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Any of a group of small proteins, rich in cysteinyl residues, that is synthesized in the liver and kidney in response to the presence of divalent ions (for example, zinc, mercury, cadmium, copper) and that binds these ions tightly; of importance in ion transport and detoxification; the apoprotein is thionein.
Farlex Partner Medical Dictionary © Farlex 2012
metallothioneinA family of low-molecular-weight, cysteine-rich proteins present in various tissues, which bind functional (e.g., copper, selenium, zinc) and toxic (e.g., arsenic, cadmium, mercury, silver) metal ions. Metallotheonein production is stimulated by heavy metals (e.g., cadmium and mercury) and is involved in transport, storage, and regulation of “natural” metal ions.
Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.
A small protein, rich in cysteinyl residues, which is synthesized in the liver and kidney in response to the presence of divalent ions (zinc, mercury, cadmium, copper) and that binds these ions tightly; of importance in ion transport and detoxification.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012