ChEBI: 1-hexadecanoyl-2-(9Z,12Z-octadecadienoyl)-sn-glycero-3-phosphoethanolamine zwitterion is a phosphatidylethanolamine 34:2 zwitterion obtained by transfer of a proton from the phosphate to the amino group of 1-hexadecanoyl-2-(9Z,12Z-octadecadienoyl)-sn-glycero-3-phosphoethanolamine. It is a tautomer of a 1-hexadecanoyl-2-(9Z,12Z-octadecadienoyl)-sn-glycero-3-phosphoethanolamine.