Digalactosyl

DGDG digalactosyl diacylglycerol DHPC dihexadecyl phosphatidylcholine DMPC dimyristoyl phosphatidylcholine DOPC dioleoyl phosphatidylcholine DPPC dipalmitoyl phosphatidylcholine EYPC egg yolk phosphatidylcholine POPC 1-palmitoyl 2-oleoyl-phosphatidylcholine SBPC soya bean phosphatidylcholine... 

DORMANN, P., HOFFMANN-BENNING, S., BALBO, I., BENNING, C., Isolation and characterization of an Arabidopsis mutant deficient in the thylakoid lipid digalactosyl diacylglycerol, Plant Cell, 1995, 7, 1801-1810. 

A series of amphiphiles containing a polygalactosylated tris(hydroxymethyl) aminomethane (Tris) linked to a diacyl aspartic acid (31) were synthesized by Polidori and co-workers.88 These compounds had a peptidic spacer for control of the hydrophilic/lipophilic balance as well as providing intermolecu-lar hydrogen bonding. The mono- and digalactosylated (31a, 31b) derivatives... 

Figure 23-29 (A) Stereoscopic drawing of light-harvesting complex from the dinoflagellate protozoan Amphidinium carterae. The central cavity contains eight molecules of peridinin, two of which can be seen protruding from the top. Deeply buried toward the bottom are two molecules of Chi a. Also present are two molecules of digalactosyl diacylglycerol. From Hofmann et al.268 Courtesy of Wolfram Welte. (B) Structure of peridinin.

Also may be cited the isolation, from Vicia seeds, of galactinol, a galacto-side of inositol, previously known only in beetroots it is accompanied by a higher homolog, a digalactosyl-inositol. It has since been shown elsewhere... 

Several features of this classification merit comment. Six lipids have been included in the Table, but the identification of two of them [(C) and (F)] is not firmly established. Lipid (C) was tentatively identified in human brain (24) extracts of rat brain appear to be able to catalyse its formation when incubated under appropriate conditions (25) (this is discussed in more detail subsequently). Lipid (F) was detected in human testis and sperm (26), and exhibited chromatographic and other properties corresponding to what would be expected from a digalactosyl-... 

These same human sera and some of the rabbit sera also were tested against ceramide trihexoside (CTH) and digalactosyl diglyceride (Table I). Several of the human sera reacted with digalactosyl diglyceride, in confirmation of the results of Hirsch and Parks ( 5). Although only a few human sera reacted with CTH, all of the rabbit sera tested showed reactivity. 

TABLE I. HUMAN AND RABBIT NATURAL ANTIBODIES AGAINST DIGALACTOSYL DIGLYCERIDE AND CERAMIDE TRIHEXOSIDE... 

GALACTOLIPIDS Digalactosyldiglyceride Monogalactosyldiglyceride 6-O-Acylgalactosyl monoglyceride Digalactosyl monoglyceride... 

Significant activity of the total lipid fraction of Carthamus lanatus was found against Staphylococcus aureus [249]. The lipid composition was examined and almost equal amounts of triacylglycerols, digalactosyl diacylglycerols and phospholipids were determined. Examples of other antimicrobial lipids from the Anthemideae tribe also included Xanthium strumarium lipids [250], and glyceroglycolipids from Serratula... 

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