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. Author manuscript; available in PMC: 2016 Mar 1.
Published in final edited form as: Free Radic Biol Med. 2014 Dec 16;80:59–66. doi: 10.1016/j.freeradbiomed.2014.12.012

Scheme 2.

Scheme 2

Proposed mechanism for the decarboxylation mechanism in OxDC. The formation of superoxide is suggested to occur after dioxygen binds to Mn(II) (a), or alternatively, after the initial proton-coupled electron transfer process (PCET) during enzyme turnover. (Permission granted for reproduction by Elsevier license: 3236061008715) (Double Column Image)