IUPAC 名称
{[(1R,5S)-2,3,4,6-tetrahydroxy-5-({hydroxy[(2R)-2-hydroxy-3-[(2S)-3-(octadec-11-enoyloxy)-2-(octadeca-6,9,12-trienoyloxy)propoxy]propoxy]phosphoryl}oxy)cyclohexyl]oxy}phosphonic acid
描述
PIP(18:1(11Z)/18:3(6Z,9Z,12Z)) is a phosphatidylinositol phosphate. Phosphatidylinositol phosphates are acidic (anionic) phospholipids that consist of a phosphatidic acid backbone, linked via the phosphate group to a phosphorylated inositol (hexahydroxycyclohexane). Phosphatidylinositol phosphates 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 phosphates 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. PIP(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 phosphate in both quantitative and biological terms is phosphatidylinositol 4-phosphate. 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/C48H86O18P2/c1-3-5-7-9-11-13-15-17-19-21-23-25-27-29-31-33-41(50)62-38-40(64-42(51)34-32-30-28-26-24-22-20-18-16-14-12-10-8-6-4-2)37-61-35-39(49)36-63-68(59,60)66-48-45(54)43(52)44(53)47(46(48)55)65-67(56,57)58/h12-15,18,20,24,26,39-40,43-49,52-55H,3-11,16-17,19,21-23,25,27-38H2,1-2H3,(H,59,60)(H2,56,57,58)/t39-,40+,43?,44?,45?,46?,47-,48+/m1/s1