Studies on the heme and H2-uptake reaction from Azotobacter vinelandii bacterial ferritin
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 elec...
| Veröffentlicht in: | Bioelectrochemistry and bioenergetics (Lausanne, Switzerland). - 1999. - 48(1999), 1 vom: 03. Feb., Seite 87-93 |
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| 1. Verfasser: | |
| Weitere Verfasser: | , , , , |
| Format: | Aufsatz |
| Sprache: | English |
| Veröffentlicht: |
1999
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| Zugriff auf das übergeordnete Werk: | Bioelectrochemistry and bioenergetics (Lausanne, Switzerland) |
| Schlagworte: | Journal Article Research Support, Non-U.S. Gov't Heme 42VZT0U6YR Hydrogen 7YNJ3PO35Z Ferritins 9007-73-2 Iron E1UOL152H7 mehr... |
| Zusammenfassung: | 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% H2 and 2% to O2. The activity of nitrogen fixation from the whole cell of A. vinelandii increases greatly by H2 reduction with potentials ranging from -397 to -425 mV vs. NHE, indicating two important roles of H2-uptake reaction of the ferritin in increasing activity of nitrogen fixation and in supplying iron to synthesize nitrogenase |
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| Beschreibung: | Date Completed 14.06.1999 Date Revised 03.11.2019 published: Print Citation Status MEDLINE |
| ISSN: | 0302-4598 |