title: Genomic dispersal of the ets gene family during metazoan evolution.
abstract: Evolutionary homologs of the ets proto-oncogene have been discovered in the genomes of widely divergent eucaryote species from Drosophila to sea urchin to vertebrates. The prototype mammalian ets-1 and ets-2 genes are divided into three coding domains that differ in their rate of accumulation of sequence divergence. An analysis of sequence divergence of ets gene homologs in various species has produced a phylogenetic history of the ets gene family in the context of metazoan evolutionary radiation. A minimum of five duplication events of ets primordial genes were evident, namely (1) a duplication that separates primitive ets genes (Drosophila precursor of 74E, mouse PU.1 and human ELK1) from the ets-1, ets-2, erg ancestor; (2) and (3) two duplications that established separate ets, erg and elg/GABP-alpha lineages which occurred prior to invertebrate-vertebrate divergence; (4) divergence of ets-1 and ets-2 gene family also associated with vertebrate-invertebrate divergence; (5) duplication of ets-1 and ets-2 in Xenopus laevis to produce two ets-1 genes and two ets-2 genes during genomic tetraploidation in the recent ancestry of this species.
authors.affiliation: Laboratory of Molecular Oncology, National Cancer Institute, Frederick, Maryland 21702-1201.
authors.forename: J A
authors.initials: JA
authors.lastname: Lautenberger
authors.forename: L A
authors.initials: LA
authors.lastname: Burdett
authors.forename: M A
authors.initials: MA
authors.lastname: Gunnell
authors.forename: S
authors.initials: S
authors.lastname: Qi
authors.forename: D K
authors.initials: DK
authors.lastname: Watson
authors.forename: S J
authors.initials: SJ
authors.lastname: O'Brien
authors.forename: T S
authors.initials: TS
authors.lastname: Papas
mesh_terms: D000595:Amino Acid Sequence; D000818:Animals; D005075:Biological Evolution; D004330:Drosophila; D006801:Humans; D008969:Molecular Sequence Data; D000090063:Proto-Oncogene Mas; D050784:Proto-Oncogene Protein c-ets-1; D011518:Proto-Oncogene Proteins / Q000235:genetics*; D050783:Proto-Oncogene Proteins c-ets; D011519:Proto-Oncogenes; D014157:Transcription Factors; D014981:Xenopus
chemical_list: C494041:ETS1 protein, human; C494042:Ets1 protein, mouse; C000715470:MAS1 protein, human; D000090063:Proto-Oncogene Mas; D050784:Proto-Oncogene Protein c-ets-1; D011518:Proto-Oncogene Proteins; D050783:Proto-Oncogene Proteins c-ets; D014157:Transcription Factors