Chromatin Structure
From Biosites.org
| |||||||
|
Chromatin is the complex of DNA and protein that makes up chromosomes. It is found inside the nuclei of eukaryotic cells, and within the nucleoid in prokaryotic cells. [1] The major proteins involved in chromatin are histone proteins, although many other chromosomal proteins have prominent roles too. The functions of chromatin are to package DNA into a smaller volume to fit in the cell, to strengthen the DNA to allow mitosis and meiosis, and to serve as a mechanism to control expression. Changes in chromatin structure are affected mainly by methylation (DNA and proteins) and acetylation (proteins). Chromatin structure is also relevant to DNA replication and DNA repair. Chromatin Wikipedia, the free encyclopedia Chromatin Structure and Function Information regarding histones, histone modifications and their biological roles, and related links. Chromatin - The Next Frontier Chromatin is the structure that the eukaryotic genome is packaged into, allowing over a metre of DNA to fit into the small volume of the nucleus. It is composed of DNA and proteins, most of which are histones.  Chromatin Structure Chromatin is the substance which becomes visible chromosomes during cell division. Its basic unit is nucleosome, composed of 146 bp DNA and eight histone proteins. Eukaryotic Chromatin Structure DNA Structure, Replication and Eukaryotic Chromatin Structure WWW Links Chromatin Structure and Function The genetic information of eukaryotic cells is packaged in the form of chromatin. The fundamental unit of this packaging is the nucleosome, comprising two copies of each of four different histone proteins, around which is wrapped the double-stranded DNA.  animated outline of chromosome structure Chromatin structure  Chromatin structure  |
