| GOID Link to GO |
Functional Category | Description | Protein Count link to protein list |
|---|---|---|---|
| GO:0005813 | centrosome | A structure comprised of a core structure (in most organisms, a pair of centrioles) and peripheral material from which a microtubule-based structure, such as a spindle apparatus, is organized. Centrosomes occur close to the nucleus during interphase in many eukaryotic cells, though in animal cells it changes continually during the cell-division cycle. | 335 |
| GO:0005816 | spindle pole body | The microtubule organizing center in fungi; functionally homologous to the animal cell centrosome. | 78 |
| GO:0005814 | centriole | A cellular organelle, found close to the nucleus in many eukaryotic cells, consisting of a small cylinder with microtubular walls, 300-500 nm long and 150-250 nm in diameter. It contains nine short, parallel, peripheral microtubular fibrils, each fibril consisting of one complete microtubule fused to two incomplete microtubules. Cells usually have two centrioles, lying at right angles to each other. At division, each pair of centrioles generates another pair and the twin pairs form the pole of the mitotic spindle. | 62 |
| GO:0005932 | microtubule basal body | A short cylindrical array of microtubules and associated proteins found at the base of a eukaryotic cilium or flagellum that is similar in structure to a centriole. The basal body serves as a nucleation site for axoneme growth. | 57 |
| GO:0044732 | mitotic spindle pole body | The microtubule organizing center on a spindle that forms as part of mitosis; functionally homologous to the animal cell centrosome. | 46 |
| GO:0034451 | centriolar satellite | A small (70-100 nm) cytoplasmic granule that contains a number of centrosomal proteins; centriolar satellites traffic toward microtubule minus ends and are enriched near the centrosome. | 15 |
| GO:0000242 | pericentriolar material | A network of small fibers that surrounds the centrioles in cells; contains the microtubule nucleating activity of the centrosome. | 12 |
| GO:0005823 | central plaque of spindle pole body | One of three laminate structures that form the spindle pole body; the central plaque is embedded in the nuclear envelope. | 10 |
| GO:0000930 | gamma-tubulin complex | A multiprotein complex composed of gamma-tubulin and other non-tubulin proteins. Gamma-tubulin complexes are localized to microtubule organizing centers, and play an important role in the nucleation of microtubules. The number and complexity of non-tubulin proteins associated with these complexes varies between species. | 7 |
| GO:0031616 | spindle pole centrosome | A centrosome from which one pole of a mitotic or meiotic spindle is organized. | 6 |
| GO:0005825 | half bridge of spindle pole body | Structure adjacent to the plaques of the spindle pole body. | 5 |
| GO:0000923 | equatorial microtubule organizing center | A microtubule organizing center formed by a band of gamma-tubulin that is recruited to a circumferential band of F-actin at the midpoint of a cell and which nucleates microtubules from the cell division site at the end of mitosis. | 4 |
| GO:0036064 | cilium basal body | A membrane-tethered derivative of the centriole, and the site of assembly and remodelling of the cilium. As well as anchoring the cilium, the basal body is thought to provide a selective gateway regulating the entry of ciliary proteins and vesicles by intraflagellar transport. | 3 |
| GO:0008274 | gamma-tubulin ring complex | A multiprotein complex composed of gamma-tubulin and other non-tubulin proteins that forms a flexible open ring structure thought to be the unit of nucleation at the minus end of a microtubule. | 3 |
| GO:0071958 | new mitotic spindle pole body | The spindle pole body that is formed by spindle pole body duplication, and to which proteins involved in mitotic exit signaling (for example, the septation initiation network in fission yeast) localize. | 2 |
| GO:0008275 | gamma-tubulin small complex | A complex usually comprising two gamma-tubulin molecules and two conserved non-tubulin proteins. Some gamma-tubulin small complexes are thought to be the repeating unit making up the core of the gamma-tubulin ring complex. | 2 |
| GO:0008352 | katanin complex | A complex possessing an activity that couples ATP hydrolysis to the severing of microtubules; usually a heterodimer comprising a catalytic subunit (often 60kDa) and a regulatory subunit (often 80 kDa). | 1 |
| GO:0031021 | interphase microtubule organizing center | A microtubule organizing center found in interphase cells, which organize a longitudinal array of three to five MT bundles from the nuclear envelope during interphase. Each MT bundle is composed of two to seven MTs arranged in an antiparallel configuration, with the dynamic MT plus ends extending toward the cell tips and stable minus ends near the nucleus. | 1 |
| GO:0031592 | centrosomal corona | An amorphous structure surrounding the core of the centrosome, from which microtubules are nucleated; contains gamma-tubulin. | 1 |