POLYNUCLEOSOMES Meaning and
Definition
-
Polynucleosomes are compact structures formed by the wrapping of DNA around a group of histone proteins in eukaryotic cells. This term combines the words "poly" (meaning many) and "nucleosomes" (which are the basic units of DNA packaging in the cell nucleus).
Nucleosomes are composed of a histone octamer, consisting of two copies each of histones H2A, H2B, H3, and H4, around which DNA is wrapped like a spool. The DNA winding around the histones helps to condense and organize the long strands of DNA within the cell nucleus, allowing for efficient packing of genetic information.
Polynucleosomes refer to the higher order chromatin structure formed when multiple nucleosomes are closely packed together, resulting in further condensation of DNA. These structures play a crucial role in gene regulation by modulating access to DNA and influencing its transcriptional activity.
Polynucleosomes are dynamic and undergo changes in response to various cellular processes such as DNA replication, repair, and transcription. They can be influenced by modifications, such as chemical tags, on the histones or DNA, which can activate or suppress gene expression.
Studying polynucleosome organization and dynamics provides insights into how DNA is packaged and regulated within the nucleus, which is essential for understanding many cellular processes, including development, differentiation, and disease.
Common Misspellings for POLYNUCLEOSOMES
- oolynucleosomes
- lolynucleosomes
- -olynucleosomes
- 0olynucleosomes
- pilynucleosomes
- pklynucleosomes
- pllynucleosomes
- pplynucleosomes
- p0lynucleosomes
- p9lynucleosomes
- pokynucleosomes
- popynucleosomes
- pooynucleosomes
- poltnucleosomes
- polgnucleosomes
- polhnucleosomes
- polunucleosomes
- pol7nucleosomes
- pol6nucleosomes
- polybucleosomes
Etymology of POLYNUCLEOSOMES
The word "Polynucleosomes" is a combination of two components: "poly-" and "nucleosomes".
1. "Poly-" is a prefix derived from the Greek word "polus", meaning "many" or "multiple". In English, it is used to indicate many, much, or multiple instances of something. For example, "polysyllabic" means having many syllables, while "polygamy" refers to the practice of having multiple spouses.
2. "Nucleosomes" is a term used in genetics and molecular biology to refer to the fundamental unit of DNA packaging in eukaryotic organisms. Nucleosomes consist of DNA coiled around histone proteins. The word "nucleosome" combines "nucleus", referring to the central part of the cell, and "some", a suffix used to indicate a structural component.
Infographic
Add the infographic to your website:
