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A tetramer () (''tetra-'', "four" + ''-mer'', "parts") is an oligomer formed from four monomers or protein subunits. The associated propriety is called ''tetramery''. An example is kobophenol A, a molecule formed from four stilbenoids monomers. In biochemistry, it similarly refers to a biomolecule formed of four units, that are the same (homotetramer), i.e. as in Concanavalin A or different (heterotetramer), i.e. as in hemoglobin. Hemoglobin has 4 similar sub-units while immunoglobulins have 2 very different sub-units. The different sub-units may have each their own activity, such as binding biotin in avidin tetramers, or have a common biological property, such as the allosteric binding of oxygen in hemoglobin. ==See also== * Tetrameric protein * Tetramery (botany), ''tetramerous'', a plant with four component parts in each whorls of its structure * ''Tetramerium'', a genus of plants belonging to the family Acanthaceae 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Tetramer」の詳細全文を読む スポンサード リンク
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