Results 1 to 10 of about 20,468 (250)

Tryptophan-Tryptophan energy migration as a tool to follow apoflavodoxin folding

, 2008
Submolecular details of Azotobacter vinelandii apoflavodoxin (apoFD) (un)folding are revealed by time-resolved fluorescence anisotropy using wild-type protein and variants lacking one or two of apoFD's three tryptophans.
Mierlo, C.P.M., van, Westphal, Adrie H., van Amerongen, H., Visser, N.V., Amerongen, H., van, van Hoek, Arie, Hoek, A., van, Visser, Antonie J.W.G., van Amerongen, Herbert, van Hoek, A., Visser, Nina V., Westphal, A.H., van Mierlo, Carlo P.M., Visser, A.J.W.G., van Mierlo, C.P.M.   +14 more
core   +1 more source

Identification of Regulatory Genes and Metabolic Processes Important for Alginate Biosynthesis in Azotobacter vinelandii by Screening of a Transposon Insertion Mutant Library

Frontiers in Bioengineering and Biotechnology, 2020
Azotobacter vinelandii produces the biopolymer alginate, which has a wide range of industrial and pharmaceutical applications. A random transposon insertion mutant library was constructed from A.
Mali Mærk, Øyvind M. Jakobsen, Håvard Sletta, Geir Klinkenberg, Anne Tøndervik, Trond E. Ellingsen, Svein Valla, Helga Ertesvåg   +7 more
doaj   +1 more source

Nitrogenaseless Mutants of Azotobacter vinelandii [PDF]

Proceedings of the National Academy of Sciences, 1970
Mutants of Azotobacter which grow normally on excess ammonia under a variety of conditions and which grow slowly or not at all on atmospheric nitrogen have been isolated. Extracts of these strains have low or no detectable nitrogenase activity. There are three classes of mutants. Cell-free preparations of members of the first class possess
G J, Sorger, D, Trofimenkoff
openaire   +2 more sources

The oxygen‐sensing FixLJ represses nitrogen fixation in Rhodopseudomonas palustris in response to oxygen

mLife, EarlyView.
Abstract Biological nitrogen fixation in symbiotic diazotrophs is subject to oxygen regulation by an oxygen‐sensing FixLJ two‐component system under micro‐oxic conditions. However, it remains unclear whether this mechanism is conserved in free‐living diazotrophs.
Lingwei Cui, Yan Zeng, Mengmei Wang, Lu Huang, Zheyi Wang, Ying Liu, Yanning Zheng   +6 more
wiley   +1 more source

Mutagenic Survey of Key Residues of NifB Involved in Radical SAM‐Dependent Nitrogenase Cofactor Assembly

ChemBioChem, Volume 27, Issue 11, 15 June 2026.
NifB uses an RS–K1–K2 triad to assemble the L‐cluster, a [Fe8S9C] precursor of the nitrogenase cofactor. The RS module cleaves SAM to form the 5′‐dA radical, K1 serves structural/SAM‐sensing roles, and K2 drives radical‐dependent fusion with K1. SAM‐anchoring residues link SAM binding to cluster fusion, while termini and surface residues regulate ...
Calder Duffin, Robert Quechol, Yimo Yang, Chi Chung Lee, Yilin Hu, Markus W. Ribbe   +5 more
wiley   +1 more source

Functional Nitrogenase Cofactor Maturase NifB in Mitochondria and Chloroplasts of Nicotiana benthamiana

mBio, 2022
Engineering plants to synthesize nitrogenase and assimilate atmospheric N2 will reduce crop dependency on industrial N fertilizers. This technology can be achieved by expressing prokaryotic nitrogen fixation gene products for the assembly of a functional
Xi Jiang, Diana Coroian, Emma Barahona, Carlos Echavarri-Erasun, Rocío Castellanos-Rueda, Álvaro Eseverri, Jose A. Aznar-Moreno, Stefan Burén, Luis M. Rubio   +8 more
doaj   +1 more source

Alginato bacteriano: aspectos tecnológicos, características e produção Bacterial alginate: technological aspects, characteristics and production

Química Nova, 2008
Alginate is a biopolymer used for a variety of industrial applications, for example, in the textiles, cosmetics, foods, agricultural and biotechnological industries.
Crispin Humberto Garcia-Cruz, Ulisses Foggetti, Adriana Navarro da Silva   +2 more
doaj   +1 more source

Formulation of Bacillus and Azotobacter Consortia in Liquid Cultures: Preliminary Research on Microbes-Coated Urea

International Journal of Agriculture System, 2020
The spore-forming Bacillus and cysts forming Azotobacter are Plant Growth Promoting Rhizobacteria which has been used as biofertilizer in sustainable agriculture since they tolerant to dried soil. Drought resistant microbes will be useful to coat urea in
Reginawanti Hindersah, Mieke Rochimi Setiawati, Priyanka Asmiran, Betty Natalie Fitriatin   +3 more
doaj   +1 more source

RESPONSE OF CUCUMBER AND OKRA TO COMBINED APPLICATION OF AZOTOBACTER TRANSFORMANTS AND CHEMICAL NITROGEN FERTILIZER [PDF]

Journal of Plant Production, 2008
The present investigation was carried out (Lab. study) in microbial genetics lab., Genetic Dept., Minia University and a field study was carried out at Sakha agriculture research station farm during the two successive summer season of 2004 and 2005.     
O. Dakhly, K. Abd Elaziz, Manal Abd Allah, E. Hassan   +3 more
doaj   +1 more source

Comparison of five bacterial strains producing siderophores with ability to chelate iron under alkaline conditions

AMB Express, 2019
Iron deficiency is one of the main causes of chlorosis in plants, which leads to losses in field crops quality and yield. The use of synthetic chelates to prevent or correct iron-deficiency is not satisfactory mainly due to their poor biodegradability ...
Carlos M. H. Ferreira, Ângela Vilas-Boas, Cátia A. Sousa, Helena M. V. M. Soares, Eduardo V. Soares   +4 more
doaj   +1 more source