Abstract

Our understanding of pyranopterin Mo and W enzymes has increased tremendously since this topic was last covered in Comprehensive Coordination Chemistry II. This review is primarily focused on the active site coordination chemistry of key pyranopterin Mo and pyranopterin W enzymes. The pyranopterin dithiolene (PDT) ligand is unique to these enzymes, and the basic biosynthesis, structure, and function of the PDT is discussed. For each enzyme, we attempt to develop relationships between the metal ion coordination geometry, and enzyme function, mechanism, and electronic structure contributions to catalysis.

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