| carboxyl-terminal residue | This amino acid residue defines the carboxylterminus of the polypeptide, its the only residue with a free alpha-carboxyl group. (09 Oct 1997) |
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| carboxylase | 1. One of several carboxy-lyases, trivially named carboxylases or decarboxylases (EC subclass 4.1.1), catalyzing the addition of CO2 to all or part of another molecule to create an additional -COOH group (e.g., ribulose-1,5-bisphosphate carboxylase). 2. Obsolete name for pyruvate decarboxylase. (05 Mar 2000) |
| carboxylate reductase | <enzyme> From pyrococcus furiosus; acts on glyceraldehyde to yield glycerate in a unique, partially nonphosphorylated, glycolytic pathway that generates acetyl-CoA from glucose without the participation of nicotinamide nucleotides Registry number: EC 1.2.99.6 Synonym: glyceraldehyde ferredoxin oxidoreductase, tungsten-iron-sulfur protein, red tungsten protein (26 Jun 1999) |
| carboxylation | Addition of CO2 to an organic acceptor, as in formation of malonyl-CoA or in photosynthesis, to yield a -COOH group; catalyzed by carboxylases. (05 Mar 2000) |
| carboxylesterase | <enzyme> Catalyses a carboxylic ester to yield an alcohol and carboxylic acid anion; has wide specificity; also hydrolyzes vitamin a esters; can be used to separate stereoisomers; consider also esterase b which is a serine protease Registry number: EC 3.1.1.1 Synonym: carboxylic ester hydrolase, esterase 1, non-specific esterase, esterase 1f, non-specific carboxylesterase, esterase a4, porphobilinogen esterase, isocarboxazide amidase, esterase 6, aliesterase, ali-esterase, esterase 6a, steroid acetate hydrolyzing enzyme, carboxyesterase, esterase 8, esterase 3, esterase 13, esterase 10, pi-6.1 esterase, carboxylesterase b, carboxyl ester lipase, esterase 12, esterase-s, carboxylate esterase, esterase 29, esterase es-1a, naproxen esterase, esterase 30, non-specific esterase, b-esterase, capsaicin-hydrolyzing enzyme, cap-hydrolyzing enzyme, hydrolase pi 5.6, hydrolase a (rat liver), pi 6.1 esterase, carboxylesterase np, gha deacetylase, esterase 5b (26 Jun 1999) |
| carboxylic acid | An organic acid containing the functional group -COOH.Structurally, the group looks like: O=C- | OH (09 Oct 1997) |
| carboxylic acid ester | Specifically, an ester derived from a carboxylic acid and an alcohol; R-CO-R' (05 Mar 2000) |
| carboxylic acid reductase | <enzyme> Reduces double bonds in presence of hydrogen Registry number: EC 1.3.99.- (26 Jun 1999) |
| carboxylic acids | Organic acids containing the carboxy (-cooh) group, including amino acids and fatty acids. Carboxylic acid is used both as a class name and a suffix. (12 Dec 1998) |
| carboxylic ester hydrolases | <enzyme> Enzymes which catalyze the hydrolysis of carboxylic acid esters with the formation of an alcohol and a carboxylic acid anion. Registry number: EC 3.1.1 (12 Dec 1998) |
| carboxyltransferases | Enzymes transferring carboxyl groups from one compound to another. Synonym: transcarboxylases. (05 Mar 2000) |
| carboxymethylcellulose | <chemical> Polycarboxymethyl ether of cellulose. It is used as an emulsifier, thickener, suspending agent, etc., in cosmetics and pharmaceuticals; in research as a culture medium; in chromatography as a stabiliser for reagents; and therapeutically as a bulk laxative with antacid properties. Pharmacological action: cathartic, pharmaceutic aid. Chemical name: Cellulose, carboxymethyl ether, sodium salt (12 Dec 1998) |
| carboxynorspermidine decarboxylase | <enzyme> Nspc protein isolated from vibrio alginolyticus; genbank d31783 Registry number: EC 4.1.1.- Synonym: cans dc, nspc gene product (26 Jun 1999) |
| carboxynorspermidine synthase | <enzyme> Catalyses reductive condensation of l-aspartic beta-saemialdehyde with diaminopropane to form carboxynorspermidine and water; requires NADPH Registry number: EC 1.5.1.- Synonym: c-nspd synthase, aspartic saemialdehyde-diaminopropane schiff base reductase (26 Jun 1999) |
| carboxypeptidase | <enzyme> Enzymes (particularly of pancreas) that remove the C terminal amino acid from a protein or peptide. Carboxypeptidase A, will remove any amino acid, carboxypeptidase B is specific for terminal lysine or arginine. (18 Nov 1997) |
Synonyms : Carbonic Anhydrase 4, Carbonic Anhydrase Isozyme IV, Anhydrase 4, Carbonic
Synonyms : Carbonic Anhydrase Isozyme V
Synonyms : Anhydrases, Carbonic, Dehydratase, Carbonate
Synonyms : Carbonyl Cyanide m Chlorophenyl Hydrazone, Carbonyl Cyanide meta Chlorophenyl Hydrazone
Synonyms : (4-(Trifluoromethoxy)phenyl)hydrazonopropanedinitrile, Carbonyl Cyanide p Trifluoromethoxyphenylhydrazone, Carbonyl Cyanide para Trifluoromethoxyphenylhydrazone, Cyanide p-Trifluoromethoxyphenylhydrazone, Carbonyl
| carbohydrate |
Compounds made up of chains of sugar units. Simple carbohydrates include table sugar (sucrose), milk sugar (lactose), and fruit sugar (fructose). Complex carbohydrates are very long chains held together by bonds that may not be digestible in the stomach and intestine of a carnivore. Starch is a digestible complex carbohydrate. Seed hulls such as oat bran are digestible by ruminants and horses, but not carnivores.
Ãâó: www.peteducation.com/dict_alpha_listing.cfm
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| carbohydrate |
Carbohydrates are organic compounds that consist of carbon, hydrogen and oxygen. They vary from simple sugars containing from three to seven carbon atoms to very complex polymers. Only the hexoses (sugars with six carbon atoms) and pentoses (sugars with five carbon atoms) and their polymers play important roles in nutrition. Carbohydrates in food provide 4 calories per gram.
Ãâó: members.tripod.com/michellejp1/id12.html
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| carbon tetrachloride |
A manufactured compound, most often found as a colorless gas. Because of its harmful effect on the ozone layer, the production and use of carbon tetrachloride in industrialized nations was banned in 1996 under the Montreal Protocol on Substances that Deplete the Ozone Layer. It is highly persistent and remains at levels of concern in the environment in the United States; it is an important hazardous air pollutant.
Ãâó: www.epa.gov/envirohealth/children/background/gloss...
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| carbon dioxide |
Burning fossil fuels releases carbon that has been stored underground for millions of years into the atmosphere. The carbon in these fossil fuels is transformed into carbon dioxide, the predominant gas contributing to the greenhouse effect, during the combustion process. ...
Ãâó: www.epa.gov/greenpower/whatis/glossary.htm
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| carbon monoxide |
A colorless, odorless poison gas produced by incomplete combustion of organic matter. Carbon monoxide may be produced in lethal quantities in automobile exhaust, faulty home heating systems, improperly used portable gas stoves and heaters, improperly vented wood stoves and fireplaces, and in many industrial situations.
Ãâó: science.education.nih.gov/supplements/nih2/chemica...
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