Metabolic Pathways

Metabolic Pathways - First"A" combines...

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Metabolic Pathways Metabolism refers to the chemical reactions that occur within cells. A hypothetical metabolic pathway is shown below. Reactions occur in a sequence and a specific enzyme catalyzes each step. Intermediates can be used as starting points for other pathways. For example, "C" in the diagram above can be used to produce "D" but can also be used to produce "F". Cyclic Pathways Some metabolic pathways are cyclic. The function of the cyclic pathway below is to produce E from A. Several intermediate steps are involved in the production of E.
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Unformatted text preview: First, "A" combines with "F" to produce "B". "B" is then converted to "C", which is then converted to "D". "D" is then split to produce "E" (the desired product) and "F". "F" can be reused by combining with more "A". Regulation of Enzyme Activity Cells have built-in control mechanisms to regulate enzyme concentration and activity. Regulation of Protein Synthesis (Genetic Regulation) Enzymes are proteins. You can regulate them by making more or less of them as needed. The topic of regulating protein synthesis is deferred to a later chapter....
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