Abstract: Inhibitors of the sodium-hydrogen exchanger are suitable on their own or in combination with other classes of active compound for the production of a medicament for the treament of diseases which are caused by protozoa; thus of diseases which are caused by animal- and human-pathogenic protozoa, such as by intracellularly active parasites of the classes Apicomplexa and Zoomastigophorea, in particular trypanosomes, plasmodia (malaria pathogens), leishmanias, babesias and theilerias, cryptosporidiidae, sarcocystidae, amoebae, coccidia and trichomonads.

Abstract: Expression control sequences are provided for the expression of pro- and eukaryotic proteins. These control sequences are produced by combining promoter sequences having a low signal strength and a high in vivo promoter strength and operator/repressor systems having a high association rate. Expression vectors containing such expression control sequences, microorganisms transformed with such expression vectors and methods for producing pro- and eukaryotic proteins using the expression control sequences, expression vectors and transformed microorganisms are also provided.