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Biochim Biophys Acta. 2013 Mar;1831(3):523-32. doi: 10.1016/j.bbalip.2012.09.009. Epub 2012 Sep 23.

Phosphatidylcholine and the CDP-choline cycle.

Author information

1
Department of Hematology, St. Jude Children's Research Hospital, Memphis, TN 38105, USA.

Abstract

The CDP-choline pathway of phosphatidylcholine (PtdCho) biosynthesis was first described more than 50 years ago. Investigation of the CDP-choline pathway in yeast provides a basis for understanding the CDP-choline pathway in mammals. PtdCho is considered as an intermediate in a cycle of synthesis and degradation, and the activity of a CDP-choline cycle is linked to subcellular membrane lipid movement. The components of the mammalian CDP-choline pathway include choline transport, choline kinase, phosphocholine cytidylyltransferase, and choline phosphotransferase activities. The protein isoforms and biochemical mechanisms of regulation of the pathway enzymes are related to their cell- and tissue-specific functions. Regulated PtdCho turnover mediated by phospholipases or neuropathy target esterase participates in the mammalian CDP-choline cycle. Knockout mouse models define the biological functions of the CDP-choline cycle in mammalian cells and tissues. This article is part of a Special Issue entitled Phospholipids and Phospholipid Metabolism.

PMID:
23010477
PMCID:
PMC3562404
DOI:
10.1016/j.bbalip.2012.09.009
[Indexed for MEDLINE]
Free PMC Article

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