title: Phylogenetic place of a mitochondria-lacking protozoan, Entamoeba histolytica, inferred from amino acid sequences of elongation factor 2'.
abstract: Partial DNA regions encoding a major part of translation elongation factor 2 (EF-2) from a mitochondria-lacking protozoan, Entamoeba histolytica, were amplified by polymerase chain reaction and their primary structures were analyzed. The deduced amino acid sequence was aligned with other eukaryotic and archaebacterial EF-2's, and the phylogenetic relationships among eukaryotes were inferred by the maximum likelihood (ML) method. The ML analyses using four different stochastic models of amino acid substitutions consistently suggest that among eukaryotic species being analyzed, E. histolytica is likely to have diverged from other higher eukaryotes on the early phase of eukaryotic evolution.
authors.affiliation: Department of Oral Microbiology, School of Dentistry, Showa University, Tokyo, Japan.
authors.forename: T
authors.initials: T
authors.lastname: Shirakura
authors.forename: T
authors.initials: T
authors.lastname: Hashimoto
authors.forename: Y
authors.initials: Y
authors.lastname: Nakamura
authors.forename: T
authors.initials: T
authors.lastname: Kamaishi
authors.forename: Y
authors.initials: Y
authors.lastname: Cao
authors.forename: J
authors.initials: J
authors.lastname: Adachi
authors.forename: M
authors.initials: M
authors.lastname: Hasegawa
authors.forename: A
authors.initials: A
authors.lastname: Yamamoto
authors.forename: N
authors.initials: N
authors.lastname: Goto
mesh_terms: D000595:Amino Acid Sequence; D000818:Animals; D001483:Base Sequence; D017931:DNA Primers; D004748:Entamoeba histolytica / Q000145:classification* / Q000235:genetics; D006801:Humans; D008928:Mitochondria; D008969:Molecular Sequence Data; D020652:Peptide Elongation Factor 2; D010445:Peptide Elongation Factors / Q000235:genetics*; D010802:Phylogeny; D017386:Sequence Homology, Amino Acid
chemical_list: D017931:DNA Primers; D020652:Peptide Elongation Factor 2; D010445:Peptide Elongation Factors