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  • Eubacteria
  • 1990). Eukaryotes are distinguished from Archaea and Eubacteria in many different ways, but most importantly, the cells of eukaryotes display a much greater degree of structural organization and complexity. (tolweb.org)
  • The iconic rooted 3-domains tree of life shows eukaryotes and archaebacteria as separate groups that share a common ancestor to the exclusion of eubacteria. (pnas.org)
  • The rooted universal 3-domains tree of Life ( Fig. 1 A ) based on small subunit (SSU) ribosomal (r)RNA sequences, shows eukaryotes and archaebacteria as monophyletic groups that share a common ancestor to the exclusion of eubacteria ( 1 ). (pnas.org)
  • A ) The rooted 3-domains tree ( 1 ) posits that the archaebacteria, consisting of 2 kingdoms Euryarchaeota and Crenarchaeota (eocytes), are monophyletic and more closely related to the eukaryotes than to eubacteria. (pnas.org)
  • gene
  • 2013). "Gene transfer from bacteria and archaea facilitated evolution of an extremophilic eukaryote. (wikipedia.org)
  • Unlike prokaryotic RNA polymerase that initiates the transcription of all different types of RNA, RNA polymerase in eukaryotes (including humans) comes in three variations, each encoding a different type of gene. (wikipedia.org)
  • The initiation of gene transcription in eukaryotes occurs in specific steps. (wikipedia.org)
  • sequences
  • It received further support from some early analyses of SSU rRNA sequences ( , 8 - , 10 ) and from the identification of an 11-aa insertion in the GTPase domain of the elongation factor 1α (EF-1α, also called EF-Tu) genes of eocytes and eukaryotes ( , 5 , , 6 , , 11 ). (pnas.org)
  • evolution
  • Berney, C. and Pawlowski, J. (2006) A molecular time-scale for eukaryote evolution recalibrated with the continuous microfossil record. (tolweb.org)
  • different
  • It has long been thought that this would also be true for archaeal proteins, and thus several years ago it was summarized that the available results underscore the conviction that N-terminal acetylation is fundamentally different in eukaryotes compared to archaea and bacteria [ 3 ]. (hindawi.com)