Fumarase C is an enzyme from E. coli (EFumC) that catalyzes the hydration/dehydration reaction between L-malate and fumarate. It catalyzes the hydration of the double bond to form malate. The hydration reaction continues through a carbanion transition state. It has no known metal ion requirement and has a high degree of homology with eukaryotic enzymes. Its homology with cytosolic and mitochondrial enzymes in eukaryotic cells makes it ideal for research. Through x-ray crystallography it has been shown that the enzyme is comprised of a unusual subunit arrangement composed of a core of 20 α-helices, 5 in each of the subunits, and it is a tetrameric enzyme with each monomer containing approximately 460 residues.
The Debated Fumarase C Active Site
Function
Disease
Relevance
Structural highlights
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