Targeting of γ-tubulin complexes to microtubule organizing centers: conservation and divergence. 2015

Tien-chen Lin, and Annett Neuner, and Elmar Schiebel
Zentrum für Molekulare Biologie der Universität Heidelberg (ZMBH), DKFZ-ZMBH Allianz, Im Neuenheimer Feld 282, 69120 Heidelberg, Germany. Electronic address: t.lin@zmbh.uni-heidelberg.de.

Organisms with closed or open mitosis have differentially evolved various gamma-tubulin complex (γ-TuC) recruiting factors to organize diverse cellular microtubule (MT) arrays, including the mitotic spindle. γ-TuC recruiting factors not only target the γ-TuC to MT nucleation sites, but also regulate MT nucleation activity by generating the template for MT nucleation or promoting the MT nucleation activity of pre-existing γ-tubulin ring complexes (γ-TuRCs). Here we outline the current understanding of MT nucleator assembly and its regulation by γ-tubulin small complex (γ-TuSC) receptors. Moreover, we discuss the emergence of γ-TuC recruiting factors through evolution with augmented complexity and diversity and propose a hypothesis to account for the evolution of these factors in cooperative spindle assembly.

UI MeSH Term Description Entries
D008870 Microtubules Slender, cylindrical filaments found in the cytoskeleton of plant and animal cells. They are composed of the protein TUBULIN and are influenced by TUBULIN MODULATORS. Microtubule
D008938 Mitosis A type of CELL NUCLEUS division by means of which the two daughter nuclei normally receive identical complements of the number of CHROMOSOMES of the somatic cells of the species. M Phase, Mitotic,Mitotic M Phase,M Phases, Mitotic,Mitoses,Mitotic M Phases,Phase, Mitotic M,Phases, Mitotic M
D008941 Spindle Apparatus A microtubule structure that forms during CELL DIVISION. It consists of two SPINDLE POLES, and sets of MICROTUBULES that may include the astral microtubules, the polar microtubules, and the kinetochore microtubules. Mitotic Apparatus,Mitotic Spindle Apparatus,Spindle Apparatus, Mitotic,Meiotic Spindle,Meiotic Spindle Apparatus,Mitotic Spindle,Apparatus, Meiotic Spindle,Apparatus, Mitotic,Apparatus, Mitotic Spindle,Apparatus, Spindle,Meiotic Spindles,Mitotic Spindles,Spindle Apparatus, Meiotic,Spindle, Meiotic,Spindle, Mitotic,Spindles, Meiotic,Spindles, Mitotic
D002453 Cell Cycle The complex series of phenomena, occurring between the end of one CELL DIVISION and the end of the next, by which cellular material is duplicated and then divided between two daughter cells. The cell cycle includes INTERPHASE, which includes G0 PHASE; G1 PHASE; S PHASE; and G2 PHASE, and CELL DIVISION PHASE. Cell Division Cycle,Cell Cycles,Cell Division Cycles,Cycle, Cell,Cycle, Cell Division,Cycles, Cell,Cycles, Cell Division,Division Cycle, Cell,Division Cycles, Cell
D004331 Drosophila melanogaster A species of fruit fly frequently used in genetics because of the large size of its chromosomes. D. melanogaster,Drosophila melanogasters,melanogaster, Drosophila
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D012441 Saccharomyces cerevisiae A species of the genus SACCHAROMYCES, family Saccharomycetaceae, order Saccharomycetales, known as "baker's" or "brewer's" yeast. The dried form is used as a dietary supplement. Baker's Yeast,Brewer's Yeast,Candida robusta,S. cerevisiae,Saccharomyces capensis,Saccharomyces italicus,Saccharomyces oviformis,Saccharomyces uvarum var. melibiosus,Yeast, Baker's,Yeast, Brewer's,Baker Yeast,S cerevisiae,Baker's Yeasts,Yeast, Baker
D012568 Schizosaccharomyces A genus of ascomycetous fungi of the family Schizosaccharomycetaceae, order Schizosaccharomycetales. Fission Yeast,Schizosaccharomyces malidevorans,Schizosaccharomyces pombe,Yeast, Fission,S pombe,Fission Yeasts
D014404 Tubulin A microtubule subunit protein found in large quantities in mammalian brain. It has also been isolated from SPERM FLAGELLUM; CILIA; and other sources. Structurally, the protein is a dimer with a molecular weight of approximately 120,000 and a sedimentation coefficient of 5.8S. It binds to COLCHICINE; VINCRISTINE; and VINBLASTINE. alpha-Tubulin,beta-Tubulin,delta-Tubulin,epsilon-Tubulin,gamma-Tubulin,alpha Tubulin,beta Tubulin,delta Tubulin,epsilon Tubulin,gamma Tubulin

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