This gene belongs to the cytidylyltransferase family and is involved in the regulation of phosphatidylcholine biosynthesis. Mutations in this gene are associated with spondylometaphyseal dysplasia with cone-rod dystrophy. Alternatively spliced transcript variants have been found for this gene. [provided by RefSeq, Aug 2015],catalytic activity:CTP + choline phosphate = diphosphate + CDP-choline.,enzyme regulation:By phosphorylation.,function:Controls phosphatidylcholine synthesis.,pathway:Phospholipid metabolism, phosphatidylcholine biosynthesis, phosphatidylcholine from phosphocholine: step 1/2.,PTM:The serine residues of the C-terminus are phosphorylated. The inactive soluble form is stabilized by phosphorylation, the active membrane bound form is promoted by anionic lipids or diacylglycerol, and is stabilized by dephosphorylation.,similarity:Belongs to the cytidylyltransferase family.,subcellular location:It can interconvert between an inactive cytosolic form and an active membrane-bound form.,subunit:Homodimer, disulfide-linked.,
