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Updated: Jul 18, 2026
09:26
DNA-Tethered RNA Polymerase for Programmable In vitro Transcription and Molecular Computation
Published on: December 29, 2021
Charge transfer through DNA nanoscaled assembly programmable with DNA building blocks.
Yasuko Osakada1, Kiyohiko Kawai, Mamoru Fujitsuka
1Institute of Scientific and Industrial Research (SANKEN), Osaka University, Mihogaoka 8-1, Ibaraki, Osaka 567-0047, Japan.
Summary
Researchers demonstrated rapid charge-transfer through DNA nanoassemblies, enabling programmable DNA nanoelectronics. This breakthrough shows charge-transfer is achievable in DNA nanoscale assemblies, paving the way for advanced electronic devices.
Area of Science:
- Molecular biology
- Nanotechnology
- Nanoelectronics
Background:
- DNA nanostructures offer programmable molecular recognition for nanoelectronic applications.
- Efficient charge-transfer (CT) through DNA nanoassemblies is crucial for advancing DNA nanoelectronics.
Purpose of the Study:
- To investigate and demonstrate long-range charge-transfer (CT) in DNA nanoscale assemblies.
- To explore the potential of DNA sequences for programmable charge transport.
Main Methods:
- Direct absorption measurements were used to detect charge-transfer.
- A 140-Å DNA assembly utilizing a GC-rich repetitive sequence was constructed by simple mixing of DNA building blocks.
Main Results:
- Direct absorption measurements confirmed long-range charge-transfer (CT) over a 140-Å distance within the DNA assembly.
- The study demonstrated that CT through DNA nanoscale assemblies is feasible and can be programmed by DNA sequence design.
Conclusions:
- Charge-transfer through DNA nanoscale assemblies is achievable.
- Programmable DNA sequences can control and facilitate charge-transfer, opening new avenues for DNA-based nanoelectronics.
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