| molecular function |
|---|
| | GO:0042802 | | identical protein binding | | Interacting selectively and non-covalently with an identical protein or proteins. |
| | GO:1990644 | | microtubule site clamp | | The binding activity of a molecule that attaches the spindle microtubules to the kinetochore. |
| | GO:0003674 | | molecular_function | | Elemental activities, such as catalysis or binding, describing the actions of a gene product at the molecular level. A given gene product may exhibit one or more molecular functions. |
| | GO:0005515 | | protein binding | | Interacting selectively and non-covalently with any protein or protein complex (a complex of two or more proteins that may include other nonprotein molecules). |
| biological process |
|---|
| | GO:0051315 | | attachment of mitotic spindle microtubules to kinetochore | | The cell cycle process in which spindle microtubules become physically associated with the proteins making up the kinetochore complex as part of mitotic metaphase plate congression. |
| | GO:0045143 | | homologous chromosome segregation | | The cell cycle process in which replicated homologous chromosomes are organized and then physically separated and apportioned to two sets during the first division of the meiotic cell cycle. Each replicated chromosome, composed of two sister chromatids, aligns at the cell equator, paired with its homologous partner; this pairing off, referred to as synapsis, permits genetic recombination. One homolog (both sister chromatids) of each morphologic type goes into each of the resulting chromosome sets. |
| | GO:0051321 | | meiotic cell cycle | | Progression through the phases of the meiotic cell cycle, in which canonically a cell replicates to produce four offspring with half the chromosomal content of the progenitor cell via two nuclear divisions. |
| | GO:0045132 | | meiotic chromosome segregation | | The process in which genetic material, in the form of chromosomes, is organized into specific structures and then physically separated and apportioned to two or more sets during M phase of the meiotic cell cycle. |
| | GO:0045144 | | meiotic sister chromatid segregation | | The cell cycle process in which sister chromatids are organized and then physically separated and randomly apportioned to two sets during the second division of the meiotic cell cycle. |
| | GO:0034503 | | protein localization to nucleolar rDNA repeats | | Any process in which a protein is transported to, or maintained at, the rDNA repeats on a chromosome in the nucleolus. |
| | GO:0070550 | | rDNA condensation | | The process in which the chromatin structure of the rDNA repeats is compacted. In S. cerevisiae, condensation and resolution of the rDNA occurs during anaphase. |
| cellular component |
|---|
| | GO:0005694 | | chromosome | | A structure composed of a very long molecule of DNA and associated proteins (e.g. histones) that carries hereditary information. |
| | GO:0034506 | | chromosome, centromeric core domain | | The innermost portion of the centromeric region of a chromosome, encompassing the core region of a chromosome centromere and the proteins that bind to it. |
| | GO:0000775 | | chromosome, centromeric region | | The region of a chromosome that includes the centromeric DNA and associated proteins. In monocentric chromosomes, this region corresponds to a single area of the chromosome, whereas in holocentric chromosomes, it is evenly distributed along the chromosome. |
| | GO:0000778 | | condensed nuclear chromosome kinetochore | | A multisubunit complex that is located at the centromeric region of a condensed nuclear chromosome and provides an attachment point for the spindle microtubules. |
| | GO:0072686 | | mitotic spindle | | A spindle that forms as part of mitosis. Mitotic and meiotic spindles contain distinctive complements of proteins associated with microtubules. |
| | GO:0033551 | | monopolin complex | | A protein complex required for clamping microtubule binding sites, ensuring orientation of sister kinetochores to the same pole (mono-orientation) during meiosis I. In the yeast S. cerevisiae this complex consists of Csm1p, Lrs4p, Hrr25p and Mam1p; in S. pombe Psc1 and Mde4 have been identified as subunits. |
| | GO:0005635 | | nuclear envelope | | The double lipid bilayer enclosing the nucleus and separating its contents from the rest of the cytoplasm; includes the intermembrane space, a gap of width 20-40 nm (also called the perinuclear space). |
| | GO:0005730 | | nucleolus | | A small, dense body one or more of which are present in the nucleus of eukaryotic cells. It is rich in RNA and protein, is not bounded by a limiting membrane, and is not seen during mitosis. Its prime function is the transcription of the nucleolar DNA into 45S ribosomal-precursor RNA, the processing of this RNA into 5.8S, 18S, and 28S components of ribosomal RNA, and the association of these components with 5S RNA and proteins synthesized outside the nucleolus. This association results in the formation of ribonucleoprotein precursors; these pass into the cytoplasm and mature into the 40S and 60S subunits of the ribosome. |
| | GO:0005634 | | nucleus | | A membrane-bounded organelle of eukaryotic cells in which chromosomes are housed and replicated. In most cells, the nucleus contains all of the cell's chromosomes except the organellar chromosomes, and is the site of RNA synthesis and processing. In some species, or in specialized cell types, RNA metabolism or DNA replication may be absent. |
Description
