منابع مشابه
Eutrophication and Phosphate Detergents
concept argue that from 9 to 23 percent of the cellular metabolic energy is required for the operation of the sodium pump (3). The question is, then, whether the cell can provide the energy necessary to pump potassium, calcium, magnesium, sugars, and amino acids if it takes 10 percent of the energy to run only one pump? Recently, some alternative hypotheses, often referred to, in general, as th...
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Toward enhancing in vitro membrane protein studies, we have utilized small self-assembling peptides with detergent properties ("peptergents") to extract and stabilize the integral membrane flavoenzyme, glycerol-3-phosphate dehydrogenase (GlpD), and the soluble redox flavoenzyme, NADH peroxidase (Npx). GlpD is a six transmembrane spanning redox enzyme that catalyzes the oxidation of glycerol-3-p...
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As anyone who has ever blown bubbles as or with a child knows, if you stop blowing before the sphere is complete, it collapses and disappears. The gas exchange surfaces of our lungs, the alveoli, are also highly curved, thin-walled, moist membranes that are open to the atmosphere. They too, would tend to go poof! and disappear, save for a mixture of phospholipids and proteins that lines the epi...
متن کاملAction of Synthetic Detergents
The bactericidal and bacteriostatic actions of soaps have been recognized for many years. Detailed studies by Eggerth (1) on the germicidal action of soaps have shown the importance of such factors as length of hydrocarbon chain, chemical configuration, effect of hydrogen ion concentration, effect of serum, etc. Avery (2) demonstrated the selective germicidal action of soap on microorganisms, a...
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In clinical dermatology, few questions are asked more commonly than “What is the best way for me to clean my skin or hair?” The modern dermatologist needs to be familiar with the physiologic action of cleansing products available on the market. This familiarity should include chemical composition, application, cosmetic benefits, and safety, as well as potential hazards. This knowledge must be a...
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ژورنال
عنوان ژورنال: Nature
سال: 1971
ISSN: 0028-0836,1476-4687
DOI: 10.1038/234113c0