Refer to the figure below. 
Write an equation to express the chemical reaction shown, and explain how this reaction is involved in signal transduction.
Definitions:
Estimated Useful Life
The expected service life of an asset to the present owner
Units-Of-Production
A method of depreciation that allocates the cost of an asset over its useful life based on the amount of production or usage.
Units-Of-Production
A depreciation method that allocates an asset's cost based on its usage, output, or production, rather than the passage of time.
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