acetyl groups

acetyl groups, the carbon- and hydrogen-containing groups required for synthesis of lipids.
References in periodicals archive ?
The extraction process involves isolating a substance called chitin that is found in the shells and then changing its structure by removing most chemical branches from its acetyl groups.
The demonstration of strong positive relationship of free L-carnitine with functional spermatozoal characteristics in this study have further validated the fact that intrasperm L-carnitine is involved in mitochondrial energetics, keeping in mind the various studies which demonstrated carnitine uptake and expression of OCTN2 and OCTN3 carnitine transporters in mouse sperm,13 correlation of intrasperm L-carnitine with motility and survival in cervical mucus of bovine,29 and acetylcarnitine contributing acetyl groups for energy production in Boar spermatozoa.
The analytical procedures used for the analysis of wood, pulp and liquor were: chip classifications --Scan 40:94 (SCANDINAVIAN PULP, PAPER AND BOARD TESTING COMMITTEE, 2004); density--Tappi T258 om-94 TECHNICAL ASSOCIATION OF THE PULP AND PAPER INDUSTRY, 2002); total extractive--Tappi T204 cm-97 (TECHNICAL ASSOCIATION OF THE PULP AND PAPER INDUSTRY, 2002); Acid insoluble lignin (GOLDSCHIMID, 1971); Acid soluble lignin (GOMIDE; DEMUNER, 1986); carbohydrate content (WALLIS; WEARNE; WRIGHT, 1996); uronic acids (SCOTT, 1979); acetyl groups (SOLAR et al.
25 can be attributed to residual acetyl groups of CS, which also confirm that PLLA chains have been grafted on CS [24].
Acetyl xylan esterase (AXE), an enzyme able to hydrolyze ester linkages at position C-2 and/or C-3 of the acetyl groups in xylose moieties of naturally acetylated xylans, was first isolated from a crude culture of the filamentous fungus Schizophyllum commune (Biely, 1985).
The problem with acetate film is that the acetyl groups that make up the cellulose acetate chain can detach in the presence of moisture, heat, and acids.
Removing acetyl groups from lysine amino acids on histones to encourage stronger binding of chromatin structures to suppress gene transcription, and adding acetyl groups to weaken binding of chromatin structures to promote transcriptional activity play an important role in regulation of gene transcription on histones.
Acetyl groups are naturally present in all wood species, which means that nothing toxic is added.
They include the attachment of molecules, such as methyl groups or acetyl groups, to one of the histone proteins around which DNA winds in cells.
Histone deacetylases (HDACs) are primarily involved in removing the acetyl groups from the so-called histones and thereby affect how our genes are stored.
Acetylation induces ester bonds between acetic anhydride (AA) and hydroxyl groups, creating stable acetyl groups which are resistant to water (Rowell et al, 1982).