Disambiguation: ribosomal RNA
4 articles available
| Biomedical and Life Sciences > Encyclopedic Reference of Genomics and Proteomics in Molecular Medicine |
Ribosomal RNA
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| Eukaryotic ribosomes are constructed from four types of ribosomal RNA. Three of these species (18S, 5.8S, and 28S) are derived from the processing of a single large precursor RNA, 45S rRNA, which is transcribed by RNA Polymerase I from tandem arrays of rDNA repeats. The remaining rRNA, 5S, is produced... |
| Biomedical and Life Sciences > Encyclopedia of Entomology |
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Ribosomal RNA
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| Ribosomal RNA genes (rRNA genes) are found as tandem repeating units in the nucleolus organizer regions of eukaryotic chromosomes. Each unit is separated from the next by a nontranscribed spacer. Each unit contains three regions coding for the 28S, 18S, and 5.8S rRNAs.... |
| Biomedical and Life Sciences > Encyclopedia of Genetics, Genomics, Proteomics and Informatics |
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| Ribosomes provide the workshop and some of the tools for protein synthesis in all cellular organisms, including the subcellular organs, mitochondria, and chloroplasts. A yeast cell contains about 200,000-2,000,000 ribosomes. The chloroplastic ribosome genes are situated in the characteristic inverted... |
| Biomedical and Life Sciences > Encyclopedia of Genetics, Genomics, Proteomics and Informatics |
Ribosomal RNA
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| About 65% of the bacterial ribosomes are RNA. The 16S bacterial rRNA (1.54 kb) has short double-stranded domains and single stranded loops and about ten of the bases near the 3′-end are methylated. The 16S ribosomal RNA undergoes conformational changes (switches) before translation of the mRNA (Lodmell... |