4PH7:
reference: INTRACELLULAR TRANSPORT. Phosphatidylserine transport by ORP/Osh proteins is driven by phosphatidylinositol 4-phosphate., Moser von Filseck J, Copic A, Delfosse V, Vanni S, Jackson CL, Bourguet W, Drin G, Science. 2015 Jul 24;349(6246):432-6. doi: 10.1126/science.aab1346. Epub 2015 Jul, 23. PMID: 26206936

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