Key points are not available for this paper at this time.
Making DNA work: A DNA nanomachine with a mechanism based on a DNA duplex–triplex transition (see figure) was constructed. The key component is a DNA triplex that contains C+GC triplets and is only stable under acidic conditions. The DNA machine uses H+ and OH− ions as fuel and its only waste products are H2O and NaCl.
Chen et al. (2004) studied this question.