Discovery of scale free organization of amino acid pairs in proteins after establishing an 8 dimensional data cube of relevant parameters for amino acid pairwise interaction SBP realized that this interaction is scale free. SBP expected that this insight will become an important for future ab initio folding strategies.
Early seminal papers on use of neural networks in protein structure prediction, together with Søren Brunak, Benny Lautrup, Henrik and Jakob Bohr and Rodney Cotterill Professor Steffen B Petersen published a series of papers on neural network prediction of protein structure.
Steffen B Petersen contributed to the initial early development of MRI, an important diagnostic technique that is now available in most university hospitals across the world. Professor Paul C. Lauterbur. who received the Nobel price in 2001 for his ground breaking work on MRI, Magnetic Resonance Imaging used 3 of the papers in his Nobel lecture which he had co-authored with SBP.