›› 2015, Vol. 42 ›› Issue (2): 317-323.doi: 10.16431/j.cnki.1671-7236.2015.02.012

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Construction of Bait Vector of Infectious Bursal Disease Virus VP4 and Screening of the Interacted Proteins of Host Cell Using Yeast Two-hybrid System

WANG Nian, CHEN Yu-ming, ZHANG Li-zhou, GAO Li, LU Zhen, GAO Yu-long, WANG Yong-qiang, GAO Hong-lei, LIU Chang-jun, CUI Hong-yu, WANG Xiao-mei, QI Xiao-le   

  1. Division of Avian Infectious Diseases, State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agriculture Sciences, Harbin 150001, China
  • Received:2014-08-13 Online:2015-02-20 Published:2015-02-13

Abstract: Viral protein 4 (VP4) is an important non-structural protein with proteolytic enzyme activity encoded by infectious bursal disease virus (IBDV) genome that catalyzes the hydrolysis of polyprotein pVP2-VP4-VP3 to form viral proteins pVP2,VP4,VP3,which plays an important role in the process of viral proteins maturity.To study the interaction between VP4 and the host cell,VP4 full-length cDNA sequence was amplified and inserted into pGBKT7 vector to construct a bait vector (pGBGtVP4).The result of autoactivation assay showed that pGBGtVP4 vector had no autoactivation and virulence in Y2H gold yeast cell.After screening,sequencing and confirming interaction,22 kinds of potential interacted proteins were obtained from the expression library of chicken embryo fibroblasts (CEF) using the matchmaker gold yeast two-hybrid system.This study laid the foundation for further researches on the effect and mechanism of the interaction of IBDV VP4 and its host cell.

Key words: infectious bursal disease virus (IBDV); VP4; yeast two-hybrid; bait vector; interacted protein

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