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2017 ; 14
(131
): ä Nephropedia Template TP
gab.com Text
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English Wikipedia
Direct enzymatic bioelectrocatalysis: differentiating between myth and reality
#MMPMID28637918
Milton RD
; Minteer SD
J R Soc Interface
2017[Jun]; 14
(131
): ä PMID28637918
show ga
Enzymatic bioelectrocatalysis is being increasingly exploited to better
understand oxidoreductase enzymes, to develop minimalistic yet specific biosensor
platforms, and to develop alternative energy conversion devices and
bioelectrosynthetic devices for the production of energy and/or important
chemical commodities. In some cases, these enzymes are able to electronically
communicate with an appropriately designed electrode surface without the
requirement of an electron mediator to shuttle electrons between the enzyme and
electrode. This phenomenon has been termed direct electron transfer or direct
bioelectrocatalysis. While many thorough studies have extensively investigated
this fascinating feat, it is sometimes difficult to differentiate desirable
enzymatic bioelectrocatalysis from electrocatalysis deriving from inactivated
enzyme that may have also released its catalytic cofactor. This article will
review direct bioelectrocatalysis of several oxidoreductases, with an emphasis on
experiments that provide support for direct bioelectrocatalysis versus denatured
enzyme or dissociated cofactor. Finally, this review will conclude with a series
of proposed control experiments that could be adopted to discern successful
direct electronic communication of an enzyme from its denatured counterpart.