Ribonucleoprotein (RNP)
A combination of ribonucleic acid (RNA) and protein. In autoimmune diseases, antibodies can form against ribonucleoprotein. They are called anti-RNP antibodies.
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- Ribosomal RNA
A molecular component of a ribosome, the cell’s essential protein factory. Ribosomal RNA (rRNA) fabricates polypeptides (assemblies of amino acids that make up proteins). A tiny particulate structure located in the cytoplasm of the cell (outside the nucleus), the ribosome is composed of two subunits, one larger than the other. Both subunits were believed to […]
- Ribosome
A tiny structure in the cytoplasm of a cell (outside the nucleus) that functions as the protein factory for the cell.
- Ribozyme
An RNA molecule that can catalyze its own chemical reactions.
- Rice genome
The first commercially important plant to have its genome sequenced. This feat, completed early in 2001, is particularly important because rice is a staple food for a large portion of the population of the world. With the rice sequence, genes can be located to improve yields and make rice more nutritious. Rice was the second […]
- Ricin
A potent protein toxin made from the waste left over from processing castor beans. The castor plant, which is called Ricinus communis, is found throughout the world. Ricin is fairly easy to extract. Worldwide a million tons of castor beans are processed annually in the production of castor oil. The waste mash from this process […]