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operon

(Encyclopedia)operon, in genetics, site on a bacterial chromosome containing genes that control protein synthesis (structural genes) together with a gene that determines whether the structural genes are active or n...

Kornberg, Arthur

(Encyclopedia)Kornberg, Arthur, 1918–2007, American biochemist, b. Brooklyn, grad. College of the City of New York (B.S., 1937) and Univ. of Rochester (M.D., 1941). In 1942 he joined the U.S. Public Health Servic...

digallic acid

(Encyclopedia)digallic acid: see gallic acid.

citric acid

(Encyclopedia)citric acid or 2-hydroxy-1,2,3-propanetricarboxylic acid, HO2CCH2C(OH)(CO2H)CH2CO2H, an organic carboxylic acid containing three carboxyl groups; it is a solid at room temperature, melts at 153℃, an...

chloric acid

(Encyclopedia)chloric acid: see chlorate.

ethanedioic acid

(Encyclopedia)ethanedioic acid ĕthˌāndīōˈĭk [key], IUPAC name for oxalic acid. ...

fatty acid

(Encyclopedia)fatty acid, any of the organic carboxylic acids present in fats and oils as esters of glycerol. Molecular weights of fatty acids vary over a wide range. The carbon skeleton of any fatty acid is unbran...

isobutyric acid

(Encyclopedia)isobutyric acid īˌsəbyo͞otērˈĭk [key]: see butyric acid. ...