What does ribosomal mean?
Ribosomal is the adjective used to describe anything connected with ribosomes, the minute structures in cells where proteins are assembled. Ribosomes read messenger RNA and join the amino acids specified by that RNA into polypeptide chains. The most familiar technical term is ribosomal RNA, usually abbreviated rRNA, which forms much of a ribosome’s structural and catalytic core. Other established uses include ribosomal proteins, ribosomal subunits, and ribosomal genes. The word is primarily used in molecular biology, genetics, biochemistry, and medical research. Although ribosomes occur in every known form of cellular life, particular combinations of ribosomal components can help scientists identify organisms and examine how cells make proteins. The term is more precise than simply saying “cell-related”: when a scientist describes something as ribosomal, the connection is specifically to the machinery responsible for protein synthesis.
adjectiveRelating to or occurring on a ribosome, the cellular structure where proteins are assembled from amino acids.
- Relating to ribosomes or to the structures, molecules, or processes involving ribosomes.
"Ribosomal proteins help position messenger RNA correctly during protein synthesis."
"The mutation reduced the production of ribosomal proteins and impaired cell growth."
"Ribosomal RNA forms the structural and catalytic core of a ribosome."
Without ribosomes, cells could translate genetic instructions into proteins but could not assemble the proteins those instructions describe.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does ribosomal come from?
Ribosomal was formed from ribosome with the adjective suffix -al, meaning “relating to.” The noun ribosome was coined in the mid-20th century from the prefix ribo-, associated with ribose and originally indicating the RNA involved, together with the suffix -some, a combining form associated with a body or structure. Related technical formations include ribose, ribonucleic, and riboflavin.
Related word forms
How ribosomal is actually used
The adjective is standard in molecular biology, genetics, biochemistry, and medicine. It is normally used attributively in technical expressions such as “ribosomal RNA” and “ribosomal protein.”
Easily confused with ribosomal
A ribosome is the cellular structure itself, whereas ribosomal is an adjective describing something associated with or located on ribosomes.