NAD vs. NADP — What's the Difference?

A testicle.

A coenzyme, C21H28N7O17P3, occurring in most living cells and utilized similarly to NAD but interacting with different metabolites.

A coenzyme, C21H27N7O14P2, occurring in most living cells and utilized alternately with NADH as an oxidizing or reducing agent in various metabolic processes.

A coenzyme similar to NAD and present in most living cells but serves as a reductant in different metabolic processes

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A coenzyme present in most living cells and derived from the B vitamin nicotinic acid; serves as a reductant in various metabolic processes