title: In silico identification and analysis of new Artemis/Artemis-like sequences from fungal and metazoan species.
abstract: The Artemis Group comprises mammalian proteins with important functions in the repair of ionizing radiation-induced DNA double-strand breaks and in the cleavage of DNA hairpin extremities generated during V(D)J recombination. Little is known about the presence of Artemis/Artemis-like proteins in non-mammalian species. We have characterized new Artemis/Artemis-like sequences from the genomes of some fungi and from non-mammalian metazoan species. An in-depth phylogenetic analysis of these new Artemis/Artemis-like sequences showed that they form a distinct clade within the Pso2p/Snm1p A and B Groups. Hydrophobic cluster analysis and three-dimensional modeling allowed to map and to compare conserved regions in these Artemis/Artemis-like proteins. The results indicate that Artemis probably belongs to an ancient DNA recombination mechanism that diversified with the evolution of multi-cellular eukaryotic lineage.
authors.affiliation: Departamento de Biofísica/Centro de Biotecnologia, Universidade Federal do Rio Grande do Sul, Av. Bento Gonçalves 9500, 91507-970, Porto Alegre, RS, Brazil.
authors.forename: Diego
authors.initials: D
authors.lastname: Bonatto
authors.forename: Martin
authors.initials: M
authors.lastname: Brendel
authors.forename: João Antonio Pêgas
authors.initials: JA
authors.lastname: Henriques
mesh_terms: D000595:Amino Acid Sequence; D000818:Animals; D016000:Cluster Analysis; D019295:Computational Biology; D004249:DNA Damage; D004268:DNA-Binding Proteins; D004706:Endodeoxyribonucleases; D004720:Endonucleases; D005656:Fungal Proteins; D006801:Humans; D008958:Models, Molecular; D009687:Nuclear Proteins / Q000737:chemistry / Q000235:genetics*; D010802:Phylogeny; D011995:Recombination, Genetic; D029701:Saccharomyces cerevisiae Proteins
chemical_list: D004268:DNA-Binding Proteins; D005656:Fungal Proteins; D009687:Nuclear Proteins; D029701:Saccharomyces cerevisiae Proteins; C426344:DCLRE1C protein, human; D004706:Endodeoxyribonucleases; D004720:Endonucleases; C090162:PSO2 protein, S cerevisiae; C473337:Dclre1c protein, mouse