Expression vector carrying a gene coding for a phosphate-binding protein, a method for preparing the same and a method for preparing the same and a method for producing a polypeptide using the same

摘要

An expression vector carrying a gene coding for a phosphate-binding protein has been found to have a strong gene expression. The expression vector can be produced by transforming a bacterium belonging to Enterobacteriaceae with a recombinant vector carrying a DNA fragment containing a gene coding for a phosphate-binding protein to form transformants, selecting the transformants containing the desired recombinant vector from said transformants, and isolating the desired recombinant vector from the selected transformants. The expression vector is useful for producing polypeptides.