Influence of the his tag on the structure of recombinant chlorocatechol 1,2-dioxygenase monitored by Circular Dichroism (CD) and assay activity - Araújo, Ana Paula Ulian de; Pinto, A. M. A.; Beltramini, Leila Maria (Reunião Anual da Sociedade Brasileira de Bioquímica e Biologia Molecular, 1998)