Results 41 to 50 of about 4,822 (171)

Archaeal Chromatin Proteins Cren7 and Sul7d Compact DNA by Bending and Bridging

open access: yesmBio, 2020
Archaeal chromatin proteins Cren7 and Sul7d from Sulfolobus are DNA benders. To better understand their architectural roles in chromosomal DNA organization, we analyzed DNA compaction by Cren7 and Sis7d, a Sul7d family member, from Sulfolobus islandicus ...
Zhenfeng Zhang   +7 more
doaj   +1 more source

Crystal structures of PCNA1 and PCNA2 from Aeropyrum pernix: implications for a distorted heterotrimeric sliding clamp

open access: yesActa Crystallographica Section F, Volume 82, Issue 6, Page 216-221, June 2026.
Crystal structures of A. pernix PCNA1 (1.60 Å resolution) and PCNA2 (2.17 Å resolution) are reported. High‐resolution analysis reveals a rare nonproline cis‐peptide bond in PCNA1 that may cause steric hindrance at the subunit interface, suggesting a distorted or symmetry‐broken heterotrimeric PCNA ring.Aeropyrum pernix is a hyperthermophilic archaeon ...
Tong Wang   +3 more
wiley   +1 more source

Identification of a crenarchaeal orthologue of Elf1: implications for chromatin and transcription in Archaea

open access: yesBiology Direct, 2009
The transcription machineries of Archaea and eukaryotes are similar in many aspects, but little is understood about archaeal chromatin and its role in transcription.
Kelly Steven   +3 more
doaj   +1 more source

Lysine Methylation Modulates the Interaction of Archaeal Chromatin Protein Cren7 With DNA

open access: yesFrontiers in Microbiology, 2022
Cren7 and Sis7d, two chromatin proteins from Sulfolobus islandicus, undergo extensive methylations at multiple lysine residues to various extents. Whether this highly conserved protein serves an epigenetic role in the regulation of the structure and ...
Niannian Ding   +8 more
doaj   +1 more source

A Biotechnological Approach to Enzyme‐Based Fertilisers: Immobilisation of Acid Phosphatases

open access: yesMicrobial Biotechnology, Volume 19, Issue 6, June 2026.
The immobilization performance of M2‐32 varied with clay type, with palygorskite providing the highest catalytic reaction and stability. After immobilization, the enzyme preserved its broad pH and temperature tolerance. Neither the free nor the immobilized protein produced measurable changes in the rhizosphere microbial diversity.
María‐Isabel Recio   +4 more
wiley   +1 more source

The Genome ofSulfolobus acidocaldarius, a Model Organism of theCrenarchaeota [PDF]

open access: yesJournal of Bacteriology, 2005
ABSTRACTSulfolobus acidocaldariusis an aerobic thermoacidophilic crenarchaeon which grows optimally at 80°C and pH 2 in terrestrial solfataric springs. Here, we describe the genome sequence of strain DSM639, which has been used for many seminal studies on archaeal and crenarchaeal biology.
Chen, Lanming   +10 more
openaire   +3 more sources

The deep biosphere in terrestrial sediments in the Chesapeake Bay area, Virginia, USA

open access: yesFrontiers in Microbiology, 2011
For the first time quantitative data on the abundance of Bacteria, Archaea and Eukarya in deep terrestrial sediments are provided using multiple methods (total cell counting, quantitative real-time PCR (Q-PCR) and catalyzed reporter deposition ...
Anja eBreuker   +3 more
doaj   +1 more source

Bacterial Diversity and Functional Dynamics in the Soybean (Glycine max L.) Rhizosphere Under Different Organic Fertilisation

open access: yesEnvironmental Microbiology Reports, Volume 18, Issue 3, June 2026.
Soybean (Glycine max L.) rhizosphere responses to organic fertilisation remain unknown. This study used 16S rRNA sequencing to assess microbial diversity under cattle dung and poultry manure. Results showed distinct community shifts, improved soil nutrients and stable core metabolic functions, highlighting organic inputs as sustainable strategies for ...
Ijeoma Emelda Osuji   +2 more
wiley   +1 more source

Contrasting Roles of Archaeal Core Clusters in Soil Nitrification of Northeast China’s Black Soil Region

open access: yesAgronomy
The black soil region of Northeast China is crucial for agricultural productivity. Ammonia-oxidizing archaea (AOA) are key indicators of soil nitrification in this region, yet it remains unclear whether this process is driven by the entire community or ...
Feng Wang   +8 more
doaj   +1 more source

Large-scale distribution and activity of prokaryotes in deep-sea surface sediments of the Mediterranean Sea and the adjacent Atlantic Ocean.

open access: yesPLoS ONE, 2013
The deep-sea represents a substantial portion of the biosphere and has a major influence on carbon cycling and global biogeochemistry. Benthic deep-sea prokaryotes have crucial roles in this ecosystem, with their recycling of organic matter from the ...
Donato Giovannelli   +5 more
doaj   +1 more source

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