The Last Universal Common Ancestor: emergence, constitution and genetic legacy of an elusive forerunner
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چکیده
منابع مشابه
Looking for the Last Universal Common Ancestor (LUCA)
Genomic sequences across diverse species seem to align towards a common ancestry, eventually implying that eons ago some universal antecedent organism would have lived on the face of Earth. However, when evolution is understood not only as a biological process but as a general thermodynamic process, it becomes apparent that the quest for the last universal common ancestor is unattainable. Ambig...
متن کاملThe last common bilaterian ancestor.
Many regulatory genes appear to be utilized in at least superficially similar ways in the development of particular body parts in Drosophila and in chordates. These similarities have been widely interpreted as functional homologies, producing the conventional view of the last common protostome-deuterostome ancestor (PDA) as a complex organism that possessed some of the same body parts as modern...
متن کاملReconstruction of the evolutionary history of gene gains and losses since the last universal common ancestor
Gene gains and losses have shaped the gene repertoire of species since the universal last common ancestor to species today. Genes in extant species were gained at different historical times via de novo creation of new genes, duplication of existing genes or transfer from genes of another species (HGT), and get lost gradually. With the increasing number of sequenced genomes, some comparative ana...
متن کاملText S1. Supporting information to: “A universal trend among proteomes indicates an oily last common ancestor”
Ranjan V. Mannige, Charles L. Brooks III and Eugene I. Shakhnovich Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA, USA Departments of Chemistry and Biophysics,University of Michigan, Ann Arbor, MI, USA Department of Molecular Biology, The Scripps Research Institute, La Jolla, CA, USA Center for Theoretical Biological Physics, UC San Diego, La Jolla, CA, USA To w...
متن کاملA Universal Trend among Proteomes Indicates an Oily Last Common Ancestor
Despite progresses in ancestral protein sequence reconstruction, much needs to be unraveled about the nature of the putative last common ancestral proteome that served as the prototype of all extant lifeforms. Here, we present data that indicate a steady decline (oil escape) in proteome hydrophobicity over species evolvedness (node number) evident in 272 diverse proteomes, which indicates a hig...
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ژورنال
عنوان ژورنال: Biology Direct
سال: 2008
ISSN: 1745-6150
DOI: 10.1186/1745-6150-3-29