Class: Nucleolus

•owl:Thing
        •bfo:Entity
                •snap:Continuant
                        •snap:IndependentContinuant
                                •snap:Object
                                        •Cellular_Component
                                                •Organelle
                                                        •Non_Membrane_Bound_Organelle
                                                                •Nucleolus
                                        •Cellular_Subcomponent
                                                •Nuclear_Subcomponent
                                                        •Nucleolus

Super Classes

has_Regional_Part ONLY Regional_Part_Of_Nucleolus
Non_Membrane_Bound_Organelle
Nuclear_Subcomponent

Annotations

birn_annot:curationStatusuncurated
definitionA 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 (Gene Ontology).
gene_Ontology_ID0005730
sao_IDsao1820400233
umls_IDC0007609

Usage

Class Description/Definition (Necessary Conditions)

Nucleolus-associated_Heterochromatin, Ventricular_Epithelial_Cell
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