Results 51 to 60 of about 17,663 (189)

Hydrogen Metabolism in Helicobacter pylori Plays a Role in Gastric Carcinogenesis through Facilitating CagA Translocation

open access: yesmBio, 2016
A known virulence factor of Helicobacter pylori that augments gastric cancer risk is the CagA cytotoxin. A carcinogenic derivative strain, 7.13, that has a greater ability to translocate CagA exhibits much higher hydrogenase activity than its parent ...
Ge Wang   +7 more
doaj   +1 more source

Biohydrogen from Microalgae: Production and Applications

open access: yesApplied Sciences, 2021
The need to safeguard our planet by reducing carbon dioxide emissions has led to a significant development of research in the field of alternative energy sources.
Antonina Rita Limongi   +5 more
doaj   +1 more source

Microbial DNA methylation links rumen transcriptional activity to methane emission divergence in dairy cows

open access: yesiMeta, EarlyView.
Genome‐resolved methylomics uncovers the first DNA methylation atlas of the dairy cow rumen microbiome. Microbial DNA methylation profiles diverge between low‐ and high‐ methane‐emitting dairy cows despite limited taxonomic differences. Differential methylation is linked to transcriptional variation in genes involved in carbon metabolism, hydrogen ...
Xinyue Zhang   +9 more
wiley   +1 more source

Methylacidimicrobium thermophilum AP8, a Novel Methane- and Hydrogen-Oxidizing Bacterium Isolated From Volcanic Soil on Pantelleria Island, Italy

open access: yesFrontiers in Microbiology, 2021
The Favara Grande is a geothermal area located on Pantelleria Island, Italy. The area is characterized high temperatures in the top layer of the soil (60°C), low pH (3–5) and hydrothermal gas emissions mainly composed of carbon dioxide (CO2), methane ...
Nunzia Picone   +11 more
doaj   +1 more source

A Personal Perspective on Metalloprotein Structure and the Future of Macromolecular X‐Ray Crystallography

open access: yesJournal of the Chinese Chemical Society, EarlyView.
While X‐ray crystallography has been the primary method for determining the structures of metalloproteins, cryoEM has taken over this role, illustrated by [4Fe4S]‐cluster containing proteins deposited in the Protein Data Bank. What will be the role for X‐ray crystallography as cryoEM and machine learning methods dominate the initial structural analysis?
Douglas C. Rees
wiley   +1 more source

Presence and expression of hydrogenase specific C-terminal endopeptidases in cyanobacteria

open access: yesBMC Microbiology, 2003
Background Hydrogenases catalyze the simplest of all chemical reactions: the reduction of protons to molecular hydrogen or vice versa. Cyanobacteria can express an uptake, a bidirectional or both NiFe-hydrogenases.
Lindblad Peter   +2 more
doaj   +1 more source

The Microbiome as a Mirror: Distinguishing Healthy Individuals From Chronic Constipated Patients and Identifying Those With Hidden Psychiatric Burden

open access: yesMicrobiota Medicine Research, EarlyView.
Gut microbiota signatures distinguish chronic constipated patients from healthy individuals, supporting noninvasive diagnostic potential. Despite challenges in identifying psychiatric‐related comorbidities, microbial alterations, particularly in neurotransmitter and inflammatory pathways, lay the groundwork for future companion diagnostics and ...
Hongyan Qi   +7 more
wiley   +1 more source

Outer‐Sphere Tuning of Synthetic Iron–Sulfur Clusters Within Nanoscale Cage Frameworks

open access: yesSmall, EarlyView.
Noncovalent encapsulation of a synthetic iron–sulfur cluster within hydrophobic, naphthalenediimide (NDI)‐paneled cages is shown to lead to dramatic changes in the electronic structure and covalency of the Fe─S core. ABSTRACT As atomic‐scale archetypes for multi‐electron transfer, iron–sulfur clusters are compelling candidates for the design of redox ...
Rupal Baliyan   +3 more
wiley   +1 more source

H2-dependent reduction of rubredoxin by FrhAGB hydrogenase in Thermococcus onnurineus NA1

open access: yesApplied Microbiology and Biotechnology
The oxidative stress defense mechanism in the order Thermococcales functions through an electron-transfer cascade that transfers electrons from NAD(P)H to various antioxidant enzymes, utilizing rubredoxin (Rd) as the electron carrier.
Ji-in Yang   +7 more
doaj   +1 more source

H2 Kinetic Isotope Fractionation Superimposed by Equilibrium Isotope Fractionation During Hydrogenase Activity of D. vulgaris Strain Miyazaki

open access: yesFrontiers in Microbiology, 2019
We determined 2H stable isotope fractionation at natural abundances associated with hydrogenase activity by whole cells of Desulfovibrio vulgaris strain Miyazaki F expressing a NiFe(Se) hydrogenase.
Michaela Löffler   +3 more
doaj   +1 more source

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