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A novel chimeric recombinant protein PDHB-P80 of Mycoplasma agalactiae as a potential diagnostic tool | ||
| Molecular Biology Research Communications | ||
| دوره 9، شماره 3، 2020، صفحه 123-128 اصل مقاله (163.01 K) | ||
| نوع مقاله: Original article | ||
| شناسه دیجیتال (DOI): 10.22099/mbrc.2020.37684.1513 | ||
| نویسندگان | ||
| Malihe Akbarzadeh-Niaki1؛ Abdollah Derakhshandeh* 2؛ Nasrin Kazemipour3؛ Vida Eraghi1؛ Farhid Hemmatzadeh4 | ||
| 1Department of Pathobiology, Biotechnology Section, School of Veterinary Medicine, Shiraz University, Shiraz, Iran | ||
| 2Department of Pathobiology, School of Veterinary Medicine, Shiraz University, Shiraz, Iran | ||
| 3Department of Basic Sciences, School of Veterinary Medicine, Shiraz University, Shiraz, Iran | ||
| 4School of Animal and Veterinary Sciences, The University of Adelaide, SA, Australia | ||
| چکیده | ||
| The aim of this study was to construct, expression of a novel recombinant chimeric protein consisting of Pyruvate dehydrogenase beta subunit (PDHB) and high antigenic region of integral membrane lipoprotein P80 of Mycoplasma agalactiae as a potential diagnostic tool. The full-length sequence of pdhb and a portion of antigenic regions of P80 were selected and analyzed by CLC main workbench 5.5 software. Several linkers and three dimensional structure of PDHB-P80 were compared to the native PDHB and analyzed to select a proper one for expression. The fusion gene sequence was optimized and synthesized in pMAT cloning vector. The synthetic pMAT-pdhb-p80 was digested using Bam HI and Sal I restriction enzymes and ligated into pMAL-p5X expression vector. The pMAL-pdhb-p80 construct was transfected into E.coli BL21 strain cells and expressed protein were purified using amylose resin. and the purified protein was analyzed in sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE) and Western blotting. In silico analysis demonstrated that fusion proteins using IgG4 middle hinge (CPSCP) with TM-score of 0.99 showed the higher similarity between three dimensional structure of PDHB before and after fusion with high antigenic region of P80. Successful cloning verified by PCR colony, double digestion and sequence analysis. Besides, SDS-PAGE analysis and Western blotting indicated and confirmed the expression of intact recombinant chimeric protein MBP-PDHB-P80 along with some truncated forms of the recombinant protein. it could be concluded that the fusion construct has a potential for serodiagnostic assay in future studies. | ||
| کلیدواژهها | ||
| Contagious agalactia؛ Serodiagnostic assay؛ Antigen؛ Recombinant fusion | ||
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| مراجع | ||
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