15 Ch. 6 - activator • Cooperativity and Feedback...

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Chapter 6 Lecture 19:09 Competitive vs. noncompetitive inhibitors Enzymes are very specific to the environment they function in o Temperature o pH o tonicity  measure of the osmotic pressure Competitive inhibition- interferes with active site of enzyme so substrate cannot  bind o Ex: green tea contains ECG which counteracts cell growth Enzymes can be found in membranes, lysosomes, or cytoplasm Noncompetitive inhibition- interferes with allosteric site and changes shape of  enzyme so it cannot bind to substrate o Ex. Snake venom Allostery  allosteric enzymes, allosteric site, allosteric inhibitor, allosteric 
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Unformatted text preview: activator • Cooperativity and Feedback Inhibition o Cooperativity amplification of enzyme response when the enzyme has multiple binding sites which induces a more favorable shape for other binding sites o Feedback Inhibition enough has been made, so it wants to stop the biochemical pathway • Examples of enzymes (-ase): o Catalases break down hydrogen peroxide o Cellulases break down cellulose o Alcohol…starch into sugars, converted into alcohol o Baking…modification of flour for improved baking properties 19:09 19:09...
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15 Ch. 6 - activator • Cooperativity and Feedback...

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