Advanced

Redox potentials of the blue copper sites of bilirubin oxidases

Christenson, Andreas LU ; Shleev, Sergey LU ; Mano, Nicolas; Heller, Adam and Gorton, Lo LU (2006) In Biochimica et Biophysica Acta - Bioenergetics 1757(12). p.1634-1641
Abstract
The redox potentials of the multicopper redox enzyme bilirubin oxidase (BOD) from two organisms were determined by mediated and direct spectroelectrochemistry. The potential of the T1 site of BOD from the fungus Myrothecium verrucaria was close to 670 mV, whereas that from Trachyderma tsunodae was > 650 mV vs. NHE. For the first time, direct electron transfer was observed between gold electrodes and BODs. The redox potentials of the T2 sites of both BODs were near 390 mV vs. NHE, consistent with previous finding for laccase and suggesting that the redox potentials of the T2 copper sites of most blue multicopper oxidases are similar, about 400 mV (c) 2006 Elsevier B.V. All rights reserved.
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
redox titration, T3 sites, T2, T1, redox potential, bilirubin oxidase, copper enzyme, spectroelectrochemistry
in
Biochimica et Biophysica Acta - Bioenergetics
volume
1757
issue
12
pages
1634 - 1641
publisher
Elsevier
external identifiers
  • wos:000243154000011
  • scopus:33751533743
ISSN
0005-2728
DOI
10.1016/j.bbabio.2006.08.008
language
English
LU publication?
yes
id
fc87f6ed-26b4-4768-b785-417637b0286e (old id 680415)
date added to LUP
2007-12-21 12:58:30
date last changed
2019-06-04 02:26:43
@article{fc87f6ed-26b4-4768-b785-417637b0286e,
  abstract     = {The redox potentials of the multicopper redox enzyme bilirubin oxidase (BOD) from two organisms were determined by mediated and direct spectroelectrochemistry. The potential of the T1 site of BOD from the fungus Myrothecium verrucaria was close to 670 mV, whereas that from Trachyderma tsunodae was > 650 mV vs. NHE. For the first time, direct electron transfer was observed between gold electrodes and BODs. The redox potentials of the T2 sites of both BODs were near 390 mV vs. NHE, consistent with previous finding for laccase and suggesting that the redox potentials of the T2 copper sites of most blue multicopper oxidases are similar, about 400 mV (c) 2006 Elsevier B.V. All rights reserved.},
  author       = {Christenson, Andreas and Shleev, Sergey and Mano, Nicolas and Heller, Adam and Gorton, Lo},
  issn         = {0005-2728},
  keyword      = {redox titration,T3 sites,T2,T1,redox potential,bilirubin oxidase,copper enzyme,spectroelectrochemistry},
  language     = {eng},
  number       = {12},
  pages        = {1634--1641},
  publisher    = {Elsevier},
  series       = {Biochimica et Biophysica Acta - Bioenergetics},
  title        = {Redox potentials of the blue copper sites of bilirubin oxidases},
  url          = {http://dx.doi.org/10.1016/j.bbabio.2006.08.008},
  volume       = {1757},
  year         = {2006},
}