In-depth proteomic profiling of the Singapore grouper iridovirus virion
2019
Yao, Defu | Liu, Yingfu | Chen, Xiuli | Lim, Teck Kwang | Wang, Lili | Aweya, Jude Juventus | Zhang, Yueling | Lin, Qingsong
Singapore grouper iridovirus (SGIV) is a lethal grouper virus containing 162 predicted ORFs. Previous proteomic studies led to identification of 73 SGIV structural proteins. Here, SDS-assisted tube-gel digestion and DOC-assisted in-solution digestion coupled with LC-ESI-MS/MS were applied to further profile the SGIV structural proteome. We identified a total of 90 SGIV structural proteins including 24 newly reported proteins. Additionally, several PTMs were identified, including 26 N-terminal acetylated proteins, three phosphorylated proteins, and one myristoylated protein. Importantly, 47 of the proteins that were identified are predicted to contain conserved domains. Our work greatly expands the repertoire of the SGIV structural proteome and provides more insight into the biology of SGIV.
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