acyl


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acyl

[′a·səl]
(organic chemistry)
A radical formed from an organic acid by removal of a hydroxyl group; the general formula is RCO, where R may be aliphatic, alicyclic, or aromatic.
References in periodicals archive ?
The objectives of this study were to seek evidence of phospholipid signaling and to investigate the dynamics of phospholipid acyl side chain composition in the leaves of five winter wheat cultivars differing in cold tolerance of the acclimated plants, during 5 wk of cold acclimation.
Vinyl acetate in many ways is an acyl donor of first choice in lipase catalysed transesterification reactions [33] But one major drawback associated with use of vinyl esters, is the production of co- product acetaldehyde", which is liberated during the reaction.
Table-2: Effect###of###coniferyl###alcohol###(1)###and###its synthetic acyl analogues (2-9) on the inhibition of M.tuberculosis H37Rn.
Acylated low molecular weight chitosan were synthesized from the nucleophilic acyl substitution reaction of chitosan and acid anhydrides include butyric, hexanoic, octanoic and decanoic anhydride, as shown in the Fig.
coli LpxD confirmed that H239 is critical for catalysis: H239 A decreased [k.sub.cat] almost 3 orders of magnitude with a moderate decrease of the acyl acceptor [K.sub.M] [41].
The processes for converting C18 fatty acids to HUFA are associated with the enzymes of fatty acyl desaturase (Fad) and elongase.
The fast process occurs on the picoseconds time scale ([??]/[GAMMA] [approximately equal to] 0.33 ps) and is believed to describe the hydrogen motion with respect to the acyl carbon atoms that act like a center of mass for a restricted librational motion about the C-H bond direction [25].
For the determination of initial rates, esterification and transesterification were conducted by using 55 mg Novozym 435 lipase with appropriate quantities of acyl donor (flurbiprofen or flurbiprofen methyl ester) and L-ascorbic acid.
Each chapter addresses one of seven major lipid classes--fatty acids, eicosanoids and bioactive lipid mediators, fatty acyl esters and amides, glycerol esters, glycerophospholipids, sphingolipids, and steroids--with details on the pathways of formation of major product ions and ions used for structural characterization.
Fatima Haram Acyl, Commissioner for Trade and Industry, African Union Commission (AUC) discusses the work of AUC and its partners the African Development Bank, the United Nations Economic Commission for Africa and the United Nations Development.