IUPAC 名称
{[(1R,5S)-2,3,4,6-tetrahydroxy-5-({hydroxy[(2R)-2-(octadeca-6,9,12-trienoyloxy)-3-(octadecanoyloxy)propoxy]phosphoryl}oxy)cyclohexyl]oxy}phosphonic acid
描述
PIP(18:0/18:3(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(18:0/18:3(6Z,9Z,12Z)), in particular, consists of one chain of stearic acid at the C-1 position and one chain of g-linolenic acid at the C-2 position. The stearic acid moiety is derived from animal fats, coco butter and sesame oil, 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/C45H82O16P2/c1-3-5-7-9-11-13-15-17-19-21-23-25-27-29-31-33-38(46)57-35-37(59-39(47)34-32-30-28-26-24-22-20-18-16-14-12-10-8-6-4-2)36-58-63(55,56)61-45-42(50)40(48)41(49)44(43(45)51)60-62(52,53)54/h12,14,18,20,24,26,37,40-45,48-51H,3-11,13,15-17,19,21-23,25,27-36H2,1-2H3,(H,55,56)(H2,52,53,54)/t37-,40?,41?,42?,43?,44-,45+/m1/s1