›› 2019, Vol. 31 ›› Issue (1): 30-38.DOI: 10.3969/j.issn.1004-1524.2019.01.04

• OAnimal Science • Previous Articles     Next Articles

Prokaryotic expression and bioinformatics analysis of orf virus Anhui strain 023 gene

ZHANG Gaofeng1, YANG Kankan1, ZHANG Qian1, WANG Yuanhong1, YU Zhaorong1, ZHANG Xueqi1, LU Zhimin1, LIU Zimin1, LI Yongdong2,*, WANG Yong1,*   

  1. 1. College of Animal Science and Technology, Anhui Agricultural University, Hefei 230036, China;
    2. Ningbo Municipal Center for Disease Control and Prevention, Ningbo 315010, China
  • Received:2018-05-28 Online:2019-01-25 Published:2019-04-09

Abstract: Our study was aimed at cloning and expressing the 023 gene of orf virus (ORFV) Anhui strain, and predicting its biological characteristics. The 023 gene was amplified by PCR, then successfully expressed using a prokaryotic vector. Then, the expressed protein was purified, and identified by SDS-PAGE and Western-blot. In addition, the physicochemical properties, secondary structure, signal peptide, transmembrane domain of the protein was analyzed by bioinformatics software. The results showed that the 023 gene of ORFV Anhui strain was 819 bp in length which could encode 272 amino acids. The size of expressed protein was approximately 42 ku, which was mainly expressed in inclusion body form with good reactogenicity. The results from bioinformatics analysis showed that the protein was a hydrophilic stable protein. There were 27.57% α-helix (h), 17.28% extended chain (e), 12.13% β-turn (t), 43.01% random coli (c). There was no signal peptide region and transmembrane domain. Maybe, it had 30 phosphorylation sites. Moreover, there were four B cell epitopes, three CTL epitopes and three Th epitopes. In conclusion, our study could provide a reference for further study of the structure and function of ORFV 023 gene.

Key words: orf virus, 023 gene, cloning and expression, bioinformatics

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