What are histones and what do they do?

Answer 1

In mature cells, most DNA mustn't be transcribed - for exapmle, producing a digesting enzyme in neuron cells would be fatal. Thus, the DNA should be strapped together as firmly as possible, so that no polymerase or other machinery for DNA-transcription gets access to that part of DNA. But DNA itself is negatively charged (because of its phosphat backbone) and will repel from any other part of DNA that gets near it.

The solution to that are the histones. They consist of many positively charged amnioacids. So the DNA will not only be eager to bind to these proteins, but further, you can roll a piece of DNA next to another part of DNA, preventig them from pushing away from one another.

Answer 2

Histones are highly alkaline proteins that are found in eukaryotic cell nuclei that package and order the DNA into structural units called nucleosomes. These specific proteins are involved in cell division and cancer.

Answer 3

Histones are proteins that help package and organize DNA in the cell nucleus. They play a crucial role in gene regulation by forming complexes with DNA to create chromatin structure, which can either allow or restrict access of transcription factors and other proteins to specific regions of DNA.

Answer 4

DNA packaging, chromosome stabilization and gene expression.

Answer 5

NO ONE KNOWS. but my Biology teacher knows. Ask Mrs. Brittany Merkerl :)