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2016-03-10Zeitschriftenartikel DOI: 10.1159/000441656
Structure and Function of Benzylsuccinate Synthase and Related Fumarate-Adding Glycyl Radical Enzymes
Heider, Johann cc
Szaleniec, Maciej cc
Martins, Berta cc
Seyhan, Deniz
Buckel, Wolfgang cc
Golding, Bernard T.
Lebenswissenschaftliche Fakultät
The pathway of anaerobic toluene degradation is initiated by a remarkable radical-type enantiospecific addition of the chemically inert methyl group to the double bond of a fumarate cosubstrate to yield (R)-benzylsuccinate as the first intermediate, as catalyzed by the glycyl radical enzyme benzylsuccinate synthase. In recent years, it has become clear that benzylsuccinate synthase is the prototype enzyme of a much larger family of fumarate-adding enzymes, which play important roles in the anaerobic metabolism of further aromatic and even aliphatic hydrocarbons. We present an overview on the biochemical properties of benzylsuccinate synthase, as well as its recently solved structure, and present the results of an initial structure-based modeling study on the reaction mechanism. Moreover, we compare the structure of benzylsuccinate synthase with those predicted for different clades of fumarate-adding enzymes, in particular the paralogous enzymes converting p-cresol, 2-methylnaphthalene or n-alkanes.
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This publication is with permission of the rights owner freely accessible due to an alliance licence and a national licence (funded by the DFG, German Research Foundation) respectively.
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DOI
10.1159/000441656
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https://doi.org/10.1159/000441656
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<a href="https://doi.org/10.1159/000441656">https://doi.org/10.1159/000441656</a>