ACTA VETERINARIA ET ZOOTECHNICA SINICA ›› 2018, Vol. 49 ›› Issue (3): 644-651.doi: 10.11843/j.issn.0366-6964.2018.03.023

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Cloning, Protein Structure Analysis and Antigenic Epitopes Prediction of Immune-related Gene, CAMK/TSSK Protein Kinase Gene of Parabronema skrjabini

WANG Wen-long1, ZHAO Xue-liang1, SUN Ke1, FENG Chen-chen1, BAI Li-yan1, WANG Shu-yi1,3, WANG Meng-ya2, LIU Chun-xia4*   

  1. 1. Key Laboratory of Clinical Diagnosis and Treatment Technology in Animal Disease of Ministry of Agriculture, College of Veterinary Medicine, Inner Mongolia Agricultural University, Hohhot 010018, China;
    2. College of Animal Science, Inner Mongolia Agricultural University, Hohhot 010018, China;
    3. Inner Mongolia Center for Disease Control and Prevention, Hohhot 010018, China;
    4. College of Life Science, Inner Mongolia Agricultural University, Hohhot 010018, China
  • Received:2017-10-19 Online:2018-03-23 Published:2018-03-23

Abstract:

Our study was conducted to explore protein structure, function and the possibility as a vaccine candidate antigen of immune-related gene, CAMK/TSSK protein kinase (CTPK) gene of Parabronema skrjabini. RNA was extracted from Parabronema skrjabini and cDNA was obtained by reverse transcription. A pair of specific primers was designed to amplify the coding region of CTPK gene. The protein structure and antigenic epitopes of CTPK were analyzed by using bioinformatics softwares. The bioinformatic analysis results showed that the length of CTPK gene was 519 bp, contained an open reading frame of 519 bp which encoded a polypeptide of 173 amino acids with a predicted molecular mass of 20.264 kDa and PI of 9.53. Analyses of domain and structure indicated that the protein was dominantly composed of 60% hydrophillic amino acid residues, with numerous curls and no transmembrane structure. The antigenic epitopes prediction results indicated that CTPK protein is a hydrophilic protein with high antigenicity. It contained more potential B cell antigen epitopes and more T cell antigen epitopes. These results possibly suggested that the CTPK antigen has been promised as a candidate for immune diagnostics and could be used as a vaccine against Parabronema skrjabini. This research provide the theoretical basis in order to establish iELISA corresponding diagnostic kits and development DNA vaccine.

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