You are seeing Ask web results for HISTONES.
 [hĭśtōń]
Dictionary.com · The American Heritage® Dictionary
|
|
Histone - Wikipedia, the free encyclopedia
|
||
|
Histones are the proteins closely associated with DNA molecules. They are responsible for the structure of chromatin and play important roles in the regulation of gene expression. Five types of histones have been identified: H1 (or H5), H2A, H2B, H3 and H4. H1 and its homologous protein H5 are involved in higher...
|
||
|
protein in cell nuclei: a simple protein bound to DNA, involved in the coiling of chromosomes. There are five types, together constituting about half the mass of chromosomes. ... Search for "histones" in all of MSN Encarta...
|
||
|
Histones are the major structural proteins of chromosomes. The DNA molecule is wrapped twice around a Histone Octamer to make a Nucleosome. Six Nucleosomes are assembled into a Solenoid in association with H1 histones.
|
||
|
Previously, it was thought that only five types of histones existed, namely H1, H2A, H2B, H3 and H4. The discovery of any new class of histones was virtually discarded by many, owing to the highly conserved nature of these proteins.
|
||
|
Definition and other additional information on Histones from Biology-Online.org dictionary. ... Methylation of histones. The allele is wrapped around the histones, and when their tails are methylated, the histones stay closely condense and do not let any transcription factors bind to their elements for transcription.
|
||
|
Red coloring indicates that the transcription level of the gene increases when histones are depleted for a given period of time, whereas green coloring indicates that the transcriptional level has decreased. The genes whose expression increases are grouped together and genes whose expression decreases are grouped together.
|
||
|
Encyclopedia information on Histones ... Histones are proteins around which DNA can wind. They play an important role in gene regulation in eukaryotic cells and in the Euryarchaea bacteria of the family Archaea. Histones are highly water soluble.
|
||
|
In which taxa did H1 linker histones appear in the course of evolution? Detailed comparative analysis of the histone H1 and histone H1-related sequences available to date suggests that the origin of histone H1 can be traced to bacteria.
|
