title: Evolution of centrosomes and the nuclear lamina: Amoebozoan assets.
abstract: The current eukaryotic tree of life groups most eukaryotes into one of five supergroups, the Opisthokonta, Amoebozoa, Archaeplastida, Excavata and SAR (Stramenopile, Alveolata, Rhizaria). Molecular and comparative morphological analyses revealed that the last eukaryotic common ancestor (LECA) already contained a rather sophisticated equipment of organelles including a mitochondrion, an endomembrane system, a nucleus with a lamina, a microtubule-organizing center (MTOC), and a flagellar apparatus. Recent studies of MTOCs, basal bodies/centrioles, and nuclear envelope organization of organisms in different supergroups have clarified our picture of how the nucleus and MTOCs co-evolved from LECA to extant eukaryotes. In this review we summarize these findings with special emphasis on valuable contributions of research on a lamin-like protein, nuclear envelope proteins, and the MTOC in the amoebozoan model organism Dictyostelium discoideum.
authors.affiliation: Universität Potsdam, Institut für Biochemie und Biologie, Karl-Liebknecht-Strasse 24-25, Ha…, 14476 Potsdam-Golm, Germany. Electronic address: rgraef@uni-potsdam.de.
authors.forename: Ralph
authors.initials: R
authors.lastname: Gräf
authors.affiliation: Universität Potsdam, Institut für Biochemie und Biologie, Karl-Liebknecht-Strasse 24-25, Ha…, 14476 Potsdam-Golm, Germany.
authors.forename: Petros
authors.initials: P
authors.lastname: Batsios
authors.affiliation: Universität Potsdam, Institut für Biochemie und Biologie, Karl-Liebknecht-Strasse 24-25, Ha…, 14476 Potsdam-Golm, Germany.
authors.forename: Irene
authors.initials: I
authors.lastname: Meyer
mesh_terms: D000656:Amoeba / Q000378:metabolism*; D000818:Animals; D005075:Biological Evolution; D018385:Centrosome / Q000378:metabolism*; D002843:Chromatin / Q000378:metabolism; D004023:Dictyostelium / Q000378:metabolism*; D006801:Humans; D034881:Nuclear Lamina / Q000378:metabolism*; D010802:Phylogeny
chemical_list: D002843:Chromatin
keywords: Basal body; Centriole; Centrosome; LEM-domain; LINC complex; Lamin; Nuclear envelope; Nuclear lamina; Sun1