Which of the Following Can Be Found in DNA-Binding Domains

Question

Which of the following can be found in DNA-binding domains?
A)zinc fingers
B)glutamine-rich regions
C)bZIP motifs
D)bHLH motif
E)all of the choices are correct.

Accepted Answer

All of the choices can be found in DNA-binding domains. Zinc fingers are protein domains that coordinate a zinc ion to stabilize protein-DNA interactions. Glutamine-rich regions are found in transcription factors that interact with chromatin modifying enzymes. bZIP motifs contain basic and leucine residues and form a coiled-coil structure that enables binding to specific DNA sequences. bHLH motifs contain basic residues and a helix-loop-helix structure that enables binding to DNA.