China Animal Husbandry and Veterinary Medicine ›› 2022, Vol. 49 ›› Issue (10): 3972-3981.doi: 10.16431/j.cnki.1671-7236.2022.10.030

• Preventive Veterinary Medicine • Previous Articles     Next Articles

Prokaryotic Expression and Bioinformatics Analysis of Theileria annulata enolase Gene

ZHENG Huizhen, PU Hao, MIAO Ronghao, GAN Lu, GE Xiaomin, Bayinchahan, LI Yongchang, GUO Qingyong   

  1. College of Veterinary Medicine, Xingjiang Agricultural University, Urumqi 830052, China
  • Received:2022-03-24 Online:2022-10-05 Published:2022-09-30

Abstract: 【Objective】 This study was aimed to obtain enolase gene from Xinjiang strain of Theileria annulata (T. annulata),and analyze the biological characteristics and reactionogenicity of the protein.【Method】 The enolase gene of T.annulata was amplified and cloned,and the prokaryotic expression vector pGEX-4T-1-enolase was constructed.The recombinant enolase protein was induced and purified.The reactivity of the recombinant enolase protein was verified by Western blotting.Bioinformatics methods were used to predict the physicochemical properties,hydrophilicity and hydrophobicity,transmembrane domain,signal peptide,phosphorylation,subcellular localization and protein interaction network of enolase gene encoded protein.【Result】 A 1 248 bp enolase gene fragment was amplified by PCR.The size of enolase recombinant protein was about 70 ku.The results of Western blotting showed that the recombinant protein reacted with the positive serum of T.annulata.enolase gene encoded 416 amino acids with a theoretical isoelectric point of 5.91 and 38 phosphorylation sites.The secondary structure was mainly composed of alpha helix (43.03%) and random coil (33.17%).It had 17 B cell epitopes,and the subcellular localization was mainly located in the cytoplasm.enolase protein interacted with phosphoglycerate mutase (PGAM),nucleoside diphosphate kinase (NDK),phosphoglycerate kinase (PGK) and heat shock protein 70 (HSP70).【Conclusion】 In this study, the enolase gene of T. annulata from Xinjiang was successfully cloned. The protein-protein interaction network predicted the protein interaction of enolase gene with glycolysis and energy metabolism. The results of this study laid a foundation for the related research on the energy metabolism pathway genes of T. annulata.

Key words: Theileria annulata; enolase gene; recombinant protein; biological characteristics

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