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This article lists the genera of the Archaea. The currently accepted taxonomy is based on the List of Prokaryotic names with Standing in Nomenclature (LPSN) [1] and National Center for Biotechnology Information (NCBI). [2] However, in the List provided below, GTDB has precedence unless otherwise noted.
This list of sequenced archaeal genomes contains all the archaea known to have publicly available complete genome sequences that have been assembled, annotated and deposited in public databases. Methanococcus jannaschii was the first archaeon whose genome was sequenced, in 1996.
Archaea are often similar to bacteria in size and shape, although a few have very different shapes, such as the flat, square cells of Haloquadratum walsbyi. [6] Despite this, archaea possess genes and several metabolic pathways that are more closely related to those of eukaryotes, notably for the enzymes involved in transcription and translation.
Detailed phylogenetic and comparative analyses of genome sequences from members of the class Haloarchaea has led to division of this class into three orders, Halobacteriales, Haloferacales and Natrialbales, which can be reliably distinguished from each other as well as all other archaea/bacteria through molecular signatures known as conserved signature indels (CSIs). [7]
The structures of Borg genomes are conserved and distinct from the plasmids and chromosomes of Methanoperedens, as well as other archaeal genomes. [4] Borgs do not contain protein-coding genes that are associated with plasmids or viruses; they also lack rRNA genes, origins of replication, or other vital genes and features that are commonly found within minichromosomes (also known as ...
In taxonomy, Thermococcus is a genus of thermophilic Archaea in the family the Thermococcaceae. [1] Members of the genus Thermococcus are typically irregularly shaped coccoid species, ranging in size from 0.6 to 2.0 μm in diameter. [2] Some species of Thermococcus are immobile, and some species have motility, using flagella as their main mode ...
Asgard archaea are single cell marine microbes that contain branch like appendages and have genes that are similar to eukarya. [1] The asgard archaea superphylum is composed of Thorarchaeota, Lokiarchaeota, Odinarchaeota, and Heimdallarchaeota. [2] Thorarchaeota were first identified from the sulfate-methane transition zone in tidewater ...
The archaea of the genus Ignicoccus have tiny coccoid cells with a diameter of about 2 μm, that exhibit a smooth surface, an outer membrane and no S-layer. [4]They have a previously unknown cell envelope structure—a cytoplasmic membrane, a periplasmic space (with a variable width of 20 to 400 nm, containing membrane-bound vesicles), and an outer membrane (approximately 10 nm wide ...