|
Acido-Lenti-1 RNA Motif
The Acido-Lenti-1 RNA motif describes a predicted non-coding RNA that is found in bacteria within the phyla acidobacteriota and lentisphaerota. It is sometimes found nearby to group II introns, but the reason for this apparent association is unknown. See also *Bacteroidales-1 RNA motif The Bacteroidales-1 RNA motif is a conserved RNA structure identified by bioinformatics. It has been identified only in bacteria within the order (biology) Bacteroidales. Its presumed length is marked by a promoter on one end that conforms to a ... * Collinsella-1 RNA motif * Chloroflexi-1 RNA motif * Flavo-1 RNA motif References External links * Non-coding RNA {{molecular-cell-biology-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Acidobacteriota
Acidobacteriota is a phylum of Gram-negative bacteria. Its members are physiologically diverse and ubiquitous, especially in soils, but are under-represented in culture. Description Members of this phylum are physiologically diverse, and can be found in a variety of environments including soil, decomposing wood, hot springs, oceans, caves, and metal-contaminated soils. The members of this phylum are particularly abundant in soil habitats representing up to 52% of the total bacterial community. Environmental factors such as pH and nutrients have been seen to drive Acidobacteriota dynamics. Many Acidobacteriota are acidophilic, including the first described member of the phylum, ''Acidobacterium capsulatum''. Other notable species are '' Holophaga foetida'', '' Geothrix fermentans'', '' Acanthopleuribacter pedis'' and '' Bryobacter aggregatus''. Since they have only recently been discovered and the large majority have not been cultured, the ecology and metabolism of these bacteri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lentisphaerota
Lentisphaerota is a phylum of bacteria closely related to Chlamydiota and Verrucomicrobiota. It includes two monotypic orders Lentisphaerales and Victivallales. Phylum members can be aerobic or anaerobic and fall under two distinct phenotypes. These phenotypes live within bodies of sea water and were particularly hard to isolate in a pure culture. One phenotype, ''L. marina'', consists of terrestrial gut microbiota from mammals and birds. It was found in the Sea of Japan. The other phenotype (''L. araneosa'') includes marine microorganisms: sequences from fish and coral microbiomes and marine sediment. Phylogeny The phylogeny based on the work of the All-Species Living Tree Project. Taxonomy The currently accepted taxonomy is based on the List of Prokaryotic names with Standing in Nomenclature (LSPN) and the National Center for Biotechnology Information (NCBI). * Phylum Lentisphaerota Cho et al. 2021 ** Class Oligosphaeria Qiu et al. 2013 *** Order Oligosphaerales Qiu e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Non-coding RNA
A non-coding RNA (ncRNA) is a functional RNA molecule that is not translated into a protein. The DNA sequence from which a functional non-coding RNA is transcribed is often called an RNA gene. Abundant and functionally important types of non-coding RNAs include transfer RNAs (tRNAs) and ribosomal RNAs (rRNAs), as well as small RNAs such as microRNAs, siRNAs, piRNAs, snoRNAs, snRNAs, exRNAs, scaRNAs and the long ncRNAs such as Xist and HOTAIR. The number of non-coding RNAs within the human genome is unknown; however, recent transcriptomic and bioinformatic studies suggest that there are thousands of non-coding transcripts. Many of the newly identified ncRNAs have not been validated for their function. There is no consensus in the literature on how much of non-coding transcription is functional. Some researchers have argued that many ncRNAs are non-functional (sometimes referred to as "junk RNA"), spurious transcriptions. Others, however, disagree, arguing instead that many ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bacteria
Bacteria (; singular: bacterium) are ubiquitous, mostly free-living organisms often consisting of one biological cell. They constitute a large domain of prokaryotic microorganisms. Typically a few micrometres in length, bacteria were among the first life forms to appear on Earth, and are present in most of its habitats. Bacteria inhabit soil, water, acidic hot springs, radioactive waste, and the deep biosphere of Earth's crust. Bacteria are vital in many stages of the nutrient cycle by recycling nutrients such as the fixation of nitrogen from the atmosphere. The nutrient cycle includes the decomposition of dead bodies; bacteria are responsible for the putrefaction stage in this process. In the biological communities surrounding hydrothermal vents and cold seeps, extremophile bacteria provide the nutrients needed to sustain life by converting dissolved compounds, such as hydrogen sulphide and methane, to energy. Bacteria also live in symbiotic and parasitic relationsh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phylum
In biology, a phylum (; plural: phyla) is a level of classification or taxonomic rank below kingdom and above class. Traditionally, in botany the term division has been used instead of phylum, although the International Code of Nomenclature for algae, fungi, and plants accepts the terms as equivalent. Depending on definitions, the animal kingdom Animalia contains about 31 phyla, the plant kingdom Plantae contains about 14 phyla, and the fungus kingdom Fungi contains about 8 phyla. Current research in phylogenetics is uncovering the relationships between phyla, which are contained in larger clades, like Ecdysozoa and Embryophyta. General description The term phylum was coined in 1866 by Ernst Haeckel from the Greek (, "race, stock"), related to (, "tribe, clan"). Haeckel noted that species constantly evolved into new species that seemed to retain few consistent features among themselves and therefore few features that distinguished them as a group ("a self-contained unity" ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Acidobacteriota
Acidobacteriota is a phylum of Gram-negative bacteria. Its members are physiologically diverse and ubiquitous, especially in soils, but are under-represented in culture. Description Members of this phylum are physiologically diverse, and can be found in a variety of environments including soil, decomposing wood, hot springs, oceans, caves, and metal-contaminated soils. The members of this phylum are particularly abundant in soil habitats representing up to 52% of the total bacterial community. Environmental factors such as pH and nutrients have been seen to drive Acidobacteriota dynamics. Many Acidobacteriota are acidophilic, including the first described member of the phylum, ''Acidobacterium capsulatum''. Other notable species are '' Holophaga foetida'', '' Geothrix fermentans'', '' Acanthopleuribacter pedis'' and '' Bryobacter aggregatus''. Since they have only recently been discovered and the large majority have not been cultured, the ecology and metabolism of these bacteri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lentisphaerota
Lentisphaerota is a phylum of bacteria closely related to Chlamydiota and Verrucomicrobiota. It includes two monotypic orders Lentisphaerales and Victivallales. Phylum members can be aerobic or anaerobic and fall under two distinct phenotypes. These phenotypes live within bodies of sea water and were particularly hard to isolate in a pure culture. One phenotype, ''L. marina'', consists of terrestrial gut microbiota from mammals and birds. It was found in the Sea of Japan. The other phenotype (''L. araneosa'') includes marine microorganisms: sequences from fish and coral microbiomes and marine sediment. Phylogeny The phylogeny based on the work of the All-Species Living Tree Project. Taxonomy The currently accepted taxonomy is based on the List of Prokaryotic names with Standing in Nomenclature (LSPN) and the National Center for Biotechnology Information (NCBI). * Phylum Lentisphaerota Cho et al. 2021 ** Class Oligosphaeria Qiu et al. 2013 *** Order Oligosphaerales Qiu e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Group II Intron
Group II introns are a large class of self-catalytic ribozymes and mobile genetic elements found within the genes of all three domains of life. Ribozyme activity (e.g., self- splicing) can occur under high-salt conditions ''in vitro''. However, assistance from proteins is required for ''in vivo'' splicing. In contrast to group I introns, intron excision occurs in the absence of GTP and involves the formation of a lariat, with an A-residue branchpoint strongly resembling that found in lariats formed during splicing of nuclear pre-mRNA. It is hypothesized that pre-mRNA splicing (see spliceosome) may have evolved from group II introns, due to the similar catalytic mechanism as well as the structural similarity of the Group II Domain V substructure to the U6/U2 extended snRNA. Finally, their ability to site-specifically insert into DNA sites has been exploited as a tool for biotechnology. For example, group II introns can be modified to make site-specific genome insertions and del ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bacteroidales-1 RNA Motif
The Bacteroidales-1 RNA motif is a conserved RNA structure identified by bioinformatics. It has been identified only in bacteria within the order (biology) Bacteroidales. Its presumed length is marked by a promoter on one end that conforms to an alternate consensus sequence that is common in the phylum Bacteroidota, and its 3′ end is indicated by predicted transcription terminators. It is often located downstream of a gene that encodes the L20 ribosomal subunit, although it is unclear whether there is a functional reason underlying this apparent association. Bacteroidales-1 RNA motif has been reported as a 6S RNA homologue by a report of ''Bacteroides thetaiotaomicron'' transcriptome map. The existence of small product RNAs (pRNAs) that rescue sequestered RNA polymerases In molecular biology, RNA polymerase (abbreviated RNAP or RNApol), or more specifically DNA-directed/dependent RNA polymerase (DdRP), is an enzyme that synthesizes RNA from a DNA template. Using t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Collinsella-1 RNA Motif
The Collinsella-1 RNA motif denotes a particular conserved RNA structure discovered by bioinformatics. Of the six sequences belonging to this motif that were originally identified, five are from uncultivated bacteria residing in the human gut, while only the sixth is in a cultivated species, ''Collinsella aerofaciens''. The evidence supporting the stem-loops designated as "P1" and "P2" is ambiguous. See also *Acido-Lenti-1 RNA motif *Bacteroidales-1 RNA motif The Bacteroidales-1 RNA motif is a conserved RNA structure identified by bioinformatics. It has been identified only in bacteria within the order (biology) Bacteroidales. Its presumed length is marked by a promoter on one end that conforms to a ... * Chloroflexi-1 RNA motif * Flavo-1 RNA motif References External links * Non-coding RNA {{molecular-cell-biology-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chloroflexi-1 RNA Motif
The Chloroflexi-1 RNA motif is a conserved RNA structure detected by bioinformatics within the species '' Chloroflexus aggregans''. ''C. aggregans'' has three predicted Chloroflexi-1 RNAs, which are located nearby to one another. This arrangement might suggest a repetitive element. ''C. aggregans'' is classified as belonging to the bacterial phylum Chloroflexota (formerly Chloroflexi). See also *Acido-Lenti-1 RNA motif *Bacteroidales-1 RNA motif *Collinsella-1 RNA motif The Collinsella-1 RNA motif denotes a particular conserved RNA structure discovered by bioinformatics. Of the six sequences belonging to this motif that were originally identified, five are from uncultivated bacteria residing in the human gut, ... * Flavo-1 RNA motif References External links * Non-coding RNA {{molecular-cell-biology-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flavo-1 RNA Motif
The Flavo-1 RNA motif is a conserved RNA structure that was identified by bioinformatics. The vast majority of Flavo-1 RNAs are found in Flavobacteria, but some were detected in the phylum Bacteroidota, which contains Flavobacteria, or the phylum Spirochaetota, which is evolutionarily related to Bacteroidota. It was presumed that Flavo-1 RNAs function as non-coding RNAs. See also *Acido-Lenti-1 RNA motif *Bacteroidales-1 RNA motif *Collinsella-1 RNA motif *Chloroflexi-1 RNA motif The Chloroflexi-1 RNA motif is a conserved RNA structure detected by bioinformatics within the species '' Chloroflexus aggregans''. ''C. aggregans'' has three predicted Chloroflexi-1 RNAs, which are located nearby to one another. This arrangemen ... References External links * Non-coding RNA {{molecular-cell-biology-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
