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. Author manuscript; available in PMC: 2016 Aug 4.
Published in final edited form as: Biochemistry. 2015 Jul 21;54(30):4652–4664. doi: 10.1021/acs.biochem.5b00573

Scheme 4.

Scheme 4

Reaction Cycle for Benzoate 1,2-Dioxygenase Emerging from the Current Studya,b,c

aRed arrows represent the direction of a conformational shift of the mononuclear iron observed spectroscopically and in crystal structures.

bThere are several possibilities for the cis-diol forming reactions following electron transfer from the Rieske cluster, only one of which is shown.

cAn electron from an external source is required to allow product release.