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Microbial communities in iron-silica-rich microbial mats at deep-sea hydrothermal fields of the Southern Mariana Trough.
Analysis of microbial mats collected at two hydrothermal areas on the ridge of the back-arc spreading centre in the Southern Mariana Trough revealed that the mats were mainly composed of amorphous silica and contained numerous filamentous structures of iron hydroxides.
Comparative complete genome sequence analysis of the amino acid replacements responsible for the thermostability of Corynebacterium efficiens.
The results strongly suggest that the accumulation of these three types of amino acid substitutions correlates with the acquisition of thermostability and is responsible for the greater GC content of C. efficiens.
Biogeography and Biodiversity in Sulfide Structures of Active and Inactive Vents at Deep-Sea Hydrothermal Fields of the Southern Mariana Trough
The microbial community compositions in the sulfide structures of inactive vents were similar to those in seafloor basaltic rocks rather than those in marine sediments or the sulfidic structures of active vents, suggesting that the microbialcommunity compositions on the seafLoor may be constrained by the available energy sources.
Sulfolobus tokodaii sp. nov. (f. Sulfolobus sp. strain 7), a new member of the genus Sulfolobus isolated from Beppu Hot Springs, Japan
The present phylogenetic analysis based on the 16S rRNA gene sequence and DNA–DNA hybridization experiments indicate that this isolate is related to the described Sulfolobus taxon and should be considered a novel species of the genus.
Phylogenetic Diversity of Symbiotic Methanogens Living in the Hindgut of the Lower Termite Reticulitermes speratus Analyzed by PCR and In Situ Hybridization
ABSTRACT A phylogenetic analysis of the sequences of 60 clones of archaeal small-subunit rRNA genes amplified from the termiteReticulitermes speratus revealed that most of them (56 clones) clustered
Molecular characterization of the microbial community in hydrogenetic ferromanganese crusts of the Takuyo-Daigo Seamount, northwest Pacific.
Comparative analysis indicates that over 80% of the total phylotype richness estimates for the crust community were unique as compared with the sediment and seawater communities.
Complete genome sequence of an aerobic thermoacidophilic crenarchaeon, Sulfolobus tokodaii strain7.
Sequence comparison provided evidence suggesting the integration of plasmid, rearrangement of genomic structure, and duplication of genomic regions that may be responsible for the larger genomic size of the S. tokodaii strain7 genome.
Critical regions for assembly of vertebrate nonmuscle myosin II.
Two major electrostatic interactions are proposed that are essential for filament formation of nonmuscle myosin II: the antiparallel interaction between P2 and N1 which is essential for the nucleation step and the parallel interaction between F1 and N2 which is important for the elongation step.
Effects of pH and Temperature on the Composition of Polar Lipids in Thermoplasma acidophilum HO-62
The hypothesis that T. acidophilum adapts to low pHs and high temperatures by extending sugar chains on their cell surfaces, as well as by varying the number of cyclopentane rings is proposed.