Role of molybdate and other transition metals in the accumulation of protochelin by Azotobacter vinelandii
Article Abstract:
Molybdate appears to inhibit ferric reductase in Azotoacter vinelandii. This may explain why protochelin is produced to the exclusion of other catecholate siderophores at high concentrations of molybdate.
Publication Name: Applied and Environmental Microbiology
Subject: Biological sciences
ISSN: 0099-2240
Year: 2000
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Formation of poly(hydroxybutyrate-co-hydroxyvalerate) by Azotobacter vinelandii UWD
Article Abstract:
The polyhydoxyalkanoate (PHA)-producing ability of Azotobacter vinelandii strain UWD was evaluated. The results showed that this bacterium could form PHA copolymers containing beta-hydroxybutyrate and beta-hydroxyvalerate in response to growth on glucose as primary carbon source and valerate as a precursor. The proportions of the co-polymers could be altered in response to changes in carbon source:precursor combinations. Computations based on cost of substrates per kilogram of PHA produced showed that strain UWD is a promising candidate for the production of bioplastics.
Publication Name: Applied and Environmental Microbiology
Subject: Biological sciences
ISSN: 0099-2240
Year: 1992
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The catecholate siderophores of Azotobacter vinelandii: their affinity for iron and role in oxygen stress management
Article Abstract:
Research was conducted to examine the role of catecholate siderophores of Azotobacter vinelandii such as tricatecholate protochelin, dicatecholate azotochelin and monocatecholate aminochelin in oxygen stress management. Tests showed that A. vinelandii experiences oxidative stress under iron-limited conditions. The siderophores have been found to provide chemical protection from oxidative damages.
Publication Name: Microbiology
Subject: Biological sciences
ISSN: 1350-0872
Year: 1998
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