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Where is the receptor for IP3 located? A) on the surface of the SER B) on...

Where is the receptor for IP3 located?

A) on the surface of the SER
B) on the interior of the SER
C) on the plasma membrane
D) on the interior of the RER
E) on the surface of the Golgi complex
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Answer #1

Question: Where is the receptor for IP3 located?

Answer: A) on the surface of the SER

IP3 (inositol trisphosphate) receptors, a large IP3-gated calcium channel are intracellular receptors located on the surface of the SER membrane. The SER membrane contains large integral membrane proteins that function as receptors for inositol trisphosphate (IP3) and serve as calcium channels. IP3 binds to the IP3 receptor located located on the surface of the SER membrane to cause release of calcium from the SER.

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