This PDF file includes:

• fig. S1. Scaffold/staple layout of the DNA origami template.
  
• fig. S2. Schematics of the DNA origami template.
  
• fig. S3. TEM images of the DNA origami templates after thermal annealing and agarose gel purification.
  
• fig. S4. Additional TEM images of the DNA origami–based metamolecules.
  
• fig. S5. CD response of the plasmonic metamolecules at different pH values with pH-insensitive locks.
  
• table S1. Staple sequences of the DNA origami template.
  
• table S2. Sequences of the pH-sensitive DNA locks.
  
• table S3. Thermal annealing temperatures and times.

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