Table of Contents
Where can chromatin be found?
Chromatin is a complex of macromolecules composed of DNA, RNA, and protein, which is found inside the nucleus of eukaryotic cells.
Where does chromosome packaging occur?
Chromosomal DNA is packaged inside microscopic nuclei with the help of histones. These are positively-charged proteins that strongly adhere to negatively-charged DNA and form complexes called nucleosomes. Each nuclesome is composed of DNA wound 1.65 times around eight histone proteins.
Is DNA inside a chromosome?
In the nucleus of each cell, the DNA molecule is packaged into thread-like structures called chromosomes. Each chromosome is made up of DNA tightly coiled many times around proteins called histones that support its structure.
What are the processes that chromatin participates in?
Chromatin organization and its dynamics participate in essentially all DNA-templated processes, including transcription, replication, recombination, and repair.
How does the nucleosome produce the chromatin fiber?
The nucleosome can be further folded to produce the chromatin fiber. Chromatin fibers are coiled and condensed to form chromosomes. Chromatin makes it possible for a number of cell processes to occur including DNA replication, transcription, DNA repair, genetic recombination, and cell division.
Where are DNA, RNA and protein found in chromatin?
The Structure and Function of Chromatin. Chromatin is a complex of macromolecules composed of DNA, RNA, and protein, which is found inside the nucleus of eukaryotic cells. Chromatin exists in two forms: heterochromatin (condensed) and euchromatin (extended). The primary protein components of chromatin are histones that help to organize DNA…
How is chromatin condensation illustrated in two chromosomes?
These levels of chromatin compaction are illustrated here in two chromosomes (orange and blue). With DNA encoding the genetic information of the cell, the condensation of this molecule is obviously more complicated than can be represented by simple 11 nm or 30 nm fiber models.