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Biochemistry
9th Edition
ISBN: 9781319114671
Author: Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Publisher: W. H. Freeman
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
Transcribed Image Text:**Feedback Inhibition**
- ○ The product of a series of reactions acts as an inhibitor for an earlier reaction.
- ○ Hormones control the synthesis of enzymes.
- ○ A regulator binds to the enzyme at a site other than the active site. This binding changes the shape of the enzyme and alters the catalytic ability of the enzyme.
- ○ An inhibitor binds reversibly to the enzyme-substrate complex, blocking the binding of the second substrate to the active site.
- ○ The activity of an enzyme is influenced by the addition or removal of a group that is covalently bonded to the enzyme.
- ○ An inhibitor forms covalent bonds to the active site, permanently blocking it.
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- The effect of on the activity of an enzyme can usually be overcome by increasing the concentration of substrate(s). Choose the best answer the phosphorylation of the R groups of serine (S), threonine (T) and tyrosine (Y) an allosteric effector a noncompetitive inhibitor a competitive inhibitorarrow_forwardCatalysis through proximity and orientation effects involves: (select all that applies) Group of answer choices binding of acidic and/or basic groups in the binding site facilitating chemical reactions by binding substrates close to specific groups binding of substrate in specific, restrictive orientations depending on metal ions for catalysisarrow_forwardHelp with "d" through "h"arrow_forward
- In your everyday lives, look for an example of enzyme activity in action. Briefly state what occurs in each scenario.arrow_forwardWhich of the following about suicide substrates is incorrect? They form a covalent bond with the active site once activated. O Inhibition of suicide inhibitors cannot be overcomed by increased concentration of the substrate. O They are activated by the enzyme-catalyzed reaction mechanism. O They react irreversibly with the enzyme.arrow_forward
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