Results 21 to 30 of about 1,932 (141)

Evolutionary patterns of archaea predominant in acidic environment

open access: yesEnvironmental Microbiome, 2023
Background Archaea of the order Thermoplasmatales are widely distributed in natural acidic areas and are amongst the most acidophilic prokaryotic organisms known so far.
Rafael Bargiela   +6 more
doaj   +1 more source

Discovery of a novel transcriptional regulator of sugar catabolism in archaea

open access: yesMolecular Microbiology, Volume 120, Issue 2, Page 224-240, August 2023., 2023
A novel transcriptional regulator, GfcR, has been identified that activates the degradation pathways of glucose, fructose, galactose and glycerol in the archaeon Haloferax volcanii. GfcR comprises a phosphoribosyltransferase domain with an N‐terminal helix‐turn‐helix DNA‐binding motif.
Ulrike Johnsen   +9 more
wiley   +1 more source

Cryo-EM single particle analysis with the Volta phase plate

open access: yeseLife, 2016
We present a method for in-focus data acquisition with a phase plate that enables near-atomic resolution single particle reconstructions. Accurate focusing is the determining factor for obtaining high quality data.
Radostin Danev, Wolfgang Baumeister
doaj   +1 more source

Gluco‐oligosaccharides as potential prebiotics: Synthesis, purification, structural characterization, and evaluation of prebiotic effect

open access: yesComprehensive Reviews in Food Science and Food Safety, Volume 22, Issue 4, Page 2611-2651, July 2023., 2023
Abstract Prebiotics have long been used to modulate the gut microbiota and improve host health. Most established prebiotics are nondigestible carbohydrates, especially short‐chain oligosaccharides. Recently, gluco‐oligosaccharides (GlcOS) with 2–10 glucose residues and one or more O‐glycosidic linkage(s) have been found to exert prebiotic potentials ...
Meijun Zeng   +2 more
wiley   +1 more source

Crystal structure of Thermus thermophilus methylenetetrahydrofolate dehydrogenase and determinants of thermostability.

open access: yesPLoS ONE, 2020
The elucidation of mechanisms behind the thermostability of proteins is extremely important both from the theoretical and applied perspective. Here we report the crystal structure of methylenetetrahydrofolate dehydrogenase (MTHFD) from Thermus ...
Fernando Maiello   +5 more
doaj   +1 more source

Ubiquitin found in the archaebacterium Thermoplasma acidophilum

open access: yesFEBS Letters, 1993
Systematic N‐terminal sequencing of the low molecular weight proteins from Thermoplasma acidophilum separated by two‐dimensional polyacrylamide get electrophoresis led to the discovery of a polypeptide with an apparent M r of 4.5 kDa identical as its first 18 amino acid residues to human ubiquitin.
Wolf, S., Lottspeich, F., Baumeister, W.
openaire   +3 more sources

Structure of a AAA+ unfoldase in the process of unfolding substrate

open access: yeseLife, 2017
AAA+ unfoldases are thought to unfold substrate through the central pore of their hexameric structures, but how this process occurs is not known.
Zev A Ripstein   +4 more
doaj   +1 more source

Thermo Sequenase™ DNA Polymerase and T. acidophilum Pyrophosphatase: New Thermostable Enzymes for DNA Sequencing

open access: yesBioTechniques, 1997
A combination of thermostable enzymes has been developed that produces higher quality cycle sequences. Thermo Sequenase™ DNA polymerase is a thermostable enzyme engineered to catalyze the incorporation of ddNTPs with an efficiency several thousandfold ...
P.B. Vander Horn   +12 more
doaj   +1 more source

A broad specificity nucleoside kinase from Thermoplasma acidophilum. [PDF]

open access: yesProteins, 2013
AbstractThe crystal structure of Ta0880, determined at 1.91 Å resolution, from Thermoplasma acidophilum revealed a dimer with each monomer composed of an α/β/α sandwich domain and a smaller lid domain. The overall fold belongs to the PfkB family of carbohydrate kinases (a family member of the Ribokinase clan) which include ribokinases, 1 ...
Elkin SR, Kumar A, Price CW, Columbus L.
europepmc   +4 more sources

Structure of thermoplasmaquinone from Thermoplasma acidophilum [PDF]

open access: yesFEMS Microbiology Letters, 1985
The structure of the methyl-substituted menaquinone (designated thermoplasmaquinone) from the extremely thermophilic and acidophilic archaebacterium Thermoplasma acidophilum was investigated by mass spectrometry and proton nuclear magnetic resonance spectrometry. The results of the present study show that the novel quinone from T.
openaire   +1 more source

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