Biochimica et Biophysica Acta (BBA) - Bioenergetics
Volume 1777, Issue 10, October 2008, Pages 1364-1369
Direct electron transfer from graphite and functionalized gold electrodes to T1 and T2/T3 copper centers of bilirubin oxidase
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Abbreviations
BOD
bilirubin oxidase
NI
native intermediate
PI
peroxy intermediate
FR
fully reduced BOD
RF
resting form
DET
direct electron transfer
ET
electron transfer
IET
intra-molecular electron transfer
CV
cyclic voltammogram
Em
midpoint redox potential
ET1, ET2, ET3, and ET2/T3
redox potentials of the T1, T2, T3 sites and the T2/T3 cluster, respectively
ΔEp
peak separation between anodic and cathodic peaks
k0
standard electron transfer rate constant
kDET
heterogeneous DET rate constant
Γ
surface concentration
jcat
biocatalytic current density
maximum biocatalytic current density
Δjcat(+ F−)
differences in biocatalytic current densities in the absence and presence of F−
EDC
N-(3-dimethylaminopropyl)-N′-ethylcarbodiimide hydrochloride
NHS
N-hydroxysuccinimide
AMTP
4-aminothiophenol
MHOL
6-mercapto-1-hexanol
MPA
3-mercaptopropionic acid
DT
1-decanethiol
SPGE
spectrographic graphite electrode
MPA-gold
3-mercaptopropionic acid-modified gold electrode
Keywords
Bilirubin oxidase
Bioelectrocatalysis
O2-electroreduction
Electron transfer kinetics
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