ID Q6AXM5; PN Choline/ethanolaminephosphotransferase 1; GN Cept1; OS 10116; SL Nucleus Position: SL-0178; SL Nucleus Position: SL-0182; SL Comments: Endoplasmic reticulum membrane {ECO:0000250|UniProtKB:Q9Y6K0}; Multi-pass membrane protein {ECO:0000250|UniProtKB:Q9Y6K0}. Nucleus membrane {ECO:0000250|UniProtKB:Q9Y6K0}; Multi-pass membrane protein {ECO:0000250|UniProtKB:Q9Y6K0}. DR UNIPROT: Q6AXM5; DR Pfam: PF01066; DR PROSITE: PS00379; DE Function: Catalyzes both phosphatidylcholine and phosphatidylethanolamine biosynthesis from CDP-choline and CDP- ethanolamine, respectively. Involved in protein-dependent process of phospholipid transport to distribute phosphatidyl choline to the lumenal surface. Has a higher cholinephosphotransferase activity than ethanolaminephosphotransferase activity. {ECO:0000250|UniProtKB:Q9Y6K0}. DE Reference Proteome: Yes; GO GO:0005789; GO GO:0005794; GO GO:0016021; GO GO:0031965; GO GO:0047359; GO GO:0004142; GO GO:0004307; GO GO:0046872; GO GO:0016780; GO GO:0006656; GO GO:0006646; TP Membrane Topology: Transmembrane; Source: UniProt - Sequence Analysis {ECO:0000255}; SQ MSGHRSTRKRCGDSHPESPVGFGHMSTTGCILNKLFQLPTPPLSRHQLKRLEEHRYQSAGRSLLEPLMQGYWEWLVGRVP SQ SWIAPNLITIIGLSINICTTILLVFYCPTATEQAPLWAYIACACGLFIYQSLDAIDGKQARRTNSSSPLGELFDHGCDSL SQ STVFVVLGTCIAVQLGTNPDWMFFCCFAGTFMFYCAHWQTYVSGTLRFGIIDVTEVQIFIIIMHLLAVIGGPPFWQSMIP SQ VLNIQMKLFPALCTVAGTIFSCTNYFRVIFTGGVGKNGSTIAGTSVLSPFLHIGSVITLAVMIYKKSAVQLFEKHPCLYI SQ LTFGFVSAKITNKLVVAHMTKSEMHLHDTAFIGPALLFLDQYFNSFIDEYIVLWIALVFSFFDLIRYCVSVCNQIASHLH SQ IHVFRIKTSTAHSNHH //