Ethanolamine-phosphate cytidylyltransferase () is an enzyme that catalyzes the chemical reaction
The enzyme characterised from rat liver combines cytidine triphosphate and phosphorylethanolamine to give cytidine diphosphate ethanolamine (CDP-ethanolamine), with pyrophosphate (PPi) as a byproduct.
This enzyme is a transferase, specifically one transferring phosphorus-containing nucleotide groups (nucleotidyltransferases). The systematic name of this enzyme class is CTP:ethanolamine-phosphate cytidylyltransferase. Other names in common use include phosphorylethanolamine transferase, ET, CTP-phosphoethanolamine cytidylyltransferase, phosphoethanolamine cytidylyltransferase, and ethanolamine phosphate cytidylyltransferase.
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