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A primary metabolite is a kind of metabolite that is directly involved in normal growth, development, and reproduction. It usually performs a physiological function in the organism (i.e. an intrinsic function). A primary metabolite is typically present in many organism or cell. It is also referred to as a central metabolite, which has an even more restricted meaning (present in any autonomously growing cell or organism). Some common examples of primary metabolites include: ethanol, lactic acid, and certain amino acids. Source: Boundless. “Primary and Secondary Metabolites.” Boundless Microbiology. Boundless, 21 Jul. 2015. Retrieved 15 Oct. 2015 from https://www.boundless.com/microbiology/textbooks/boundless-microbiology-textbook/industrial-microbiology-17/industrial-microbiology-198/primary-and-secondary-metabolites-999-5345/ Conversely, a secondary metabolite is not directly involved in those processes, but usually has an important ecological function (i.e. a relational function). A secondary metabolite is typically present in a taxonomically restricted set of organisms or cells (Plants, Fungi, Bacteria...). Some common examples of secondary metabolites include: ergot alkaloids, antibiotics, naphthalenes, nucleosides, phenazines, quinolines, terpenoids, peptides and growth factors. ==See also== *Metabolism *Metabolite *Secondary metabolite *Antimetabolite *Metabolic control analysis, a specific kind of control analysis *Metabolome *Metabolomics = the study of global metabolite profiles in a system (cell, tissue, or organism) under a given set of conditions. 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「primary metabolite」の詳細全文を読む スポンサード リンク
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