At the endoplasmic reticulum (ER) membrane, active membrane-bound choline-phosphate cytidylyltransferase A (PCYT1A) or B (PCYT1B) homodimer condenses phosphocholine (PCho) and cytidine triphosphate (CTP) to produce CDP-choline (CDP-Cho) (Lykidis et al. 1998).
Murti, KG, Jackowski, S, Lykidis, A
choline-phosphate cytidylyltransferase activity of PCYT1 dimer [endoplasmic reticulum membrane]
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