Histones: Difference between revisions
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In order for [[DNA|DNA ]]to be packaged tightly enough to fit into a [[Chromosome|chromosome]], it wraps around [[Proteins|proteins ]] | In order for [[DNA|DNA]] to be packaged tightly enough to fit into a [[Chromosome|chromosome]], it wraps around [[Proteins|proteins called]] Histones, located in the [[Nucleus|nucleus]] of a [[Cell|cell]]<ref>http://en.citizendium.org/wiki/Histone</ref>. | ||
Histones can be organized into six classes: | Histones can be organized into six classes: | ||
#H1 | |||
#H2A | |||
#H2B | |||
#H3 | |||
#H4 | |||
#Archael | |||
Without histones, [[DNA|DNA]] would be too long to fit within the nucleus. | |||
Some other functions of histones include [[Acetlyation|acetlyation]], [[Methylation|methylation]], [[Ubiquitination|ubiquitination]], and [[Phosphorylation|phosphorylation]] <ref>http://www.iscid.org/encyclopedia/Histones</ref>. | |||
Some other functions of histones include acetlyation, methylation, ubiquitination, and phosphorylation<ref>http://www.iscid.org/encyclopedia/Histones</ref>. | |||
=== References === | === References === | ||
<references /> | <references /><br> | ||
< | |||
Revision as of 15:55, 22 November 2010
In order for DNA to be packaged tightly enough to fit into a chromosome, it wraps around proteins called Histones, located in the nucleus of a cell[1].
Histones can be organized into six classes:
- H1
- H2A
- H2B
- H3
- H4
- Archael
Without histones, DNA would be too long to fit within the nucleus.
Some other functions of histones include acetlyation, methylation, ubiquitination, and phosphorylation [2].