Ceramide-1-phosphate transfer protein (Cptp)

Mediates the intracellular transfer of ceramide-1- phosphate (C1P) involving organelle membranes and the cell membrane. Required for normal structure of the Golgi stacks.

Can bind phosphoceramides with many different aliphatic chains, but has a preference for lipids with saturated C16:0 or monounsaturated C18:1 aliphatic chains, and is inefficient with phosphoceramides containing lignoceryl (C24:0). Plays a role in the regulation of the cellular levels of ceramide-1-phosphate, and thereby contributes to the regulation of phospholipase PLA2G4A activity and the release of arachidonic acid.