Ribosomal RNA

**Semantic type:** Nucleic Acid, Nucleoside, or Nucleotide

**Definition:** An RNA molecule that does not contain protein-coding sequence information and constitutes the majority of the cellular RNA (~80%). This nucleic acid associates with multiple proteins to form ribosomes, which are the organelles that drive mRNA-directed protein synthesis.

**Synonyms:** - RIBOSOMAL RNA - rRNA - rRNA - rRNA