Table 1
(continued)
Enzyme family
EC
number
Enzyme
Cofactors
Source examples
Reduction potentials/ E
°
′ vs.
NHE
References
(active site), heme
b,
heme c
1.7.2.3
DMSO
reductase
Molybdenum
Rhodobacter
sphaeroides
144 mV (Mo(VI/V)) and
160 mV (Mo(V/IV))
[84]
1.7.2.3
TMAO
reductase
Molybdenum
Escherichia coli
*−360 mV
b
[85]
1.97.1.1
Perchlorate
reductase
Molybdenum
(active site),
[4Fe-4S], [3Fe-4S]
Dechlorosoma sp.
–
–
1.8.1.7
Glutathione
reductase
FAD (and a
disulfide bond as
the active site)
Wheat germ
−255 mV
[86]
1.6.99.7
Nitroreductase
FMN
Enterobacter cloacae
−190 mV
[87]
1.9.98.1
Cytochrome
c
reductase
heme b,
heme c
1 ,
[2Fe-2S] (Rieske)
Porcine heart
*-200 mV (Fe(III/II))
b
[88]
a
Midpoint potentials.
b
Values were estimated from cyclic voltammetry data shown in the respective references. cyt c
cytochrome c; DH
dehydrogenase; DMSO
dimethyl sulfoxide; FAD
flavin adenine dinucleotide; FMN
flavin mononucleotide; NaR
nitrate reductase; NiR
nitrite reductase; NO
nitric oxide; PQQ
pyrroloquinoline quinone; TMSO
trimethylamine N-oxide
310
T. Monteiro et al.