what are enzymes? proteins, with complex 3-d shapes have an active site which can bind a substrate...
DESCRIPTION
Help Chemical Reactions Occur Notice the enzyme is not used up in the reaction! Only a certain substrate will fit in the active siteTRANSCRIPT
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What Are Enzymes?Proteins, with complex 3-d shapes
Have an active site which can bind a substrate (reactants)
![Page 3: What Are Enzymes? Proteins, with complex 3-d shapes Have an active site which can bind a substrate (reactants)](https://reader031.vdocuments.us/reader031/viewer/2022020301/5a4d1adf7f8b9ab059976955/html5/thumbnails/3.jpg)
Help Chemical Reactions Occur
Notice the enzyme is not used up in the reaction!
Only a certain substrate will fit in the active site
![Page 4: What Are Enzymes? Proteins, with complex 3-d shapes Have an active site which can bind a substrate (reactants)](https://reader031.vdocuments.us/reader031/viewer/2022020301/5a4d1adf7f8b9ab059976955/html5/thumbnails/4.jpg)
How?Allows bonds in substrate to be
broken more easily, with less input of energy
![Page 5: What Are Enzymes? Proteins, with complex 3-d shapes Have an active site which can bind a substrate (reactants)](https://reader031.vdocuments.us/reader031/viewer/2022020301/5a4d1adf7f8b9ab059976955/html5/thumbnails/5.jpg)
Another Example
![Page 6: What Are Enzymes? Proteins, with complex 3-d shapes Have an active site which can bind a substrate (reactants)](https://reader031.vdocuments.us/reader031/viewer/2022020301/5a4d1adf7f8b9ab059976955/html5/thumbnails/6.jpg)
Reaction Energy Diagrams
Activation Energy
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Activation EnergyInput of energy required to break
initial bonds and begin the reactionEven if reaction will release energy
![Page 8: What Are Enzymes? Proteins, with complex 3-d shapes Have an active site which can bind a substrate (reactants)](https://reader031.vdocuments.us/reader031/viewer/2022020301/5a4d1adf7f8b9ab059976955/html5/thumbnails/8.jpg)
Enzymes Lower EaMake the transition state easier to
reach
![Page 9: What Are Enzymes? Proteins, with complex 3-d shapes Have an active site which can bind a substrate (reactants)](https://reader031.vdocuments.us/reader031/viewer/2022020301/5a4d1adf7f8b9ab059976955/html5/thumbnails/9.jpg)
Endergonic vs. Exergonic
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Specificity of Active Sites
Enzymes only catalyze substrates with a complementary shape
Any changes to the shape of the enzyme will disable the activity of the active site