If serine and tyrosine both have hydroxyl groups, should they be in the same solubility category?...
If serine and tyrosine both have hydroxyl groups, should they be in the same solubility category?
A) No. The aromatic portion of tyrosine would cause a clathrate to form in water and lower the solubility despite the dipole interactions that can occur between water and the hydroxyl group.Therefore, tyrosine is best categorized with the other aromatic amino acids.
B) Yes. The hydroxyl group creates dipole-dipole interactions withwater. The presence of oxygen in both R group defines them as polar and the partial electrostatic force between the hydroxyl group and waterdefines them bothas uncharged polar.
C) No. The aromatic portion of tyrosine would have dipole-induced dipole interactions as well as dipole-dipole interactions between the hydroxyl group and water. The R group of serine contains only a hydroxyl group and having only one type of interaction with water dictates that these amino acids belong to separate solubilitycategories.
D) Yes. Serine is similar to alanine, but has a hydroxyl group in place of one hydrogen. Tyrosine is similar to phenylalanine, but has a hydroxyl group in place of one hydrogen. The similar chemical modifications for both amino acids dictates that they should be in the same solubility category
Homework Answers
The answer is option (c).
i.e. No. The aromatic portion of tyrosine would have dipole-induced dipole interactions as well as dipole-dipole interactions between the hydroxyl group and water. The R group of serine contains only a hydroxyl group and having only one type of interaction with water dictates that these amino acids belong to separate solubility categories.
As it is clear from the explanation above that the tyrosine will have 2 types of dipole moments but serine will have only 1 type of dipole moment.So,there is difference in the types and number of interactions,so it is quite clear that they will have different solubility categories.
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If serine and tyrosine both have hydroxyl groups, should they be
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The one-letter sequence is: WATER
a) Draw the peptide (R-groups trans), indicating charges, in
predominant form found at pH = 0.
b) What is the isoelectric point?
c) What is the average charge on the population of peptide
macromolecules at pH = 2.2?
d) What is the average charge on the population of peptide
macromolecules at pH = 12.5?
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amino acid. Which functional group gives serine its
distinct property?
a. H3
b. CH2OH
c. –H
d. COO–
____ 2. The monomers shown below are monomers for which of the
following natural polymers?
a. polysaccharides
b. plastics
c. DNA
d. proteins
____ 3. Which of the following processes illustrates the production
of a protein?
a. specific code for amino acids --> amino acid chain -->
gene --> DNA --> specific...
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