326 Lectures 5 and 6 - Exam matching, mult choice, fill in...

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Exam – matching, mult choice, fill in the blank. Know the unique number.* Review Session – Tues 5-6PM GEA 100 Lectures 5 and 6 Metabolic Regulation Metabolic regulation is achieved by controlling the activity of one or more enzymes in a given pathway. Metabolism can be regulated by one or a combination of four different mechanisms. 1. N utrient availability ( Lecture 8 ) The nutrient has to be present as the substrate for the enzyme to be active. 2. Physical location of the enzyme/pathway Metabolic pathways/enzymes are physically separated from each other by being located in different organelles . Different enzymes isoforms in tissues. 3. Pretranslational ( Lecture 5, 6 ) Regulating signal transduction, gene expression, mRNA processing 4. Posttranslational ( Lecture 7 ) Adding molecules to the protein which alter its function.
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Nutrient availability Factors influencing nutrient availability. 1. digestion must be able to efficiently breakdown the food to its individual constituent molecules for absorption Example : starch vs fiber 2. absorption
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This note was uploaded on 01/19/2010 for the course NTR 342 taught by Professor Tillman during the Fall '09 term at University of Texas at Austin.

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326 Lectures 5 and 6 - Exam matching, mult choice, fill in...

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