Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
Studies on the heme and H-2-uptake reaction from Azotobacter vinelandii bacterial ferritin
Autore:
Huang, HQ; Lin, QM; Zhang, FZ; Chen, CH; Chen, X; Chen, Z;
Indirizzi:
Xiamen Univ, Dept Biol, Div Biotech, Xiamen 361005, Peoples R China XiamenUniv Xiamen Peoples R China 361005 Xiamen 361005, Peoples R China Xiamen Univ, Res Ctr Environm Sci, Xiamen 361005, Peoples R China Xiamen Univ Xiamen Peoples R China 361005 Xiamen 361005, Peoples R China Natl Univ Singapore, Inst Mol & Cell Biol, Singapore 117690, Singapore Natl Univ Singapore Singapore Singapore 117690 ngapore 117690, Singapore
Titolo Testata:
BIOELECTROCHEMISTRY AND BIOENERGETICS
fascicolo: 1, volume: 48, anno: 1999,
pagine: 87 - 93
SICI:
0302-4598(199902)48:1<87:SOTHAH>2.0.ZU;2-N
Fonte:
ISI
Lingua:
ENG
Soggetto:
IRON RELEASE; BACTERIOFERRITIN; NITROGENASE; KINETICS;
Keywords:
Azotobacter vinelandii; bacterial ferritin; electrode activity; electron-tunnel-heme-Co2+; activity of nitrogen fixation; role of H-2-uptake; iron release;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
25
Recensione:
Indirizzi per estratti:
Indirizzo: Huang, HQ Xiamen Univ, Dept Biol, Div Biotech, Xiamen 361005, Peoples R China Xiamen Univ Xiamen Peoples R China 361005 005, Peoples R China
Citazione:
H.Q. Huang et al., "Studies on the heme and H-2-uptake reaction from Azotobacter vinelandii bacterial ferritin", BIOELECTR B, 48(1), 1999, pp. 87-93

Abstract

Bacterial ferritin of Azotobacter vinelandii (AvBF) is directly able to pick electrons up for iron release from or transfer them for storage to a platinum electrode in the absence of mediator or other reducer. The ferritin containing the structure of heme-Co2+ in part shows weakened activity to electrode and decreases the rate of iron release greatly. A reversible reduction process of the ferritin is observed by the spectral change regularly ranging from 310 to 260 nm under mixed gases containing 98% H-2 and 2% to O-2. The activity of nitrogen fixation from the whole cell of A. vinelandii increases greatly by H-2 reduction with potentials ranging from -397 to -425 mV vs. NHE, indicating two important roles of H-2-uptake reaction of the ferritin in increasing activity of nitrogen fixation and in supplying iron to synthesize nitrogenase. (C) 1999 Elsevier Science S.A. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 24/10/20 alle ore 00:29:45