Back حمض نووي ريبوزي ريبوسومي Arabic Рибозомна РНК Bulgarian Trenkenn ribonukleek ribosom Breton Ribosomska RNK BS ARN ribosòmic Catalan ئار ئێن ئەی ڕایبۆسۆمی CKB RRNA Czech RRNA Danish Ribosomale RNA German Ριβοσωμικό RNA Greek
| rRNAs | |
|---|---|
 rRNAs of various species | |
| Identifiers | |
| Other data | |
| RNA type | Gene; rRNA |
| PDB structures | PDBe |
Ribosomal ribonucleic acid (rRNA) is a type of non-coding RNA which is the primary component of ribosomes, essential to all cells. rRNA is a ribozyme which carries out protein synthesis in ribosomes. Ribosomal RNA is transcribed from ribosomal DNA (rDNA) and then bound to ribosomal proteins to form small and large ribosome subunits. rRNA is the physical and mechanical factor of the ribosome that forces transfer RNA (tRNA) and messenger RNA (mRNA) to process and translate the latter into proteins.[1] Ribosomal RNA is the predominant form of RNA found in most cells; it makes up about 80% of cellular RNA despite never being translated into proteins itself. Ribosomes are composed of approximately 60% rRNA and 40% ribosomal proteins, though this ratio differs between prokaryotes and eukaryotes.[2][3]
- ^ Berk, Arnold; Baltimore, David; Lodish, Harvey; Darnell, James; Matsudaira, Paul; Zipursky, S. Lawrence (1996-01-31). Molekulare Zellbiologie. Berlin, Boston: DE GRUYTER. doi:10.1515/9783110810578. ISBN 9783110810578.
- ^ Davidson, Michael W. (13 November 2015). "Molecular Expressions Cell Biology: Ribosomes". Molecular Expressions. National High Magnetic Field Laboratory. Retrieved 2024-03-29.
- ^ "Ribosome | Definition, Function, Formation, Role, Importance, & Facts | Britannica". Encyclopedia Britannica. 2024-03-08. Retrieved 2024-03-29.