Results 1 to 10 of about 4,396 (67)

A Closer Look at the FeS Heme Bonds in Azotobacter vinelandii Bacterioferritin: QM/MM and Local Mode Analysis. [PDF]

J Comput Chem
Using the QM/MM method, we analyzed the strength of FeS bonds in heme groups of oxidized and reduced forms of bacterioferritin. The strength of FeS bonds was correlated with bond length, energy density at bond critical point, and charge difference between F and S atoms.
Freindorf M, Kraka E.
europepmc   +2 more sources

The crystal structure of Shethna protein II (FeSII) from Azotobacter vinelandii suggests a domain swap. [PDF]

Acta Crystallogr D Struct Biol
The Azotobacter vinelandii FeSII protein forms an oxygen‐resistant complex with the nitrogenase MoFe and Fe proteins.The Azotobacter vinelandii FeSII protein forms an oxygen‐resistant complex with the nitrogenase MoFe and Fe proteins. FeSII is an adrenodoxin‐type ferredoxin that forms a dimer in solution.
Kabasakal BV, McFarlane CR, Cotton CAR, Schmidt A, Kung A, Lieber L, Murray JW.   +6 more
europepmc   +2 more sources

Two Key Ferredoxins for Nitrogen Fixation Have Different Specificities and Biophysical Properties

Chemistry – A European Journal, EarlyView.
Two ferredoxins, FdC and FdN, are collectively essential for the process of nitrogen fixation by the iron nitrogenase in R. capsulatus. We explore the biophysical factors, through spectroscopic and structural characterizations, which determine ferredoxin functionality and pathway specificity. The structure of FdC (PDB: 9I2A) and model of FdN (AF‐D5ARY6)
Holly Addison, Pascal Pfister, Ana Lago‐Maciel, Tobias J. Erb, Antonio J. Pierik, Johannes G. Rebelein   +5 more
wiley   +1 more source

Metal‐Based Materials for CO2 Conversion in MES and PBS Systems

MetalMat, EarlyView.
Metal‐based materials bridge abiotic and biological systems, enabling efficient CO2‐to‐chemical conversion via enhanced electron transfer in microbial electrosynthesis and photocatalytic biohybrid systems. ABSTRACT Metal‐based materials—including pure metals, alloys, compounds, and MOFs—play pivotal roles in microbial electrosynthesis (MES) and ...
Juan Liu, Liuyang He, Jianrong Zhang, Junjie Zhu   +3 more
wiley   +1 more source

Synthesis, Structure, and Properties of Polyhydroxybutyrate Derived from Azotobacter Vinelandii N‐15

ChemistryOpen, EarlyView.
The bacterium Azotobacter vinelandii N15 synthesizes polyhydroxybutyrate (PHB) from sugar production waste. The study reveals the molecular composition, crystallinity, and thermal behavior of the synthesized biopolymer. Mechanical tests demonstrated high tensile strength and relatively low elongation at break. These properties highlight PHB's potential
Yang Liu, Dongwei Li, Xianghai Ran, Wei Nie, Ihor Semeniuk, Nataliia Koretska   +5 more
wiley   +1 more source

ModE Regulates Alternative Nitrogenase Expression in the Methanogen Methanosarcina acetivorans

Molecular Microbiology, EarlyView.
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

Synthesis, function, and genetic variation of sorgoleone, the major biological nitrification inhibitor in sorghum

Crop Science, Volume 65, Issue 3, May/June 2025.
Abstract Sorghum is the third most important food crop, grown on nearly 40 million ha globally, and is known for its resilience under unfavorable conditions. Sorghum is reported to have a strong biological nitrification inhibition (BNI) capacity in root systems, a plant function that suppresses soil nitrifier activity, which in turn prevents the ...
Sakiko Okumoto, Bal Maharjan, Nithya Rajan, Jing Xi, Scott R Baerson, William L Rooney, Michael J. Thomson, Damaris A Odeny, Tadashi Yoshihashi, Josh V Vermaas, Guntur V Subbarao   +10 more
wiley   +1 more source

Analysis of carbohydrates and glycoconjugates by matrix‐assisted laser desorption/ionization mass spectrometry: An update for 2021–2022

Mass Spectrometry Reviews, Volume 44, Issue 3, Page 213-453, May/June 2025.
Abstract The use of matrix‐assisted laser desorption/ionization (MALDI) mass spectrometry for the analysis of carbohydrates and glycoconjugates is a well‐established technique and this review is the 12th update of the original article published in 1999 and brings coverage of the literature to the end of 2022.
David J. Harvey
wiley   +1 more source

Understanding the P‐Cluster of Vanadium Nitrogenase: an EPR and XAS Study of the Holo vs. Apo Forms of the Enzyme

ChemBioChem, Volume 26, Issue 3, February 1, 2025.
The present study brings a combination of biochemical techniques, electron paramagnetic resonance (EPR) spectroscopy and extended X‐ray absorption fine structure (EXAFS) data to help to understand the P‐cluster of nitrogenases, in particular the differences between the holo and apo‐forms of the nitrogenase VFe protein.
Isis M. Wahl, Kushal Sengupta, Maurice van Gastel, Laure Decamps, Serena DeBeer   +4 more
wiley   +1 more source

Soil inoculation with nitrogen‐fixing bacteria to supplement maize fertilizer need

Agronomy Journal, Volume 117, Issue 1, January/February 2025.
Abstract Nitrogen (N) is an essential plant nutrient, but low and variable plant‐available N levels in agricultural soils often limit maximum grain production. The objective of this study was to determine if a free‐living nitrogen‐fixing bacterial inoculant (NFI) could supply biologically‐fixed N as an additional N source and if this enhances maize ...
Logan P. Woodward, Connor N. Sible, Juliann R. Seebauer, Frederick E. Below   +3 more
wiley   +1 more source