There are very few of Ca dependent proteases. I am not sure kinases need metals as cofactors (activation is a different thing; that's signaling). Alkaline phosphatase needs Zn. But I guess this is not as common as the dependence of nucleases on metal ions. In any case we do use a protein inhibitor cocktail while doing extraction.
Summary. 1  Incorporation and corporation cannot be differentiated as one leads to the other. 2  While incorporation is the process, corporation is the organisation formed out of this process.
Corporation Basics. Before we look at the difference between C Corp and S Corp status, we will look at what they have in common. Owners of a corporation are called shareholders, and they elect directors (from among the shareholders) to oversee business operations. The directors hire officers to manage the day-to-day operations.