Lysine crotonylation is widespread on proteins of diverse functions and localizations in Toxoplasma gondii

文献类型： 外文期刊

第一作者： Li, Fa-Cai

作者： Li, Fa-Cai;Yin, Fang-Yuan;Li, Fa-Cai;Nie, Lan-Bi;Nie, Lan-Bi;Elsheikha, Hany M.;Zhu, Xing-Quan;Zhu, Xing-Quan

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关键词： Posttranslational modification (PTM); Lysine crotonylation; Toxoplasma gondii; Tachyzoite

期刊名称：PARASITOLOGY RESEARCH （ 影响因子：2.289； 五年影响因子：2.403 ）

ISSN： 0932-0113

年卷期： 2021 年 120 卷 5 期

页码：

收录情况： SCI

摘要： Lysine crotonylation (Kcr) is an evolutionally conserved post-translational modification (PTM) on histone proteins. However, information about Kcr and its involvement in the biology and metabolism of Toxoplasma gondii is limited. In the present study, a global Kcr proteome analysis using LC-MS/MS in combination with immune-affinity method was performed. A total of 12,152 Kcr sites distributed over 2719 crotonylated proteins were identified. Consistent with lysine acetylation and succinylation in Apicomplexa, Kcr was associated with various metabolic pathways, including carbon metabolism, pyrimidine metabolism, glycolysis, gluconeogenesis, and proteasome. Markedly, many stage-specific proteins, histones, and histone-modifying enzymes related to the stage transition were found to have Kcr sites, suggesting a potential involvement of Kcr in the parasite stage transformation. Most components of the apical secretory organelles were identified as crotonylated proteins which were associated with the attachment, invasion, and replication of T. gondii. These results expanded our understanding of Kcr proteome and proposed new hypotheses for further research of the Kcr roles in the pathobiology of T. gondii infection.

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