Home Medical Dictionary U ubiquitin
Medical Term:

ubiquitin

Pronunciation: ū-bik′kwi-tin

Definition: A small (76 amino acyl residues) protein found in all cells of higher organisms and one with a structure that has changed minimally during evolutionary history; involved in at least two processes; histone modification and intracellular protein breakdown.

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Examples: glitazone, GI cocktail, etc.
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