May be this could help, *Protein Expression and Purification 45 (2006) 191–199* * In vitro activation, purification, and characterization of Escherichia coli expressed aryl-alcohol oxidase, a unique H2O2-producing enzyme. Francisco J. Ruiz-Dueñas, Patricia Ferreira, María J. Martínez, Angel T. Martínez * an in-vitro refolding of a fungal 566 AA FAD-containing protein with FAD added as refolding additive. We have managed to solve the structure.
Hope it helps. -- PhD. Israel Sanchez Fernandez EM-lab Departamento de Ciencia de Proteinas CIB-CSIC Madrid España