Analysis of white spot syndrome virus envelope protein complexome by two-dimensional blue native/SDS PAGE combined with mass spectrometry

Arch Virol. 2011 Jul;156(7):1125-35. doi: 10.1007/s00705-011-0954-7. Epub 2011 Mar 6.

Abstract

White spot syndrome virus (WSSV) is a large enveloped virus, but the organization of its envelope proteins remains largely unknown. In the present study, we used blue native polyacrylamide gel electrophoresis (BN-PAGE) and SDS-PAGE in combination with mass spectrometry to analyze the envelope protein complexome of WSSV. Our results show that the viral envelope consists of multi-protein complexes (MPCs). Within them, the envelope protein VP19 exists as a homotrimer, while another major envelope protein, VP28, mainly exists as a homotetramer. The most notable feature is that the majority of MPCs include VP26 and VP24, suggesting that these two proteins might serve as hub proteins to recruit low-abundance proteins to MPCs and play crucial roles in the process of protein complex formation. Furthermore, we found significant evidence for interactions between several low-abundance proteins, such as VP52B/VP38/VP33 and VP12/VP150. The result of this study may promote the further research on WSSV envelope assembly.

Publication types

  • Evaluation Study
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Electrophoresis, Gel, Two-Dimensional / methods*
  • Electrophoresis, Polyacrylamide Gel / methods
  • Mass Spectrometry / methods*
  • Models, Molecular
  • Viral Envelope Proteins / chemistry*
  • Viral Envelope Proteins / genetics
  • Viral Envelope Proteins / metabolism
  • White spot syndrome virus 1 / chemistry*
  • White spot syndrome virus 1 / genetics
  • White spot syndrome virus 1 / metabolism

Substances

  • Viral Envelope Proteins