Multiple Choice
A protein C-terminus is named that way because it contains what molecule?
6. Proteins
Protein Basics
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Which of the following is false about the R group of amino acids?
A
They give polypeptide chains unique properties
B
They assist in forming complex protein structures
C
They control the stereoisomer form of the amino acid
D
They can be nonpolar
Verified step by step guidance1
Understand that the R group, or side chain, of an amino acid is the variable part that distinguishes one amino acid from another.
Recognize that the R group contributes to the unique properties of polypeptide chains, such as hydrophobicity, charge, and reactivity, which influence protein folding and function.
Acknowledge that R groups play a role in the formation of complex protein structures by participating in interactions like hydrogen bonds, ionic bonds, and hydrophobic interactions.
Note that the stereoisomer form of an amino acid is determined by the configuration around the alpha carbon, not the R group. The stereochemistry is typically L-form in proteins.
Identify that R groups can indeed be nonpolar, polar, acidic, or basic, affecting the solubility and interaction of the amino acid within a protein or in a cellular environment.
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