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  • found
  • Phosphatidylinositol per se is rarely found in prokaryotes other than the Actinomycetales , although the thermophilic α-proteobacterium Rhodothermus marinus contains dialkylether glycerophosphoinositides. (lipidhome.co.uk)
  • cellular
  • PtdIns(4,5)P2 is involved in a variety of cellular processes and is the substrate to form phosphatidylinositol 3,4,5-trisphosphate (PtdIns(3,4,5)P3), another second messenger. (uniprot.org)
  • group
  • It is an acidic (anionic) phospholipid that in essence consists of a phosphatidic acid backbone, linked via the phosphate group to inositol (hexahydroxycyclohexane). (lipidhome.co.uk)