Match the Protein or Structural Feature on the Left with One

Match the protein or structural feature on the left with one appropriate description on the right.
____ Activator
(a) A positive regulator
____ Helix-turn-helix
(b) A negative regulator
____ Leucine zipper
(c) Facilitates transcription only when bound to a signal
____ Repressor
molecule
____ Zinc finger
(d) A DNA-binding structural motif found in many
prokaryotic regulatory proteins
(e) A structural feature involved in protein-protein interactions
between some regulatory protein monomers
(f) A protein that dissociates from DNA when bound to a
signal molecule
(g) A DNA-binding structural motif found in many eukaryotic
regulatory proteins