Fennero penaeus chinensis antibacterial protein gene and recombinant expression and use

Abstract

The invention relates to a Fenneropenaeus chinensis antimicrobial protein gene and the recombination expression and the application. It has the amino acid sequence of SEQ ID No.2 and basic group sequence of SEQ ID No.1 in sequence table. It selects the carrier of the antimicrobial protein pCR T7 / NT TOPO TA and host bacterium BL21(DE3)pLysS that could high efficiently express recombination protein. Aimed at the feature of plural disulfide bonds, using the oxidation reduction system made of oxidized form of glutathione and glutathione in separating and purification and protein recombination process, the recombination protein with antimicrobial ability would be gained. The protein has strong inhibition to the growth of gram positivebacteria, and some inhibition to gram negativebacteria.

Description

technical field [0001] The invention relates to the expression of an antimicrobial protein (crustin) gene in the field of genetic engineering, in particular to a Chinese prawn antimicrobial protein gene and its recombinant expression and application. Background technique [0002] Shrimp farming is one of the pillar industries of mariculture. With the increasing market demand for high-quality aquatic products, shrimp farming occupies an increasingly important position in aquaculture. Since the 1990s, large-scale disease outbreaks have caused huge losses to the mariculture industry. The abuse of antibiotics and the deterioration of the environment have made it difficult to fundamentally control the diseases of mariculture animals. [0003] Mariculture species live in a water environment rich in various microorganisms, and long-term environmental pressure makes them form effective defense functions. Antimicrobial peptides (proteins) are considered to be one of the main compone...

AI Technical Summary

Problems solved by technology

Since the 1990s, large-scale disease outbreaks have caused huge losses to the mariculture industry. The abuse of antibiotics and the deterioration of the environment have made it difficult to fundamentally control the diseases of mariculture animals.