Myoglobin and expression vector and expression engineering bacterium thereof, and use thereof

Abstract

The present disclosure provides myoglobin (MB) and an expression vector and an expression engineering bacterium thereof, and use thereof, and relates to the technical field of genetic engineering. In the present disclosure, recombinant Escherichia coli strains with signal peptides Pel B and Omp A inserted under same conditions have an expression level of Sus scrofa myoglobin (SsMB) increased by 2.06 and 1.17 times, respectively, compared with an original expression strain of the SsMB. The signal peptides that can increase the expression level of the SsMB provide a new idea for research and application of improving the expression level of the SsMB.

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