Provided is a vector capable of co-expressing two different target proteins on the microbial surface using two promoters derived from Lactobacillus, and a method of expressing target proteins on the microbial surface using the vector. The vector containing foreign genes inserted therein is transformed into a microorganism, and allows different foreign proteins to be stably expressed on the surface of the microorganism. Furthermore, provided is a surface expression vector containing the gene pgsA encoding a poly-gamma-glutamate synthetase complex, and a method of expressing a target protein on the microbial surface using the vector. The vector containing foreign genes inserted therein is transformed into a microorganism, and allows the foreign proteins to be stably expressed on the surface of the microorganism.

Provided is a surface expression vector having pgsA, a gene encoding poly-gamma-glutamate synthetase, and a method of expressing a target protein on the microbial surface using the vector. The vector having foreign genes inserted therein is transformed into a microorganism and allows a foreign protein to be stably expressed on the surface of the microorganism.

Provided is a surface expression vector having pgsA, a gene encoding poly-gamma-glutamate synthetase, and a method of expressing a target protein on the microbial surface using the vector. The vector having foreign genes inserted therein is transformed into a microorganism and allows a foreign protein to be stably expressed on the surface of the microorganism.