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2.1.3.3: ornithine carbamoyltransferase

This is an abbreviated version!
For detailed information about ornithine carbamoyltransferase, go to the full flat file.

Word Map on EC 2.1.3.3

Reaction

Carbamoyl phosphate
+
L-ornithine
=
phosphate
 +
L-citrulline

Synonyms

anabolic ornithine carbamoyltransferase, anabolic ornithine transcarbamoylase, AOTC, arcB gene product, ArgF, ArgK, aTtOTCase, carbamoyltransferase, carbamoyltransferase, ornithine, carbamylphosphate-ornithine transcarbamylase, catabolic ornithine carbamoyltransferase, catabolic ornithine transcarbamylase, citrulline phosphorylase, cOTC, L-ornithine carbamoyltransferase, L-ornithine carbamyltransferase, L-ornithine transcarbamylase, Lmo0036, MB1684, Mtb OTC, OCT, ornithine carbamoyltransferase, ornithine carbamoytransferase, ornithine carbamyl transferase, ornithine carbamyltransferase, ornithine transcarbamoylase, ornithine transcarbamylase, ornithine transcarbamylase 3, OTC, otcase, ROTCase

ECTree

     2 Transferases
         2.1 Transferring one-carbon groups
             2.1.3 Carboxy- and carbamoyltransferases
                2.1.3.3 ornithine carbamoyltransferase

Expression

Expression on EC 2.1.3.3 - ornithine carbamoyltransferase

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EXPRESSION
ORGANISM
UNIPROT
LITERATURE
CCl4 induces the enzyme in the liver
elevation in enzyme activity with increased duration of crowding is observed for all four ornithine-urea cycle enzymes examined, i.e. liver glutamine synthetase, carbamoyl phosphate synthetase III, ornithine carbamoyl transferase and arginase. By contrast, mRNA expression is variable for the ornithine-urea cycle enzymes. Results suggest that the activities of ornithine-urea cycle enzymes are better predictors for urea production than ornithine-urea cycle enzyme mRNA expression levels
-
in patients with Alzheimer's disease, ornithine carbamoyltransferase is expressed in brain, but not in controls. Ornithine carbamoyltransferase expression is strictly restricted to vascular endothelial cells. Ornithine carbamoyltransferase activity is 880% increased in the cerebrospinal fluid of probable Alzheimer's disease cases compared with controls. Rare haplotypes may be associated with the risk of Alzheimer's disease through a possible modulation of the methylation of the ornithine carbamoyltransferase promoter
-
lower enzyme expression is observed in hepatocellular carcinoma cells and tissues compared with primary human hepatocytes
-
threefold repression of enzyme formation by arginine