Please use this identifier to cite or link to this item:
Title: Shotgun identification of the structural proteome of shrimp white spot syndrome virus and iTRAQ differentation of envelope and nucleocapsid subproteomes
Authors: Li, Z. 
Lin, Q. 
Chen, J. 
Wu, J.L. 
Lim, T.K. 
Loh, S.S.
Tang, X. 
Hew, C.-L. 
Issue Date: Sep-2007
Citation: Li, Z., Lin, Q., Chen, J., Wu, J.L., Lim, T.K., Loh, S.S., Tang, X., Hew, C.-L. (2007-09). Shotgun identification of the structural proteome of shrimp white spot syndrome virus and iTRAQ differentation of envelope and nucleocapsid subproteomes. Molecular and Cellular Proteomics 6 (9) : 1609-1620. ScholarBank@NUS Repository.
Abstract: White spot syndrome virus (WSSV) is a major pathogen that causes severe mortality and economic losses to shrimp cultivation worldwide. The genome of WSSV contains a 305-kb double-stranded circular DNA, which encodes 181 predicted ORFs. Previous gel-based proteomics studies on WSSV have identified 38 structural proteins. In this study, we applied shotgun proteomics using off-line coupling of an LC system with MALDI-TOF/TOF MS/MS as a complementary and comprehensive approach to investigate the WSSV proteome. This approach led to the identification of 45 viral proteins; 13 of them are reported for the first time. Seven viral proteins were found to have acetylated N termini. RT-PCR confirmed the mRNA expression of these 13 newly identified viral proteins. Furthermore iTRAQ (isobaric tags for relative and absolute quantification), a quantitative proteomics strategy, was used to distinguish envelope proteins and nucleocapsid proteins of WSSV. Based on iTRAQ ratios, we successfully identified 23 envelope proteins and six nucleocapsid proteins. Our results validated 15 structural proteins with previously known localization in the virion. Furthermore the localization of an additional 12 envelope proteins and two nucleocapsid proteins was determined. We demonstrated that iTRAQ is an effective approach for high throughput viral protein localization determination. Altogether WSSV is assembled by at least 58 structural proteins, including 13 proteins newly identified by shotgun proteomics and one identified by iTRAQ. The localization of 42 structural proteins was determined; 33 are envelope proteins, and nine are nucleocapsid proteins. A comprehensive identification of WSSV structural proteins and their localization should facilitate the studies of its assembly and mechanism of infection. © 2007 by The American Society for Biochemistry and Molecular Biology Inc.
Source Title: Molecular and Cellular Proteomics
ISSN: 15359476
DOI: 10.1074/mcp.M600327-MCP200
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.


checked on May 17, 2022


checked on May 17, 2022

Page view(s)

checked on May 12, 2022

Google ScholarTM



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.