DNA does not always adopt the form of the double helix which is associated with the genetic code; it can also form intricate folds and act as an enzyme: a deoxyribozyme. Scientists have solved the first three-dimensional structure of this biomolecule that has proved much more flexible than previously thought. Chemists successfully isolated deoxyribozymes over 20 years ago – a DNA with the ability to act as an enzyme. However, until now they had not been able to associate its catalytic activity with the three-dimensional structure that provides such function to this DNA.