What does polysome mean?
A polysome is a complex of ribosomes that work together to translate a single mRNA molecule into a polypeptide chain. This process allows for the simultaneous translation of multiple copies of the same protein, increasing the efficiency of protein synthesis. Polysomes are formed when multiple ribosomes bind to the same mRNA, and they can be observed under the electron microscope. The study of polysomes is important in understanding the mechanisms of protein synthesis and the regulation of gene expression. Polysomes have been found in various organisms, including bacteria, archaea, and eukaryotes, and they play a crucial role in the synthesis of proteins that are essential for cellular function. The formation of polysomes is influenced by various factors, including the availability of ribosomes, the concentration of mRNA, and the presence of regulatory proteins. Overall, polysomes are an important aspect of cellular biology, and their study has significant implications for our understanding of protein synthesis and gene regulation.
noun
A polysome is a cluster of ribosomes that are attached to a single mRNA molecule, working together to translate the genetic code into a polypeptide chain. This complex is formed when multiple ribosomes bind to the same mRNA, allowing for the simultaneous translation of multiple copies of the same protein.
- 1. A cluster of ribosomes attached to a single mRNA molecule
"The polysome was observed under the electron microscope, revealing a cluster of ribosomes attached to the mRNA molecule."
"The polysome was observed under the electron microscope, revealing a cluster of ribosomes attached to the mRNA molecule."
"The polysome was found to be essential for the synthesis of a specific protein in the cell."
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of polysome
The word 'polysome' comes from the Greek words 'poly' meaning 'many' and 'som' meaning 'body'. It was first used in the 1960s to describe the complex of ribosomes attached to a single mRNA molecule. The term has since been widely adopted in the field of molecular biology to describe this important aspect of protein synthesis.
Usage notes
Polysome is a formal term used in scientific and academic contexts to describe the complex of ribosomes attached to a single mRNA molecule. It is not commonly used in everyday language, and its usage is generally restricted to technical and scientific writing.