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Ch. 19 - Epigenetics
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All textbooksKlug 12th EditionCh. 19 - EpigeneticsProblem 23

Chapter 18, Problem 23

Amino acids are classified as positively charged, negatively charged, or electrically neutral.

Which category includes lysine?

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Hello everyone and welcome to today's video. So license is an example of a negatively possibly or neutral amino acid or none of the above. Well, in order to solve this problem, we need to take a close look at the side chain of license or remember that the side chain of license is going to have a minnow group. These amino group is going to make the side chain of lighting extremely basic, meaning that a physiological PHS license is going to have a positive charge. This side chain is going to be positively charged because these amino group as a base. Because of this, the correct answer choice is going to be the license when found inside of the human body is going to be a positively charged amino acid because physiological ph allows this. I really hope this video helped you And I hope to see you on the next one.
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Related Practice
Textbook Question

From the data in Table 19.3, draw up a list of histone H3 modifications associated with gene activation. Then draw up a list of H3 modifications associated with repression.

Are there any overlaps on the lists?

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Textbook Question

From the data in Table 19.3, draw up a list of histone H3 modifications associated with gene activation. Then draw up a list of H3 modifications associated with repression.

Are these overlaps explained by different modifications?

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Textbook Question

From the data in Table 19.3, draw up a list of histone H3 modifications associated with gene activation. Then draw up a list of H3 modifications associated with repression.

If not, how can you reconcile these differences?

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Textbook Question

Amino acids are classified as positively charged, negatively charged, or electrically neutral.

How does this property of lysine allow it to interact with DNA?

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Textbook Question

Amino acids are classified as positively charged, negatively charged, or electrically neutral.

How does acetylation of lysine affect its interaction with DNA, and how is this related to the activation of gene expression?

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A particular type of anemia in humans, called β-thalassemia, results from a severe reduction or absence of the normal β-globin chain of hemoglobin. However, the γ-globin chain, normally only expressed during fetal development, can functionally substitute for β-globin. A variety of studies have explored the use of the nucleoside 5-azacytidine for the expression of γ-globin in adult patients with β-thalassemia.

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