Results 61 to 70 of about 885 (161)

Characterization of anammox hydrazine dehydrogenase, a key N2-producing enzyme in the global nitrogen cycle [PDF]

, 2016
Anaerobic ammonium-oxidizing (anammox) bacteria derive their energy for growth from the oxidation of ammonium with nitrite as the electron acceptor. N2, the end product of this metabolism, is produced from the oxidation of the intermediate, hydrazine ...
Arciero, Attia, Bencini, Bradford, Brown, Cedervall, de Almeida, de Vries, Devol, Dietl, Erickson, Farhoud, Fernández, Hendrich, Hooper, Hooper, Igarashi, Kartal, Kartal, Kartal, Kartal, Kleingardner, Klotz, Kostera, Kurnikov, Lam, Maalcke, Schalk, Shimamura, Shimamura, Terry, van de Graaf, von Wachenfeldt, Yonetani   +33 more
core   +2 more sources

Electroenzymatic Cascades for Nitrogen Upgrading: Beyond Ammonia Towards Value‐Added Nitrogen Chemicals

ChemCatChem, Volume 18, Issue 7, 14 April 2026.
This review maps how electroenzymatic cascades that couple nitrogen‐cycle enzymes with C─N bond forming auxilary enzymes, powered by direct electron transfer (DET) or mediated electron transfer (MET), can upgrade N2 and waste nitrogen streams into value‐added amines, amides, amino acids, and other nitrogen‐based chemicals.
Rohit G. Jadhav, Vamshi Krishna Kamaja, Wassim El Housseini, Monica Brachi, Shelley D. Minteer   +4 more
wiley   +1 more source

Solar‐Driven Methanogenesis through Microbial Ecosystem Engineering on Carbon Nitride

Angewandte Chemie, Volume 136, Issue 48, November 25, 2024.
Microbial ecosystem engineering enables efficient solar‐driven methanogenesis over a biohybrid photocatalyst. The syntrophic coculture of Methanosarcina barkeri (M. barkeri) with the electron transport specialist Geobacter sulfurreducens KN400 (KN400) over carbon nitride produced a semi‐biological photocatalyst for the sunlight‐driven methane synthesis
Shafeer Kalathil, Motiar Rahaman, Erwin Lam, Teresa L. Augustin, Heather F. Greer, Erwin Reisner   +5 more
wiley   +2 more sources

Reductive Transformation of Fe(III) (oxyhydr)Oxides by Mesophilic Homoacetogens in the Genus Sporomusa

Frontiers in Microbiology, 2021
Microbial reduction of iron contributes to the dissolution and transformation of iron-containing minerals in nature. Diverse groups of homoacetogenic bacteria (homoacetogens) have been reported to reduce insoluble Fe(III) oxides, such as hydrous ferric ...
Kensuke Igarashi, Souichiro Kato, Souichiro Kato   +2 more
doaj   +1 more source

A predicted physicochemically distinct sub-proteome associated with the intracellular organelle of the anammox bacterium Kuenenia stuttgartiensis [PDF]

, 2010
Medema MH, Zhou M, van Hijum SAFT, et al. A predicted physicochemically distinct sub-proteome associated with the intracellular organelle of the anammox bacterium Kuenenia stuttgartiensis. BMC Genomics.
Marnix H. Medema, Miaomiao Zhou, Sacha A.F.T. van Hijum, Jolein Gloerich, Hans J.C.T Wessels, Roland J. Siezen, Marc Strous   +6 more
core   +3 more sources

Rieske Iron–Sulfur Cluster Proteins From an Anaerobic Ammonium Oxidizer Suggest Unusual Energetics in Their Parent Rieske/Cytochrome b Complexes

Proteins: Structure, Function, and Bioinformatics, Volume 94, Issue 4, Page 905-920, April 2026.
ABSTRACT Anaerobic ammonium‐oxidizing (anammox) bacteria employ a unique, hydrazine‐based pathway to obtain energy from nitrite and ammonium. These organisms possess distinct Rieske/cytochrome b complexes whose precise role in anammox metabolism remains unclear, but which have been proposed to include the generation of NAD(P)H.
David Hauser, Mandy Sode, Elena A. Andreeva, Kristian Parey, Thomas R. M. Barends   +4 more
wiley   +1 more source

Cytochrome “nanowires” are physically limited to sub-picoamp currents that suffice for cellular respiration

Frontiers in Chemistry
Mineral-respiring microorganisms from hydrothermal vents to terrestrial soils express filaments that electrically connect intracellular respiration to extracellular geochemistry. Filaments dubbed “cytochrome nanowires” (CNs) have been resolved by CryoEM,
Matthew J. Guberman-Pfeffer, Caleb L. Herron   +1 more
doaj   +1 more source

Archaea catalyze iron-dependent anaerobic oxidation of methane [PDF]

, 2016
Anaerobic oxidation of methane (AOM) is crucial for controlling the emission of this potent greenhouse gas to the atmosphere. Nitrite-, nitrate-, and sulfate-dependent methane oxidation is well-documented, but AOM coupled to the reduction of oxidized ...
Ettwig, Katharina F., Jetten, Mike S. M., Kartal, Boran, Keltjens, Jan T., Speth, Daan, Zhu, Baoli   +5 more
core   +1 more source

Distribution and activity of nitrate and nitrite reductases in the microbiota of the human intestinal tract

The FEBS Journal, Volume 293, Issue 6, Page 1624-1642, March 2026.
Nitrate from food is first converted to nitrite by oral bacteria and then further processed in the intestine. The gut microbiota reduces nitrate and nitrite to ammonia or nitric oxide, preventing the formation of carcinogenic nitrosamines. Our analysis highlights Escherichia coli as a key player in this detoxification process, supported by other ...
Natalie Hager, Mélanie Elisabeth Gindt, Marcel Hövels, Jean‐Lou Christian Michel Dorne, Uwe Deppenmeier   +4 more
wiley   +1 more source

Dissecting the Structural and Conductive Functions of Nanowires in Geobacter sulfurreducens Electroactive Biofilms

mBio, 2022
Conductive nanowires are thought to contribute to long-range electron transfer (LET) in Geobacter sulfurreducens anode biofilms. Three types of nanowires have been identified: pili, OmcS, and OmcZ.
Yin Ye, Xing Liu, Kenneth H. Nealson, Christopher Rensing, Shuping Qin, Shungui Zhou   +5 more
doaj   +1 more source