” wrapping of DNA around the proteins is known as nucleosome assembly. H1, H2A, H2B, H3 and H4 are 5 major types of histone protein involved eukaryotic DNA arrangement in which histones H2A, H2B, H3 and H4 creates nucleosome assembly. The eukaryotic DNA packaging is organized into 3 major structures The folding of DNA is started when the proteins called Histones interact with DNA. On the various stage of arrangement DNA arranged in different structure by interacting with several proteins. The DNA folded 10 4 times to its original length and become a metaphase chromosome. If we consider the DNA of all body cells and make a single long chain we can reach to the sun and believe me it is longer than that distance. DNA is arranged on the chromosome and made up of nitrogenous bases, phosphate and sugar.įor more detail on the structure of DNA read the article: DNA story: The structure and function of DNAĪ haploid genome is made up of 3.7 billion base pairs per cells. The chromosomes are the basic unit of hereditary. In the previous article “ story of chromosome” we had covered the history and structure of the chromosome in brief. Wrapping of DNA molecule around the histone protein is known as nucleosome. The arrangement of DNA on chromosome through nucleosome assembly is known as DNA packaging.
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