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Disulfide bonds play an important role in protein structure.Describe which amino acids are involved in forming these bonds, andhow disulfide bonds contribute to specific levels of proteinstructure.

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Hubert Koch
Hubert KochLv2
28 Sep 2019
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Related questions

How do amino acid sequences influence the properties of a protein? (2 points)

Covalent bonding occurs between parallel amino acid chains, forming ß-pleated sheets.

Disulfide bonds between neighboring amino acid side chains can cause an α helix to form.

Hydrogen bonding between every fourth amino acid results in formation of an α helix.

Strands of amino acids form peptide bonds with each other, resulting in ß-pleated sheets.

A protein has the following sequence: ALKJSCLKEPINWDVKLNCSLKRPILQMNLKCVGILKVN

The sequence contains three amino acids that can form a disulfide bond. However, only two of them actually make a disulfide bond in the protein. Propose a series of experiments that would allow you to determine between which two amino acids the disulfide bond occurs. Pick from: Salting out, ion exchange chromatography, hydrophobic interaction chromatography, gel filtration chromatography, SDS PAGE, affinity chromatography. HINT: do not overcomplicate the question.

Amino Acids.

Question 1, Part A.
Which amino acid will be the most soluble in water? Explain why.
A. Leucine
B. Proline
C. Lysine
D. Glutamate

Question 1, Part B.
During hydrolysis of an amino acid chain, what bonds are broken?
A. Disulfide bonds
B. Phosphodiester bonds
C. Ionic bonds
D. Peptide bonds

Question 1, Part C.
What factors allow a pool of 20 amino acids to produce thousands of unique proteins? Select all that apply.
A. Variation in length of amino acid backbone
B. Each protein is encoded by a distinct gene
C. Variations in the type of peptide bond
D. Variations in the glycosidic linkage
E. Variation in tertiary structure
F. Variations in which amino acids are used

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