Identification and characterization of a prawn white spot syndrome virus gene that encodes an envelope protein VP31

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Abstract

Based on a combination of SDS-PAGE and mass spectrometry, a protein with an apparent molecular mass of 31 kDa (termed as VP31) was identified from purified shrimp white spot syndrome virus (WSSV) envelope fraction. The resulting amino acid (aa) sequence matched an open reading frame (WSV340) of the WSSV genome. This ORF contained 783 nucleotides (nt), encoding 261 aa. A fragment of WSV340 was expressed in Escherichia coli as a glutathione S-transferase (GST) fusion protein with a 6His-tag, and then specific antibody was raised. Western blot analysis and the immunoelectron microscope method (IEM) confirmed that VP31 was present exclusively in the viral envelope fraction. The neutralization experiment suggested that VP31 might play an important role in WSSV infectivity. © 2005 Elsevier Inc. All rights reserved.

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Li, L., Xie, X., & Yang, F. (2005). Identification and characterization of a prawn white spot syndrome virus gene that encodes an envelope protein VP31. Virology, 340(1), 125–132. https://doi.org/10.1016/j.virol.2005.06.007

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