Preparation method of fusion protein inhibiting Clostridium perfringens infection
A protein and coding gene technology, which is applied in the field of preparation of fusion proteins for inhibiting Clostridium perfringens infection, and can solve the problems of difficulty in increasing the renaturation rate and the like
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0050] Example 1. Soluble expression of α-β2-ε-his
[0051] 1. Synthetic genes
[0052] The application designed three fusion genes, which are the α-β2-ε-hisY gene shown in SEQ ID No.1, the α-β2-ε-hisW gene shown in SEQ ID No.3, and the α-β2-ε-hisW gene shown in SEQ ID No.4. The pmα-β2-ε-hisW gene indicated.
[0053] Both the α-β2-ε-hisY gene and the α-β2-ε-hisW gene encode the protein α-β2-ε-his shown in SEQ ID No.2. The pmα-β2-ε-hisW gene encodes the protein pmα-β2-ε-hisW shown in SEQ ID No.5. α-β2-ε-his is a protein obtained by deleting amino acid residues 52-146, 464-492 and 743-750 of pmα-β2-ε-hisW.
[0054] The α-β2-ε-Y gene shown in the 151-2814th position of SEQ ID No.1 is synthesized by chemical synthesis (the protein shown in the 51-937th amino acid residue of encoding SEQ ID No.2) , the α-β2-ε-W gene shown in the 151-2814th position of SEQ ID No.3 (the protein shown in the 51-937th amino acid residue of encoding SEQ ID No.2), the The pmα-β2-ε-W gene represented...
Embodiment 2
[0075] Embodiment 2, animal immune protective test of α-β2-ε-his
[0076] 1. Preparation of anti-Clostridium perfringens vaccine
[0077] The α-β2-ε-his protein purified by molecular sieves in Example 1 was dissolved in sterile PBS to obtain an α-β2-ε-his solution with an α-β2-ε-his concentration of 1000 μg / mL for immunization. The α-β2-ε-his solution and Freund's adjuvant were mixed in an equal volume of 1:1, and emulsified to prepare an oil emulsion vaccine, which was named the first vaccine. The α-β2-ε-his solution and incomplete Freund's adjuvant were mixed in equal volumes of 1:1, and emulsified to prepare an oil emulsion vaccine, which was named as the secondary vaccine.
[0078] Take out the A-type Clostridium perfringens virulent strain C57-10, the B-type Clostridium perfringens virulent strain C58-5, and the C-type Clostridium perfringens virulent strain purchased from the China Veterinary Drug Administration. Strain C59-4, Clostridium perfringens type D virulent st...
Embodiment 3
[0101] Example 3, Optimization of α-β2-ε-his Induced Expression Conditions
[0102] 1. Optimization of induction temperature and time
[0103] Inoculate BL21(DE3) / pET30a-α-β2-ε-Y in LB liquid medium containing 50 μg / ml kanamycin (add kanamycin to LB liquid medium until the concentration of kanamycin is 50 μg / ml obtained medium), 37 ° C, using Thermo MaxQ6000 type full-temperature shaker 200 rpm shaking culture to OD 600 When the value (the LB liquid medium containing 50 μg / ml kanamycin was used as the blank control) reached 0.6, isopropylthio-β-D-galactoside (IPTG) was added to induce the following six kinds of expression respectively. The first induced expression was induced with 0.75 mM IPTG for 1 hour at 37°C. The second induced expression was induced with 0.75 mM IPTG for 2 hours at 37°C. The third induced expression was induced with 0.75 mM IPTG for 4 hours at 37°C. The fourth induced expression was induced with 0.75 mM IPTG for 5 hours at 37°C. The fifth induced exp...
PUM
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com