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The terms motif (fold) and domain describe levels of protein organization more complicated than primary or secondary structure. Differentiate between motifs and domains by moving each phrase to the appropriate bin. Note: If you answer any part of this question incorrectly, a single red X will appear indicating that one or more of the phrases are sorted incorrectly.
Motifs Domain Both
Choices are:
Stabilized by hydrophobic interactions
Stable globular units
depends on primary structure
clusters of seconday structure
Beta Alpha Beta unit
may be distinct functional units in a protein
unit of tertiary structure
repetetive supersecondary structure
may retain a 3D structure when seperated from rest of the protein

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Answer:

Each specific property of motif and domain is explained.

Explanation:

Domain;

  • May retain a 3D structure when separated from rest of the protein.          
  • Unit of tertiary structure because alpha helix and beta sheets are units of secondary structure.
  • Stable globular units like pyruvate kinase
  • May be distinct functional units in a protein

Motif;

  • Repetetive supersecondary structure because they contain cluster of secondary structure.
  • Beta Alpha Beta unit is an example of motif
  • Clusters of secondary structure

Both Motif and Domain;

  • Stabilized by hydrophobic interactions like hydrogen bonding stabilize the both.
  • Depends on primary structure like the arrangement of amino acid in polypeptide chain determine the secondary and tertiary structure of proteins.

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