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Articles on Crenarchaeota
Analysis of synonymous codon usage in Aeropyrum pernix K1 and other Crenarchaeota microorganisms.
In this study, a comparative analysis of the codon usage bias was performed in Aeropyrum pernix K1 and two other phylogenetically related Crenarchaeota microorganisms (i.e., Pyrobaculum aerophilum str. IM2 and Sulfolobus acidocaldarius DSM 639). The results indicated that the synonymous codon usage...
Diversity of Archaea in marine sediments from Skan Bay, Alaska, including cultivated methanogens, and description of Methanogenium boonei sp...
We employed a multidisciplinary approach that combined culture-dependent and -independent analyses with geochemical measurements in the sediments of Skan Bay, Alaska (53 degrees N, 167 degrees W), to investigate methanogenesis there. Cultivation-independent analyses of the archaeal community reveale...
Clusters of orthologous genes for 41 archaeal genomes and implications for evolutionary genomics of archaea
Novel soil lineages of Archaea are present in semi-arid soils of eastern Australia.
The diversity of Archaea was studied in vertisolic and loam soils of a semi-arid region in Australia. Sampling was undertaken at an agricultural site, two grassland environments, and a brigalow (Acacia harpophylla) woodland. Archaeal community structure was profiled using amplified ribosomal DNA res...
Metagenomic studies reveal the critical and wide-ranging ecological importance of uncultivated Archaea: the role of ammonia oxidizers.
Microbial genome sequencing has entered a new phase, where DNA sequence information is gathered from entire microbial communities (metagenomics or environmental genomics) rather than from individual microorganisms. By providing access to the genetic material of vast numbers of organisms, most of whi...
Orthologs of the small RPB8 subunit of the eukaryotic RNA polymerases are conserved in hyperthermophilic Crenarchaeota and "Korarchaeota".
We report that orthologs of RPB8 are encoded in all sequenced genomes of hyperthermophilic Crenarchaeota and a recently sequenced "korarchaeal" genome, but not in Euryarchaeota or the mesophilic crenarchaeon Cenarchaeum symbiosum. These findings suggest that all 12 core subunits of eukaryotic RNAPs...
CC1, a novel crenarchaeal DNA binding protein.
We performed a biochemical screen for novel nucleic acid binding proteins present in cell extracts of T. tenax. An assay for proteins capable of binding to a single-stranded DNA oligonucleotide resulted in identification of three proteins. The first protein, Alba, has been shown previously to bind s...
Crystal structure of AFV3-109, a highly conserved protein from crenarchaeal viruses.
Phylogenetic diversity of planktonic archaea in the estuarine region of East China Sea
I (MGI) and Marine Group II (MGII) which are affiliated with the phyla Crenarchaeota and Euryarchaeota, respectively. MGI clones dominate both libraries with 20 MGI sequences obtained. The majority of sequences are closely related to uncultured marine archaea except for two sequences of which the ne...
Phylogenomic analysis of proteins that are distinctive of Archaea and its main subgroups and the origin of methanogenesis.
We have carried out comprehensive analyses on each open reading frame (ORFs) in the genomes of 11 archaea (3 Crenarchaeota--Aeropyrum pernix, Pyrobaculum aerophilum and Sulfolobus acidocaldarius; 8 Euryarchaeota--Pyrococcus abyssi, Methanococcus maripaludis, Methanopyrus kandleri, Methanococcoides b...