Spectroelectrochemical investigation of Azotobacter vinelandii bacterial ferritin
被引:7
作者:
Huang, HQ
论文数: 0引用数: 0
h-index: 0
机构:
Xiamen Univ, Dept Biol, Xiamen 361005, Peoples R ChinaXiamen Univ, Dept Biol, Xiamen 361005, Peoples R China
Huang, HQ
[1
]
Zhang, FZ
论文数: 0引用数: 0
h-index: 0
机构:Xiamen Univ, Dept Biol, Xiamen 361005, Peoples R China
Zhang, FZ
Xu, LS
论文数: 0引用数: 0
h-index: 0
机构:Xiamen Univ, Dept Biol, Xiamen 361005, Peoples R China
Xu, LS
Lin, QM
论文数: 0引用数: 0
h-index: 0
机构:Xiamen Univ, Dept Biol, Xiamen 361005, Peoples R China
Lin, QM
Huang, JW
论文数: 0引用数: 0
h-index: 0
机构:Xiamen Univ, Dept Biol, Xiamen 361005, Peoples R China
Huang, JW
Zeng, D
论文数: 0引用数: 0
h-index: 0
机构:Xiamen Univ, Dept Biol, Xiamen 361005, Peoples R China
Zeng, D
机构:
[1] Xiamen Univ, Dept Biol, Xiamen 361005, Peoples R China
[2] Xiamen Univ, Res Ctr Environm Sci, Xiamen 361005, Peoples R China
[3] Xiamen Univ, Dept Chem, Xiamen 361005, Peoples R China
来源:
BIOELECTROCHEMISTRY AND BIOENERGETICS
|
1998年
/
44卷
/
02期
关键词:
Azotobacter vinelandii;
bacterial ferritin;
reduction potential;
electron-tunnel-heme and kinetics of iron release;
spectra and mediatorless;
D O I:
10.1016/S0302-4598(97)00098-6
中图分类号:
Q5 [生物化学];
Q7 [分子生物学];
学科分类号:
071010 ;
081704 ;
摘要:
Bacterial ferritin of Azotobacter vinelandii (AvBF) contains a function in accepting electrons from platinum electrode directly for complete iron release in the absence of a mediator. The reduction potentials of electron tunnels of -125, -310, and -370 mV for iron release are determined by direct spectroelectrochemical technique, which suggests which should be defined as midpoint potentials of electron-tunnel-heme on the surface of protein shell. A kinetic study for complete iron release by the electrode reduction at -600 mV fits the zero-order reaction law. (C) 1998 Elsevier Science S.A.