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enzyme

(Encyclopedia)enzyme, biological catalyst. The term enzyme comes from zymosis, the Greek word for fermentation, a process accomplished by yeast cells and long known to the brewing industry, which occupied the atten...

surface chemistry

(Encyclopedia)surface chemistry, study of chemical reactions in which the reactants are first adsorbed onto a surface medium (see adsorption) that then acts as a catalyst for the reaction; after the reaction the pr...

maltose

(Encyclopedia)maltose môlˈtōs [key] or malt sugar, crystalline disaccharide (see carbohydrate). It has the same empirical formula (C12H22O11) as sucrose and lactose but differs from both in structure (see isomer...

Moore, Stanford

(Encyclopedia)Moore, Stanford, 1913–82, American biochemist, b. Chicago, Ph.D. Univ. of Wisconsin, Madison, 1938. Moore joined the faculty at the Rockefeller Institute for Medical Research (now Rockefeller Univ.)...

phenylketonuria

(Encyclopedia)phenylketonuria fĕnˌəlkētˌəno͝orˈēə [key] (PKU), inherited metabolic disorder caused by a deficiency in a specific enzyme (phenylalanine hydroxylase). The absence of this enzyme, a recessive...

prosthetic group

(Encyclopedia)prosthetic group, non-amino acid portions of certain protein molecules. The key part of the prosthetic group may be either organic (such as a vitamin) or inorganic (such as a metal) and is usually req...

Arnold, Frances Hamilton

(Encyclopedia)Arnold, Frances Hamilton, 1956–, American chemical engineer, b. Edgewood, Pa., Ph.D. Univ. of California, Berkeley, 1985. Arnold has been a professor at the California Institute of Technology since ...

virology

(Encyclopedia)virology, study of viruses and their role in disease. Many viruses, such as animal RNA viruses and viruses that infect bacteria, or bacteriophages, have become useful laboratory tools in genetic studi...

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