Chapter 15, Problem 1RTC

Summary Introduction

To write:

The common features which are shared by most of the cell signaling systems.

Introduction:

Cell signaling is a part of any messaging phenomenon which directs the basic actions of cells and manages all the cellular activities.

Explanation of Solution

The common features are shared by most of the cell signaling systems. Extracellular signals are produced by other signaling cells. The receptor proteins are located on the target cells. Extracellular signaling molecules bind to the cell-surface receptors and generate a conformational modification in the receptor. This change, in turn, results in the intracellular signal transduction processes. It finally modifies the function, cellular metabolism, or gene expression. These intracellular signal transduction pathways are evolutionarily extremely conserved.

Conclusion

Thus, the common feature of cell signaling systems is extracellular signaling molecules bind to the cell-surface receptors and generates a conformational modification in the receptor and produce a signaling cascade.