urocanic acid

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ur·o·can·ic ac·id

(yūr'ō-kan'ik as'id),
4-Imidazoleacrylic acid; an acid derived from the oxidative deamination of l-histidine; present in sweat and in dog's urine; elevated levels are observed in cases of urocanate hydratase deficiency. The cis form, resulting from exposure to UV radiation, activates suppressor T cells.

urocanic acid

/uro·can·ic ac·id/ (-kan´ik) an intermediate metabolite of histamine, convertible normally to glutamic acid.

u·ro·can·ic ac·id

(yūr'ō-kan'ik as'id)
Derived from the oxidative deamination of l-histidine; present in sweat; elevated levels are observed in cases of urocanate hydratase deficiency.
References in periodicals archive ?
Thirteen of the 20 treatments applied to soil (succinic acid, [alpha]-ketoglutaric acid, mannitol, urocanic acid, L-asparagine, riboflavin, sucrose, uric acid, cellulose, root exudates, L-serine, [alpha]-ketobutyric acid, humic acid) resulted in significantly lower (P [less than or equal to] 0.
Treatments used to evaluate the microbial response to a range of organic C compounds (solutions prepared to provide 30 [micro]g C/g soil at a C: N:P ratio of 10:1:1) Group Organic C compound Amino acid L-Asparagine, L-arginine, glycine, L-serine Alcohol Mannitol Carbohydrate D-Glucose, sucrose Carboxylic Citric acid a-ketobutyric acid, [alpha]-ketoglutaric acid acid, succininc acid, uric acid Vitamin Thiamin, riboflavin Aromatic Urocanic acid Amine L-Glutamine Other Cellulose, fulvic acid humic acid synthetic root exudates (50 mM fructose, 50 mM D-glucose, 50 mM sucrose, 25 mM succinic acid, 25 mM DL-malic acid, 12.
Hanson, working with Simon at UCSD, looked at urocanic acid, a compound found in the outermost layer of skin.
2 (Degens 1998) and included 2 amines (D-glucosamine, L-glutamine) and six amino acids (L-arginine, L-asparagine, L-glutamic acid, L-histidine, L-lysine, L-serine) added at 10mM; 2 carbohydrates (D-glucose, D-mannose) added at 75mM; and 15 carboxylic acids (L-aseorbic acid, citric acid, fumaric acid, gluconic acid, [alpha]-ketobutyric acid, [alpha]-ketoglutaric acid, [alpha]-ketovaleric acid, DL-malic acid, malonic acid, pantothenic acid, quinic acid, succinic acid, tartaric acid, uric acid, and urocanic acid) added at 100 mM (Degens and Vojvodic-Vnkovic 1999).
that come from plants including urocanic acid (a carcinogen but it is natural
The substrates used here were 2 amines (D-glucosamine, L-glutamine), 6 amino acids (L-arginine, L-asparagine, L-glutamic acid, L-histidine, L-lysine, L-serine), 2 carbohydrates (D-glucose, D-mannose), and 15 carboxylic acids (L-ascorbic acid, citric acid, fumaric acid, gluconic acid, [Alpha]-ketobutyric acid, [Alpha]-ketoglutaric acid, [Alpha]-ketovaleric acid, DL-malic acid, malonic acid, pantothenic acid, quinic acid, succinic acid, tartaric acid, uric acid, and urocanic acid), [Alpha]-DL-hydroxybutyric acid was excluded from the list of 25 substrates defined by Degens (1998b) because of the unavailability of the compound and poor response in previous work (Degens 1998a, 1998b, 1999).