| abstract |
A microbial cell having in the genome a smuA gene encoding a SmuA sucrose mutase, wherein at least one smuA promoter element is replaced by at least one other promoter (replacement promoter) selected from: a) an endogenous promoter, different from the smuA promoter, from the cell's own stem, b) a homologous to the endogenous promoter according to a) promoter from a foreign donor strain and c) a functional promoter fragment of a) or b). |