amphipathic molecule

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• amphipathic — Of a molecule, having both hydrophobic and hydrophilic regions. Can apply equally to small molecules, such as phospholipids, and macromolecules such as proteins …   Dictionary of molecular biology

• amphipathic — /am feuh path ik/, adj. Chem. (of a molecule) having two different affinities, as a polar end that is attracted to water and a nonpolar end that is repelled by it. [1970 75; AMPHI + PATHIC] * * * …   Universalium

• amphipathic — adjective a) describing a molecule, such as a detergent, which has both hydrophobic and hydrophilic groups. b) often refers to the surface(s) on a protein, particularly an alpha helix, where one surface of the alpha helix has hydrophilic amino… …   Wiktionary

• amphipathic — Denoting a molecule, such as comprises detergents or wetting agents, that contains groups with characteristically different properties, e.g., both hydrophilic and hydrophobic properties. SYN: amphiphilic, amphiphobic. [amphi + G. pathos, feeling] …   Medical dictionary

• amphipathic — adj. (about a molecule) having a head end that attracts water and a tail end that repels it, hydrophilic at one end and hydrophobic at the other (Chemistry) …   English contemporary dictionary

• amphipathic — [ˌamfɪ paθɪk] (also amphiphilic ˌamfɪ fɪlɪk) adjective Biochemistry (of a molecule) having both hydrophilic and hydrophobic parts. Origin 1930s: from amphi + Gk pathikos (from pathos experience ) …   English new terms dictionary

• amphipathic — adj. Chem. 1 of a substance or molecule that has both a hydrophilic and a hydrophobic part. 2 consisting of such parts. Etymology: AMPHI + Gk pathikos (as PATHOS) …   Useful english dictionary

• Sizing — or size is a substance that is applied to porous materials as a glaze or filler. It is used to change surface properties in papermaking, gilding, and the manufacture of textiles. Papermaking Sizing is used on fibers during paper manufacture in… …   Wikipedia

• Langmuir-Blodgett film — In biophysics, an ordered monolayer of molecules produced on the surface of water. An amphipathic molecule is floated at low concentration on the surface of the water, and steadily compressed into an ordered surface by moving a barrier across the …   Dictionary of molecular biology

• concentration — 1. A preparation made by extracting a crude drug, precipitating from the solution, and drying. 2. Increasing the amount of solute in a given volume of solution by evaporation of the solvent. 3. The quantity of a substance per unit …   Medical dictionary

• lipid — /lip id, luy pid/, n. Biochem. any of a group of organic compounds that are greasy to the touch, insoluble in water, and soluble in alcohol and ether: lipids comprise the fats and other esters with analogous properties and constitute, with… …   Universalium