How is facilitated diffusion with carrier proteins?

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DingDongD

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How is facilitated diffusion with carrier proteins have a Michaelis-Menten enzyme kinetics hyperbolic curve? Isn't there a change in conformation, so would it not be a sinusoidal curve? Thank you ahead.
 
Only enzymes that have allostericity/cooperativity will exhibit a sigmoidal (what I think you meant by sinusoidal) curve. An example of this is Hemoglobin. This isn't the case with carrier proteins for the most part. I would trust the question stem or passage to tell me something that would indicate non- MM enzyme kinetics but otherwise understand that the carrier protein has a receptor that can be saturated which is the reason why the curve levels off at Vmax.
 
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