Question

Histone protein does not contain one of the following amino acid
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Answer 1

Answer:

Discovered in avian red blood cell nuclei by Albrecht Kossel about 1884, histones are water-soluble and contain large amounts of basic amino acids, particularly lysine and arginine. They are abundant in the thymus and pancreas.

Explanation:

Answer 2

Answer:

Histones are highly basic proteins found in eukaryotic cell nuclei that pack and order the DNA into structural units called nucleosomes.[1][2] Histones are abundant in lysine and arginine. Histones are the chief protein components of chromatin, acting as spools around which DNA winds, and playing a role in gene regulation. Without histones, the unwound DNA in chromosomes would be very long (a length to width ratio of more than 10 million to 1 in human DNA). For example, each human diploid cell (containing 23 pairs of chromosomes) has about 1.8 meters of DNA; wound on the histones, the diploid cell has about 90 micrometers (0.09 mm) of chromatin. When the diploid cells are duplicated and condensed during mitosis, the result is about 120 micrometers of chromosomes.[3]

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