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The nucleosome is composed of how many histone proteins?(a) 7(b) 9(c) 8(d) 10I got this question during a job interview.I'd like to ask this question from Genes, Chromosomes and Genomes topic in chapter Bioenergetics, Enzymes, Metabolism, Genes, Chromosomes and Genomes of Cell Biology

Answer»

The correct option is (b) 9

The best explanation: The nucleosome is COMPOSED of 8 histone PROTEINS known as Histone Octamer and a separate H1 protein. The histone proteins present are two H2A, two H2B, two H3 and two H4 proteins ALONG with a single H1 protein. The DNA strand WOUNDS around the DNA Octamer to produce a nucleosome unit.



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