Results 81 to 90 of about 15,225 (252)

A Two‐Protein Chemoreceptor Complex Regulates Oxygen Thresholds in Bacterial Magneto‐Aerotaxis

Advanced Science, Volume 12, Issue 34, September 11, 2025.
Magnetotactic bacteria align with Earth's magnetic field, helping them migrate toward low‐oxygen environments. This study reveals how Magnetospirillum gryphiswaldense uses a specialized flavin adenine dinucleotide (FAD)‐dependent chemoreceptor, composed of two interacting proteins, for precise navigation in oxygen gradients.
Julian Herz, Carina Weigel, Leonie Scheder, Raz Zarivach, Itay Algov, Yonatan Chemla, Felix Popp, Cornelius Riese, Mohammad A. Charsooghi, Lital Alfonta, Michael M. Meijler, Dirk Schüler, Damien Faivre, Daniel Pfeiffer   +13 more
wiley   +1 more source

Effect of native strains of plant growth promoting rhizobacteria on growth and yield of Isabgol (Plantago ovata)

The Indian Journal of Agricultural Sciences, 2016
An experiment was conducted to evaluate the growth promotion in isabgol (Plantago ovata Forsk.) with native rhizobacteria strains (ISB-2, ISB-5, ISB-8, ISB-9, ISB-10, ISB-125, ISB-15 and ISB-28) isolated from the rhizospheric soils collected from ...
BRIJESH K MISHRA, BALRAJ SINGH, J K RANJAN, P N DUBEY, K KANT, ARUNABH JOSHI   +5 more
doaj   +1 more source

The unphosphorylated EIIA(Ntr) protein represses the synthesis of alkylresorcinols in Azotobacter vinelandii. [PDF]

PLoS ONE, 2015
Upon encystment induction, Azotobacter vinelandii produces the phenolic lipids alkylresorcinols (ARs) that are structural components of the cysts. The enzymes responsible for the ARs synthesis are encoded in the arsABCD operon, whose expression is ...
Luis Felipe Muriel-Millán, Soledad Moreno, Yanet Romero, Leidy Patricia Bedoya-Pérez, Miguel Castañeda, Daniel Segura, Guadalupe Espín   +6 more
doaj   +1 more source

The Siderophore Metabolome of Azotobacter vinelandii [PDF]

Applied and Environmental Microbiology, 2016
ABSTRACT In this study, we performed a detailed characterization of the siderophore metabolome, or “chelome,” of the agriculturally important and widely studied model organism Azotobacter vinelandii . Using a new high-resolution liquid chromatography-mass spectrometry (LC-MS) approach, we found over 35 ...
Oliver, Baars, Xinning, Zhang, François M M, Morel, Mohammad R, Seyedsayamdost   +3 more
openaire   +2 more sources

Mycobacterium tuberculosis sulfurtransferase SseA is activated by its neighboring gene product Rv3284

FEBS Letters, Volume 599, Issue 16, Page 2362-2376, August 2025.
Tuberculosis remains a global health challenge and new therapeutic targets are required. Here, we characterized SseA, a sulfurtransferase from Mycobacterium tuberculosis involved in macrophage infection, and its interaction with the newly identified protein SufEMtb that activates SseA enzymatic activity.
Giulia Di Napoli, Alex Fissore, Edoardo Salladini, Eleonora Raccuia, Simonetta Oliaro‐Bosso, Alessia Ruggiero, Rita Berisio, Milagros Medina, Adrian Velazquez‐Campoy, Salvatore Adinolfi, Mauro Marengo   +10 more
wiley   +1 more source

Phosphate solubilization characteristics of efficient nitrogen fixing soil Azotobacter strains

Iranian Journal of Microbiology, 2014
Background and Objectives: Azotobacter is a diazotroph bacterium reported to possess various plant growth-promoting characteristics.The aim of this study was to isolate Azotobacter strains capable of fixing nitrogen and effectively hydrolyzing both ...
Rahim Nosrati, Parviz Owlia, Horieh Saderi, Iraj Rasooli, Mohammad AliMalboobi   +4 more
doaj  

Between a Rock and a Soft Place: Biomass δ15N Values of Yellowstone Hot Spring Microbial Communities and Their Potential for Preservation in the Rock Record

Journal of Geophysical Research: Biogeosciences, Volume 130, Issue 8, August 2025.
Abstract Nitrogen isotope (δ15N) values in ancient rocks have been used to interpret the presence of nitrogen metabolisms and fixed N availability across the Archean and Paleoproterozoic eons. However, how δ15N signals produced by nitrogen metabolisms of microbial communities, the impact of the geochemical environments they live in on those signals ...
J. R. Havig, T. L. Hamilton
wiley   +1 more source

Evaluation of the Efficacy of Two New Biotechnological-Based Freeze-Dried Fertilizers for Sustainable Fe Deficiency Correction of Soybean Plants Grown in Calcareous Soils

Frontiers in Plant Science, 2019
Currently, fertilization with synthetic chelates is the most effective agricultural practice to prevent iron (Fe) deficiencies in crops, especially in calcareous soils. Because these compounds are not biodegradable, they are persistent in the environment,
Carlos M. H. Ferreira, Carlos M. H. Ferreira, Carlos M. H. Ferreira, Sandra López-Rayo, Juan J. Lucena, Eduardo V. Soares, Eduardo V. Soares, Helena M. V. M. Soares   +7 more
doaj   +1 more source

Phylogenetic differences in content and intensity of periodic proteins [PDF]

, 2005
Many proteins exhibit sequence periodicity, often correlated with a visible structural periodicity. The statistical significance of such periodicity can be assessed by means of a chi-square-based test, with significance thresholds being calculated from ...
Gatherer, D., McEwan, N.R.
core   +1 more source

ModE Regulates Alternative Nitrogenase Expression in the Methanogen Methanosarcina acetivorans

Molecular Microbiology, Volume 124, Issue 2, Page 105-114, August 2025.
During nitrogen fixation, the methanogen Methanosarcina acetivorans produces the alternative vanadium‐nitrogenase and iron‐nitrogenase only when molybdenum is unavailable to support the activity of molybdenum‐nitrogenase. Our work demonstrates that the expression of the alternative nitrogenases in M.
Melissa Chanderban, Daniel J. Lessner
wiley   +1 more source