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Chemical formula: C 6 H 9 N 3 O 2 ... (L-histidine) This page was last edited on 12 April 2023, at 11:40 (UTC). Text is available under the Creative Commons ...
Histidine (symbol His or H) [2] is an essential amino acid that is used in the biosynthesis of proteins.It contains an α-amino group (which is in the protonated –NH 3 + form under biological conditions), a carboxylic acid group (which is in the deprotonated –COO − form under biological conditions), and an imidazole side chain (which is partially protonated), classifying it as a ...
A polyhistidine-tag, best known by the trademarked name His-tag, is an amino acid motif in proteins that typically consists of at least six histidine (His) residues, often at the N- or C-terminus of the protein. It is also known as a hexa histidine-tag, 6xHis-tag, or His6 tag.
Anserine (β-alanyl-3-methylhistidine) is a dipeptide containing β-alanine and 3-methylhistidine. [1] Anserine is a derivative of carnosine, which has been methylated. [2]Both anserine and carnosine chelate copper. [3]
Since beta-alanine is not incorporated into proteins, carnosine can be stored at relatively high concentrations (millimolar). Occurring at 17–25 mmol/kg (dry muscle), [9] carnosine (β-alanyl-L-histidine) is an important intramuscular buffer, constituting 10-20% of the total buffering capacity in type I and II muscle fibres.
WW International, Inc., formerly Weight Watchers International, Inc., is a global company headquartered in the U.S. that offers weight loss and maintenance, fitness, and mindset services such as the Weight Watchers comprehensive diet program. [3]
The Weight Watchers diet tries to restrict energy to achieve a weight loss of 0.5 to 1.0 kg per week, [1] [3] which is the medically accepted standard rate of a viable weight loss strategy. [4] The dietary composition is akin to low-fat diets [ 1 ] or moderate-fat and low-carbohydrate diet [ 5 ] depending on the variant used.
Diethyl pyrocarbonate (DEPC), also called diethyl dicarbonate (IUPAC name), is used in the laboratory to inactivate RNase enzymes in water and on laboratory utensils. It does so by the covalent modification of histidine (most strongly), lysine, cysteine, and tyrosine residues.