Rhamnose-inducible expression system

摘要

Thus, the invention provides a method of inducing expression of a DNA sequence of interest in a host cell. The method includes contacting a recombinant host cell which is deficient in rhamnose catabolism, and has a recombinant DNA molecule comprising a rhamnose-inducible promoter operably linked to an open reading frame for a heterologous RNA polymerase, with rhamnose and an expression vector comprising a promoter for the heterologous RNA polymerase operably linked to a DNA sequence of interest.