C0007609 - The region within a cell nucleus where ribosomal DNA is clustered, ribosomal RNA is synthesized and ribosomes are assembled. 1/10
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Terms, descriptions
CUI    C0007609
RussianMedical Subject Headings Russian D002466 L3352383preferred S3879877 Y КЛЕТКИ ЯДРЫШКО
RussianMedical Subject Headings Russian D002466 L0897004no S1100821 Y KLETKI IADRYSHKO
RussianMedical Subject Headings Russian D002466 L1536418no S1832327 Y PLAZMOSOMA
RussianMedical Subject Headings Russian D002466 L3363662no S3891145 Y ПЛАЗМОСОМА
Medical Subject Headings A0036367 AT38143426 Within most types of eukaryotic CELL NUCLEUS, a distinct region, not delimited by a membrane, in which some species of rRNA (RNA, RIBOSOMAL) are synthesized and assembled into ribonucleoprotein subunits of ribosomes. In the nucleolus rRNA is transcribed from a nucleolar organizer, i.e., a group of tandemly repeated chromosomal genes which encode rRNA and which are transcribed by RNA polymerase I. (Singleton & Sainsbury, Dictionary of Microbiology & Molecular Biology, 2d ed)
(CPTSP) CRISP Thesaurus A0319571 AT51222646 rounded refractile body present in the nucleus of most eukaryotic cells which is the site of synthesis of ribosomal RNA.
Gene Ontology A11619668 AT148904669 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. [ISBN:0198506732]
NCI Thesaurus A7576955 AT210378754 The region within a cell nucleus where ribosomal DNA is clustered, ribosomal RNA is synthesized and ribosomes are assembled.