 5fC and 5caC are recognized by EC 3.2.2.29, thymine-DNA glycosylase (TDG), which excises them, leaving an apyrimidinic site. Coupled with the base excision repair (BER) pathway, these activities result in a cytosine demethylation pathway.

The enzyme appears in viruses and cellular organisms
Reaction Schemes
5-hydroxymethylcytosine in DNA
+
+
=
5-formylcytosine in DNA
+
+
+
5-formylcytosine in DNA
+
+
=
5-carboxycytosine in DNA
+
+

Synonyms
5-methylcytosine dioxygenase, DNA methylcytosine dioxygenase, ten eleven translocation, ten-eleven translocase-2, Ten-eleven translocation, Ten-eleven translocation 2, ten-eleven translocation dioxygenase, Ten-eleven translocation protein, ten-eleven-translocation 2, ten-eleven-translocation-2, more

REACTION
REACTION DIAGRAM
COMMENTARY hide
ORGANISM
UNIPROT
LITERATURE
5-formylcytosine in DNA + 2-oxoglutarate + O2 = 5-carboxycytosine in DNA + succinate + CO2
show the reaction diagram
(3)
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-
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5-hydroxymethylcytosine in DNA + 2-oxoglutarate + O2 = 5-formylcytosine in DNA + succinate + CO2 + H2O
show the reaction diagram
(2)
-
-
-
5-methylcytosine in DNA + 2-oxoglutarate + O2 = 5-hydroxymethylcytosine in DNA + succinate + CO2
show the reaction diagram
(1)
-
-
-
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