superkingdom


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superkingdom

either of two major taxonomic grouping (PROKARYOTES, EUKARYOTES) into which are placed all living ORGANISMS in some older classifications. see CLASSIFICATION, KINGDOM.
References in periodicals archive ?
The study looked at protein structures in viruses and across all superkingdoms, or domains, of life: from the single-celled microbes known as bacteria and archaea, to eukaryotes, a group that includes animals, plants, fungi and all other living things.
Figure 2 presents the distribution of marine families with AA in phylogenetic tree of Viridiplantae kingdom, Eukaryota superkingdom, and Bacteria superkingdom.
These phylogenetic statements provide additional strong support to the early origin of the archaeal superkingdom prior to the divergence of the shared common ancestor of Bacteria and Eukarya.
The five-kingdom system does include prokaryotic and eukaryotic "superkingdoms," and classifies Bacteria and Archaebacterta as subkingdoms (Margulis & Schwarz, 1998).
By that time, detailed comparisons of organisms made possible by powerful scanning electron microscopes had revealed that all of Earth's life forms could be grouped into two "superkingdoms" based on cellular structure: the eukaryotes, which have cells with a well-formed nucleus, and the prokaryotes, whose cells lack a nucleus.
The spread of each trait in a superkingdom was calculated by an f-value indicating the number of proteomes/ functionomes harboring a trait divided by the total number of proteomes/functionomes in that organismal group.
Previous analyses suggested that gene duplications and rearrangements were abundant during the evolution of eukaryal superkingdom and played an important role in tailoring the eukaryotic genomes [16,49].
It is thought that the cellular response to environmental stress is highly conserved among all three superkingdoms, namely, the eukaryotes, the eubacteria, and the archaea [4].
By using a combination of BLAST (1) and sequence mapping with the 454 reference mapper application (version 2.6; Roche), reads were classified into different superkingdoms (Table).
Each of these three types of semiosis presuppose a living being, not necessarily a human being, nor any organism living in one of the superkingdoms, but even a simple cell.
His newly proposed classification disposes of the traditional Prokaryotic and Eukaryotic superkingdoms, which he says unfairly granted Eukaryotes evolutionary seniority.
Each kingdom belongs to one of two "superkingdoms:" prokaryotes (the bacteria), life composed of cells that lack membrane-bounded nuclei and protein-rich chromosomes, and eukaryotes, organisms with nucleated cells.