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Gelin Gelin
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4 years ago
Indicate whether the following interactions are responsible for primary, secondary, tertiary, or quaternary protein structures:
a.   disulfide bonds that form between portions of a protein chain
b.   peptide bonds that form a chain of amino acids
c.   hydrogen bonds between the H of a peptide bond and the O of a peptide bond four amino acids away

What structural level is represented by the hydrophobic side chains of the amino acid residues at the center of a globular protein?
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4 years ago
a.   Disulfide bonds are a type of interaction between amino acid residues found in the tertiary and quaternary levels of protein structure.
b.   The peptide bonds in the sequence of amino acids form the primary level of protein structure.
c.   The hydrogen bonds between the peptide bonds along the polypeptide chain form the secondary structures of α helix or β-pleated sheet
tertiary structure
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