enzymes models of action

enzymes models of action - 18th October Enzyme Action...

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Enzyme Action Learning objective : to describe different models for enzyme action and to investigate factors which control the rate of an enzyme reaction 18 th October
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Lock and Key
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Lock and Key However certain substances can bind to the enzyme at sites other than the Active site and modify its activity (inhibitors/co-factors) Idea that the enzyme is flexible
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Induced Fit
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Enzyme reactions enzyme + substrate enzyme-substrate complex
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Enzyme reactions enzyme + substrate enzyme-substrate complex E +S ES
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Enzyme reactions enzyme + product enzyme-substrate complex E +P ES enzyme + substrate enzyme-substrate complex E +S ES
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Enzyme activity How fast an enzyme is working Rate of Reaction
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Enzyme activity How fast an enzyme is working Rate of Reaction Rate of Reaction = Amount of substrate changed (or amount product formed) in a given period of time.
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Rate of Reaction Enzyme activity Variable you are looking at
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Enzyme activity Four Variables
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Enzyme activity Four Variables Temperature pH Enzyme Concentration Substrate Concentration
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Rate of Reaction Temperature
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Rate of Reaction Temperature 0 20 30 50 10 40 60
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Rate of Reaction Temperature 0 20 30 50 10 40 60 40 o C - denatures 5- 40 o C Increase in Activity <5 o C - inactive
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This note was uploaded on 11/07/2011 for the course BIOLOGY 100 taught by Professor Staff during the Winter '08 term at BYU.

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enzymes models of action - 18th October Enzyme Action...

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