12 Questions
What is the absolute configuration at the α position in EVERY amino acid except glycine?
S configuration
Which amino acid classification does Aspartic Acid (Asp, D) belong to?
Acidic
What type of bonding stabilizes the α-helices structure in the secondary structure of proteins?
Hydrogen bonds
What reaction type forms peptide bonds between amino acids?
Addition-elimination reaction
Which of the following amino acids is classified as hydrophobic?
Valine (Val, V)
What occurs during the hydrolysis of a peptide bond?
Addition of a water molecule
What type of interactions primarily determine the way a linear sequence of amino acids folds on itself?
Hydrogen bonds
Where does disulfide bond formation typically occur in proteins?
In the extracellular space
What type of interactions stabilize the 3-D structure of proteins?
Van der Waals interactions
Which level of protein structure is determined by interactions between multiple polypeptides?
Quaternary structure
What is the function of the solvation shell in stabilizing proteins?
Facilitating protein folding
Which type of bond is key for stabilizing the 4th level of protein structure?
Disulfide bonds
Learn about the absolute configuration at the α position of amino acids, particularly the exception in glycine. Explore how amino acids act as dipolar ions under different pH conditions, being cationic at low pH, anionic at high pH, and zwitterionic at the isoelectric point (pI).
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