IUPAC 名称
{[(4S,6S)-2,3,5-trihydroxy-4-({hydroxy[(2R)-3-(octadec-11-enoyloxy)-2-(octadeca-6,9,12-trienoyloxy)propoxy]phosphoryl}oxy)-6-(phosphonooxy)cyclohexyl]oxy}phosphonic acid
描述
PIP2(18:1(11Z)/18:3(6Z,9Z,12Z)) is a phosphatidylinositol bisphosphate. Phosphatidylinositol bisphosphates are acidic (anionic) phospholipids that consist of a phosphatidic acid backbone, linked via the phosphate group to a bisphosphorylated inositol (hexahydroxycyclohexane). Phosphatidylinositol bisphosphates are generated from phosphatidylinositols which are phosphorylated by a number of different kinases that place the phosphate moiety on positions 4 and 5 of the inositol ring, although position 3 can also be phosphorylated. Phosphatidylinositols bisphosphates can have many different combinations of fatty acids of varying lengths and saturation attached at the C-1 and C-2 positions. Fatty acids containing 18 and 20 carbons are the most common. PIP2(18:1(11Z)/18:3(6Z,9Z,12Z)), in particular, consists of one chain of vaccenic acid at the C-1 position and one chain of g-linolenic acid at the C-2 position. The vaccenic acid moiety is derived from butter fat and animal fat, while the g-linolenic acid moiety is derived from animal fats. The most important phosphatidylinositol bisphosphate in both quantitative and biological terms is phosphatidylinositol 4,5-bisphosphate. Phosphatidylinositol and the phosphatidylinositol phosphates are the main source of diacylglycerols that serve as signaling molecules, via the action of phospholipase C enzymes. Phosphatidylinositols phosphates are usually present at low levels only in tissues, typically at about 1 to 3% of the concentration of phosphatidylinositol. [HMDB]
InChI标识符
InChI=1S/C45H81O19P3/c1-3-5-7-9-11-13-15-17-19-21-23-25-27-29-31-33-38(46)59-35-37(61-39(47)34-32-30-28-26-24-22-20-18-16-14-12-10-8-6-4-2)36-60-67(57,58)64-43-40(48)41(49)44(62-65(51,52)53)45(42(43)50)63-66(54,55)56/h12-15,18,20,24,26,37,40-45,48-50H,3-11,16-17,19,21-23,25,27-36H2,1-2H3,(H,57,58)(H2,51,52,53)(H2,54,55,56)/t37-,40?,41?,42?,43+,44?,45+/m1/s1