enzyme activity
Post on 05-Jan-2016
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Enzymes
• Proteins• Act as catalysts to speed up chemical
reactions• Are specific – each enzyme can carry out
only one type of reaction.• Animation of Enzyme activity
– http://highered.mcgraw-hill.com/sites/0072495855/student_view0/chapter2/animation__how_enzymes_work.html
Active Site
Enzyme Substrate
+ =Enzyme-Substrate Complex
++Enzyme
Products
Inhibitors
• Slow down chemical reactions.– Competitive inhibitors compete with
substrates for the active site– Allosteric inhibitors change the shape of the
active site so the substrate can’t attach to the enzyme
Competitive
Inhibitor
Substrate Enzyme
Inhibitor blocks active site stopping enzyme activity.
Enzyme
+Allosteric
Inhibitor
Active Site shape changed No connection
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