Anastassis Perrakis studies the proteins that play a role in the development of cancer, but he also develops techniques for analysing their structures. In his field, he is mainly known for his contributions to macromolecular crystallography, the creation of large proteins.
The most important method for analysing proteins is X-ray diffraction, a technique that makes it possible to determine the positions of atoms in a protein with extreme accuracy. The various software tools that Perrakis has developed make the process faster and more effective.