1. Istituto di Biochimica e Biochimica Clinica; Università Cattolica del Sacro Cuore; Roma Italy
2. Istituto di Cristallografia - CNR; Trieste Outstation; Trieste Italy
3. Istituto di Chimica del Riconoscimento Molecolare - CNR c/o Istituto di Biochimica e Biochimica Clinica, Università Cattolica del Sacro Cuore; Roma Italy
4. Biomolecular Photonics; University of Bielefeld; Bielefeld Germany
5. A.V. Shubnikov Institute of Crystallography of Federal Scientific Research Centre “Crystallography and Photonics” of Russian Academy of Sciences, Leninsky prospect 59; Moscow Russia
6. School of Biochemistry; University of Bristol; Bristol United Kingdom