Magnetic tweezers: development and use in single-molecule research

The use of magnetic tweezers for single-molecule micromanipulation has evolved rapidly since its introduction approximately 30 years ago. Magnetic tweezers have provided important insights into the dynamic activity of DNA-processing enzymes, as well as detailed, high-resolution information on the mechanical properties of DNA. These successes have been enabled by major advancements in the hardware and software components of these devices. These developments now allow for a much richer mechanistic understanding of the functions and mechanisms of DNA-binding enzymes. In this review, the authors briefly discuss the fundamental principles of magnetic tweezers and describe the advancements that have made it a superlative tool for investigating, at the single-molecule level, DNA and its interactions with DNA-binding proteins.

Automated summary

The use of magnetic tweezers in single-molecule manipulation has rapidly evolved in the past 30 years, providing important insights into the dynamic activity of DNA-processing enzymes and the mechanical properties of DNA. These advancements have enabled a richer mechanistic understanding of DNA-binding enzymes and their functions, making magnetic tweezers a superlative tool for investigating DNA interactions at the single-molecule level.