| 单词 | amino acid |
| 释义 | amino acid (once / 23130 pages) n An amino acids is an organic compound, and it serves as a building block for proteins. Each amino acid contains an amino group and a carboxylic acid group. Amino acids are important because they make up proteins, which are a vital part of your diet. When you consume food with amino acids, it turns them into proteins which are a source of energy. There are amino acids in food like bacon and eggs, which is why you get a burst of energy after eating them. WORD FAMILYamino acid: amino acids USAGE EXAMPLESInstead they are using a short strand of amino acids, the building blocks of proteins, to target cancer cells. Nature(Nov 28, 2016) For example, the sugars or the amino acid taurine in many caffeinated energy drinks produce different effects on mood and attention than caffeine alone. Washington Post(Nov 25, 2016) It is a compound of nitrogen and hydrogen produced by the breakdown of amino acids, the building blocks of proteins. Economist(Oct 27, 2016) n organic compounds containing an amino group and a carboxylic acid group proteins are composed of various proportions of about 20 common amino acids Syn|Hypo|Hyper aminoalkanoic acid alanine a crystalline amino acid that occurs in many proteins asparaginea crystalline amino acid found in proteins and in many plants (e.g., asparagus) aspartic acida crystalline amino acid found in proteins and occurring naturally in sugar beets and sugar cane canavaninean amino acid found in the jack bean citrullinean amino acid that does not occur in proteins but is an intermediate in the conversion of ornithine to arginine cysteinean amino acid containing sulfur that is found in most proteins; oxidizes on exposure to air to form cystine cystinea crystalline amino acid found in proteins (especially keratin); discovered in bladder stones dihydroxyphenylalanine, dopaamino acid that is formed in the liver and converted into dopamine in the brain essential amino acidan amino acid that is required by animals but that they cannot synthesize; must be supplied in the diet GABA, gamma aminobutyric acidan amino acid that is found in the central nervous system; acts as an inhibitory neurotransmitter glutamic acid, glutaminic acidan amino acid occurring in proteins; important in the nitrogen metabolism of plants; used in monosodium glutamate to enhance the flavor of meats glutaminea crystalline amino acid occurring in proteins; important in protein metabolism glycinethe simplest amino acid found in proteins and the principal amino acid in sugar cane hydroxyprolinea crystalline amino acid obtained from gelatin or collagen iodoamino acidan amino acid with iodine added ornithinean amino acid that does not occur in proteins but is important in the formation of urea prolinean amino acid that is found in many proteins (especially collagen) creatin, creatinean amino acid that does not occur in proteins but is found in the muscle tissue of vertebrates both in the free form and as phosphocreatine; supplies energy for muscle contraction sarcosinea sweetish crystalline amino acid serinea sweetish crystalline amino acid involved in the synthesis by the body of cysteine thyroninea phenolic amino acid of which thyroxine is a derivative tyramineamino acid derived from tyrosine; has a sympathomimetic action; found in chocolate and cola drinks and ripe cheese and beer tyrosinean amino acid found in most proteins; a precursor of several hormones Bendopa, Brocadopa, L-dopa, Larodopa, levodopathe levorotatory form of dopa (trade names Bendopa and Brocadopa and Larodopa); as a drug it is used to treat Parkinson's disease argininea bitter tasting amino acid found in proteins and necessary for nutrition; its absence from the diet leads to a reduced production of spermatozoa iodotyrosinetyrosine with iodine added iodothyroninethyronine with iodine added histidinean essential amino acid found in proteins that is important for the growth and repair of tissue isoleucinean essential amino acid found in proteins; isomeric with leucine leucinea white crystalline amino acid occurring in proteins that is essential for nutrition; obtained by the hydrolysis of most dietary proteins lysinean essential amino acid found in proteins; occurs especially in gelatin and casein methioninea crystalline amino acid containing sulfur; found in most proteins and essential for nutrition phenylalaninean essential amino acid found in proteins and needed for growth of children and for protein metabolism in children and adults; abundant in milk and eggs; it is normally converted to tyrosine in the human body threoninea colorless crystalline amino acid found in protein; occurs in the hydrolysates of certain proteins; an essential component of human nutrition tryptophan, tryptophanean amino acid that occurs in proteins; is essential for growth and normal metabolism; a precursor of niacin valinean essential amino acid found in proteins; important for growth in children and nitrogen balance in adults organic compound any compound of carbon and another element or a radical |
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