Name two main protein conformations and give an example of each and the protein’s role within the cell ?

Hello, i add, Amino Acid is produce all a protein kinds in the body.

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1.  Globular proteins.  Lots of enzymes are globular.

2.  Fibrous proteins.  These guys serve as structural elements.

You can look up examples based on those names.  Maybe.

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The conformation of a protein refers to its folded shape. Many proteins and enzymes undergo changes in conformation with they interact with a ligand or substrate molecule. Other proteins undergo a conformational change when they are chemically modified by the attachment or removal of a phosphate group or other covalent modification. 

So, for example, hemoglobin undergoes a significant conformational change when it binds oxygen and goes from deoxyhemoglobin to oxyhemoglobin. The two conformations of hemoglobin are referred to as "relaxed" and "tense". Changes in conformation induced by phosphorylation and dephosphorylation are very important in regulating cell signaling cascades.

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