for his work on ribonucleaseandfor their contribution to the understanding of the connection between chemical structure and catalytic activity of the ribonuclease molecule
for their elucidation of the enzymatic mechanism underlying the synthesis of adenosine triphosphateandfor his discovery of an ion-transporting enzyme, Na+, K+ -ATPase
... and further expand into its interior. Brazil became a dictatorship in 1937 under Getulio Vargas, returned to popular elections in 1945, but following a military coup ...