2. (25 pts) (a.) Design a "new" metalloprotein to bind and transport O2 that is not based on Fe Heme, Non-Heme Fe, or Cu. Select a metal and briefly state why you chose this metal. Show the active site (i.e., include the structure of the ligands at the active site of this protein, etc). (b.) Suppose that an organism adopted your new metalloprotein but modified so that it became a catalase. How might the active site of your new metalloenzyme need to be changed to carry out the catalase reaction? Propose a reaction cycle for this catalase reaction (i.e., based on your modified metalloprotein)