chelation

chelation
Binding of a metal ion by a larger molecule such as EDTA or protein (iron in haem is held as a chelate). The binding is strong but reversible and chelating agents can be used to buffer the free concentration of the ion in question.

Dictionary of molecular biology. 2004.

Look at other dictionaries:

  • Chelation — Chélation Complexe chélate de l EDTA avec un cation métallique La chélation (prononcer kélassion, du grec khêlê : « pince ») est un processus physico chimique au cours duquel est formé un complexe, le chélate, entre un ligand, dit… …   Wikipédia en Français

  • chelation — n. the process of removing a heavy metal from a solution by means of a chelate; as (Med.) the treatment of lead or mercury poisoning by adding a chelating agent to the blood. [WordNet 1.5 +PJC] 2. the process of forming a ring by forming one or… …   The Collaborative International Dictionary of English

  • Chelation — Metal EDTA chelate Chelation is the formation or presence of two or more separate coordinate bonds between a polydentate (multiple bonded) ligand and a single central atom.[1] Usually these ligands are organic compounds, and are calle …   Wikipedia

  • Chélation — Complexe chélate de l EDTA avec un cation métallique La chélation (prononcer kélassion, du grec khêlê : « pince ») est un processus physico chimique au cours duquel est formé un complexe, le chélate, entre un ligand, dit chélateur… …   Wikipédia en Français

  • chélation — * * * chélateur [ kelatɶr ] adj. m. et n. m. • mil. XXe; du gr. khêlê « pince » ♦ Didact. Se dit d un corps qui a la propriété de se lier fortement et de manière plus ou moins spécifique à un ion positif bivalent et trivalent (notamment… …   Encyclopédie Universelle

  • chelation — noun Date: 1932 1. the process of chelating or the quality or state of being chelated 2. chelation therapy …   New Collegiate Dictionary

  • chelation — noun 1. (medicine) the process of removing a heavy metal from the bloodstream by means of a chelate as in treating lead or mercury poisoning • Derivationally related forms: ↑chelate • Topics: ↑medicine, ↑medical specialty • Hypernyms: ↑ …   Useful english dictionary

  • chelation — a method of binding or locking up metal ions, used in water treatment in aquaria …   Dictionary of ichthyology

  • chelation — /kee lay sheuhn/, n. 1. Chem. the process of chelating. 2. Med. a. a method of removing certain heavy metals from the bloodstream, used esp. in treating lead or mercury poisoning. b. a controversial treatment for arteriosclerosis that attempts to …   Universalium

  • chelation — noun a) the formation of a polydentate chelate compound from a metal salt b) the use of this process to remove metal ions from solution, especially to counter poisoning by heavy metals See Also: chelate, chelated …   Wiktionary