PLease solve asap Which of the following are characteristics of allosteric enzymes? Choose all that apply….
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Question “PLease solve asap Which of the following are characteristics of allosteric enzymes? Choose all that apply….”
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Answer
Allosteric enzymes are enzymes that change their conformation when they are bound to an effector that alters the binding affinity at another ligand binding location. The allosteric location is the binding site for the effector. One or more of their allosteric sites may exist.
Enzymes, which are biological catalysts, increase the rate of biological reaction by lowering activation energy. The reaction can be done without the enzyme being consumed. Allosteric enzymes contain allosteric locations where effectors can bind. Allosteric activators are effectors that increase protein activity. While allosteric inhibitors decrease protein activity, they are also known as allosteric inhibitors. Allosteric enzymes may act via feedback or feed forward mechanisms.
The Michaelis-Menten kinetics are not followed by the allosteric enzyme. Instead, they have a sigmoidal curve. They show cooperativity which results in saturation. The graph is created by taking the reaction velocity (V or) on the Y-axis, and Concentration of substrate (S] on the X-axis.
These are the different properties of allosteric enzymes:
* They have different binding locations for the ligands, apart from the active site
* They can have more than one unit
* These enzymes do not follow the Michaelis–Menten kinetics and have a sigmoidal curvature
* They undergo changes when the modulator binds with the active site. Modulators can be either homotropic or heterotropic.
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