Signal transduction pathway involves three steps that are reception, transduction, and response. Reception includes binding of the signal molecule on the receptors present on plasma membrane; transduction involves activation of several molecules present in the cell, which finally leads to activation of the target molecule. Response appears when the target protein brings about the required change. Transduction step involves a cascade of reactions in which the activation of one molecule catalyzes the activation of other molecule.

Question

A ligand binds to the extracellular portion of a receptor. Another ligand binds to an identical half of the same receptor. When this happens, the two halves come together and the intracellular portion adds phosphates from ATP to tyrosine amino acids it the receptor structure. This passage describes what kind of receptor? Select one: a. A G-protein coupled receptor b. A receptor tyrosine kinase c. A receptor tyrosine phosphatase d. A ligand-gated kinase channel

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Chapter 9, Problem 5TYK

Summary Introduction

Introduction:

Signal transduction pathway involves three steps that are reception, transduction, and response. Reception includes binding of the signal molecule on the receptors present on plasma membrane; transduction involves activation of several molecules present in the cell, which finally leads to activation of the target molecule. Response appears when the target protein brings about the required change. Transduction step involves a cascade of reactions in which the activation of one molecule catalyzes the activation of other molecule.

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