Chain-melting transition temperatures of phospholipids with acylated or alkylated headgroups (N-acyl phosphatidylethanolamines and O-alkyl phosphatidic acids), or with α-branched chains
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چکیده
منابع مشابه
detection of volatile compounds of medicinal plants with some nano-sorbents using modified or new methodologies and investigation of antioxidant activity of their methanolic extracts
in this work, a novel and fast method for direct analysis of volatile compounds (davc) of medicinal plants has been developed by holding a filament from different parts of a plant in the gc injection port. the extraction and analysis of volatile components of a small amount of plant were carried out in one-step without any sample preparation. after optimization of temperature, extraction time a...
Discovery of a metagenome-derived enzyme that produces branched-chain acyl-(acyl-carrier-protein)s from branched-chain α-keto acids.
Clones that confer the ability to produce N-acyl amino acids onto model cultured bacterial hosts are frequently identified in activity-based screens of soil DNA libraries. The N-acyl amino acids encoded by these clones are synthesized from acyl-(acylcarrier-protein)s (acyl-ACPs) and amino acids by a diverse group of bacterial enzymes referred to as N-acyl amino acid synthases (NASs). 2] The acy...
متن کاملActivation of the Carboxylic Acids by Anhydride Formation with N-Acyl-N-Alkyl Carbamic Acid
The mixed anhydrides with N-acyl carbamic acid (IV) were prepared by the reaction of carboxylic acids (Ill) with N-chlorocarbonyl lactams (Ila) or sec. amides (lib). Decarboxylation of IV yielded N-acyl lactams (VI), while symmetrical anhydrides (VII) were obtained by the side reaction of IV with carboxylic acids (III). Aminolysis of IV yielded carboxylic acid amides (IX) in high yield and puri...
متن کاملSynthesis of alkyl-branched fatty acids
Alkyl-branched fatty compounds are of interest for industrial products in the cosmetics and lubricant areas. In this review, clayand zeolite-catalyzed isomerizations of unsaturated fatty compounds, especially of oleic acid, are discussed. While clay-catalyzed reactions give most complex mixtures of dimeric fatty acids and of monomeric so-called “isostearic acid”, the zeolite-catalyzed process y...
متن کاملFatty Acids: Branched-chain
Branched-chain fatty acids are common constituents of the lipids of bacteria and animals, although they are rarely found in the integral lipids of higher plants. Normally, the fatty acyl chain is saturated and the branch is a methyl-group. However, unsaturated branched-chain fatty acids are found in marine animals, and branches other than methyl may be present in microbial lipids. The most comm...
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ژورنال
عنوان ژورنال: Biochimica et Biophysica Acta (BBA) - Biomembranes
سال: 1998
ISSN: 0005-2736
DOI: 10.1016/s0005-2736(98)00158-8