isoelectric point

isoelectric point
the pH at which a substance is electrically neutral or at which it is at its minimum ionization.
[1895-1900]

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Universalium. 2010.

Look at other dictionaries:

  • isoelectric point — [ī΄sōē lek′trikpoint, ī΄səə lek′trik] n. the point, or pH value, at which a substance is neutral or has zero electric potential …   English World dictionary

  • isoelectric point — isoelectric point. См. изоэлектрическая точка. (Источник: «Англо русский толковый словарь генетических терминов». Арефьев В.А., Лисовенко Л.А., Москва: Изд во ВНИРО, 1995 г.) …   Молекулярная биология и генетика. Толковый словарь.

  • Isoelectric point — The isoelectric point (pI) is the pH at which a particular molecule or surface carries no net electrical charge. Amphoteric molecules called zwitterions contain both positive and negative charges depending on the functional groups present in the… …   Wikipedia

  • isoelectric point — noun : the point or narrow range on a pH scale at which the concentration of anionic part of an ampholyte equals that of the cationic part : the pH at which the ampholyte will not migrate in an electrical field the isoelectric points of most… …   Useful english dictionary

  • isoelectric point — The pH at which a protein carries no net charge. Below the isoelectric point proteins carry a net positive charge; above it a net negative charge. Due to a preponderance of weakly acid residues in almost all proteins, they are nearly all… …   Dictionary of molecular biology

  • isoelectric point — izoelektrinis taškas statusas T sritis chemija apibrėžtis Tirpalo pH vertė, kuriai esant poliamfolito ar koloidinės dalelės suminis krūvis lygus nuliui. atitikmenys: angl. isoelectric point rus. изоэлектрическая точка …   Chemijos terminų aiškinamasis žodynas

  • isoelectric point — noun the pH of a colloidal suspension or of an ampholyte at which the solute does not move in an electrophoretic field …   Wiktionary

  • isoelectric point — the pH of a solution at which a charged molecule does not migrate in an electric field …   Medical dictionary

  • isoelectric point — /ˌaɪsoʊəˈlɛktrɪk pɔɪnt/ (say .uysohuh lektrik poynt) noun the pH at which a substance is electrically neutral or least ionised …   Australian-English dictionary

  • Isoelectric focusing — (IEF), also known as electrofocusing, is a technique for separating different molecules by their electric charge differences. It is a type of zone electrophoresis, usually performed in a gel, that takes advantage of the fact that a molecule s… …   Wikipedia

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