Results 71 to 80 of about 1,271,647 (216)

ADP-dependent Phosphofructokinases in Mesophilic and Thermophilic Methanogenic Archaea [PDF]

, 2001
Phosphofructokinase (PFK) is a key enzyme of the glycolytic pathway in all domains of life. Two related PFKs, ATP-dependent and PPi-dependent PFK, have been distinguished in bacteria and eucarya, as well as in some archaea.
Kengen, S.W.M., Vos, W.M., de, Verhees, C.H., Tuininga, J.E., Stams, A.J.M., Oost, J., van der   +5 more
core   +1 more source

Ether lipids of planktonic archaea in the marine water column [PDF]

Applied and Environmental Microbiology, 1997
Acyclic and cyclic biphytanes derived from the membrane ether lipids of archaea were found in water column particulate and sedimentary organic matter from several oxic and anoxic marine environments. Compound-specific isotope analyses of the carbon skeletons suggest that planktonic archaea utilize an isotopically heavy carbon source such as algal ...
Sinninghe Damsté, J.S., Hoefs, M.J.L., Schouten, S., King, L.L., Wakeham, S.G., Leeuw, J.W. de   +5 more
openaire   +3 more sources

Benzimidazole Anthelmintic Compounds Albendazole and Fenbendazole Show Distinct Toxicity on the Nitrogen Fixing Bacterium Mesorhizobium loti and Its Symbiosis With Lotus japonicus

Environmental Toxicology, EarlyView.
ABSTRACT Veterinary medicines, which reach the soil mostly through the application of contaminated manures, can affect beneficial soil microorganisms, such as nitrogen‐fixing rhizobia bacteria, which engage in important symbiotic associations with plants.
Polyxeni Gorgia, Stathis Lagos, Christina N. Nikolaou, Nikoleta Basdeki, Christos Papadopoulos, Dimitrios G. Karpouzas, Daniela Tsikou   +6 more
wiley   +1 more source

Effect of the environment on horizontal gene transfer between bacteria and archaea [PDF]

PeerJ, 2017
Background Horizontal gene transfer, the transfer and incorporation of genetic material between different species of organisms, has an important but poorly quantified role in the adaptation of microbes to their environment.
Clara A. Fuchsman, Roy Eric Collins, Gabrielle Rocap, William J. Brazelton   +3 more
doaj   +2 more sources

Land use intensification results in abrupt transitions between extensively and intensively managed grasslands

Functional Ecology, EarlyView.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Understanding whether land use intensification causes regime shifts (i.e. persistent, large changes in ecosystem states) is of key importance for management, particularly if these shifts occur abruptly as thresholds in land use intensity are crossed.
Hugo Saiz, Lena Neuenkamp, Caterina Penone, Klaus Birkhofer, Nico Blüthgen, Steffen Boch, Michael Bonkowski, Francois Buscot, María Felipe‐Lucia, Anna Maria Fiore‐Donno, Markus Fischer, Martin Freitag, Oscar Godoy, Kezia Goldmann, Martin Gossner, Ute Hamer, Norbert Hölzel, Kirsten Jung, Ellen Kandeler, Valentin Klaus, Till Kleinebecker, Sophia Leimer, Sven Marhan, Yvonne Oelmann, Jörg Overmann, Daniel Prati, Swen Renner, Matthias Rillig, Sebastian Seibold, Michael Schloter, Ingo Schoening, Johannes Sikorski, Stephanie Socher, Emily Solly, Ingolf Steffan‐Dewenter, Barbara Stempfhuber, Catrin Westphal, Wolfgang Wilcke, Tesfaye Wubet, Susanne Wurst, Eric Allan   +40 more
wiley   +1 more source

Distinct microbial populations are tightly linked to the profile of dissolved iron in the methanic sediments of the Helgoland mud area, North Sea

Frontiers in Microbiology, 2015
Iron reduction in subseafloor sulfate-depleted and methane-rich marine sediments is currently a subject of interest in subsurface geomicrobiology. While iron reduction and microorganisms involved have been well studied in marine surface sediments, little
Oluwatobi Emmanuel Oni, Oluwatobi Emmanuel Oni, Tetsuro eMiyatake, Sabine eKasten, Sabine eKasten, Tim eRichter-Heitmann, David eFischer, David eFischer, Laura eWagenknecht, Vadim eKsenofontov, Ajinkya eKulkarni, Mathias eBlumers, Sergii eShylin, Sergii eShylin, Benilde eCosta, Göstar eKlingelhöfer, Michael W Friedrich, Michael W Friedrich   +17 more
doaj   +1 more source

S‐Adenosylmethionine (SAM) hydrolases counter increased SAM epimerisation in thermophilic archaea

The FEBS Journal, EarlyView.
S‐Adenosyl‐l‐methionine (SAM) is a vital enzyme cofactor. Epimerisation at the sulfonium centre of biologically active (SS,SCα)‐SAM is driven by heat, yielding biologically inactive (RS,SCα)‐SAM. Here, two novel archaeal SAM hydrolases from the thermophilic Sulfolobus acidocaldarius and the halophilic Haloferax volcanii are shown to cleave (RS,SCα)‐SAM.
Agnes Bartels, Michael K. F. Mohr, Phillip Nußbaum, Marie Joest, Bianca Wassmer, Laurent Rasquin, Sonja‐Verena Albers, Jennifer N. Andexer   +7 more
wiley   +1 more source

Dissolved oxygen shapes the archaeal communities in the seawater of Changjiang Estuary

Frontiers in Environmental Science, 2023
Archaea play a significant role in regulating the biogeochemical processes of marine ecosystems. In this study, the high-throughput sequencing was used to explore the archaeal communities in the seawater from the hypoxic and non-hypoxic zones of the ...
Jianxin Wang, Chunmiao Tian, Dongmei Wu, Rixin Wang   +3 more
doaj   +1 more source

Structural and mutational analysis of Methanosarcina mazei prenylated FMN synthase reveals the basis of its unique prenyl donor substrate specificity

The FEBS Journal, EarlyView.
Some prenylated flavin mononucleotide (prFMN) synthases exceptionally prefer dimethylallyl phosphate (DMAP) over dimethylallyl diphosphate (DMAPP), which is a common prenyl donor substrate for many prenyltransferases. Structural and mutagenic analyses of Methanosarcina mazei prFMN synthase, which prefers DMAP but can also accept DMAPP, elucidated its ...
Sou Fukuhara, Hideaki Unno, Soma Ishimine, Ryuhei Nagata, Tomokazu Ito, Hisashi Hemmi   +5 more
wiley   +1 more source

Crystal structure of human NIF3‐like protein reveals dynamic hexameric assembly with a single divalent metal binding site

The FEBS Journal, EarlyView.
We present the first crystal structures of human NIF3, revealing a dynamic, hexameric ring with a central cavity regulated by flexible insertion domains. Crucially, human NIF3 features a mononuclear zinc‐binding site, marking a distinct evolutionary departure from the dinuclear centers of bacterial homologs.
Elżbieta Wątor‐Wilk, Krzysztof Żak, Piotr Wilk, Paweł Kochanowski, Agnieszka Maślanka, Łukasz Skalniak, Przemysław Grudnik   +6 more
wiley   +1 more source