ID 2.7.8.48 DE ceramide phosphoethanolamine synthase. AN CPE synthase. CA (1) CDP-ethanolamine + an N-acyl-sphingoid base = an N-acyl-sphingoid CA 1-phosphoethanolamine + CMP + H(+). CA (2) an N-acylsphing-4-enine + a 1,2-diacyl-sn-glycero-3- CA phosphoethanolamine = an N-acylsphing-4-enine 1-phosphoethanolamine + CA a 1,2-diacyl-sn-glycerol. CC -!- The enzyme from invertebrates, best studied from the fly Drosophila CC melanogaster, is common in arthropods, worms, bees, spiders, CC and scorpions, and has also been reported in deep-sea mussels and CC some sea snails, as well as protozoans and oomycetes. CC -!- Its product, ceramide phosphoethanolamine, is synthesized as the main CC sphingolipid in cell membranes of arthropods, such as Drosophila and CC Musca. CC -!- The invertebrate enzyme requires a Mn(II) cofactor. CC -!- In mammals the activity has been shown to be catalyzed by members of CC the EC 2.7.8.27 family, such as SGMS1, SGMS2, and SAMD8. CC -!- Formerly EC 2.7.8.n3. DR O77475, CPESY_DROME; //