Systematic Identification and Analysis of Lysine Succinylation in Strawberry Stigmata

作者：Fang, Xianping; Xin, Ya; Sheng, Zheliang; Liu, Hui; Jiang, Aili; Wang, Fang; Yang, Jian; Xi, Xiaojun; Zha, Qian; Zhang, Liqing; Dai, Liangying; Yan, Chengqi^*; Chen, Jianping^*

来源：Journal of Agricultural and Food Chemistry, 2018, 66(50): 13310-13320.

DOI：10.1021/acs.jafc.8b02708

• strawberry stigmata
• succinylation
• proteomics
• AP2
• clathrin

The various post-translational modifications (PTMs) of plant proteins have important regulatory roles in development. We therefore examined various modified proteins from strawberry stigmata and found that succinylation of lysine residues was the most abundant type of modification. We then subjected proteins from strawberry stigmata to an efficient enrichment method for succinylated peptides and identified 200 uniquely succinylated lysines (Suks) in 116 proteins. A bioinformatics analysis revealed that these proteins are involved in important biological processes, including stress responses, vesicular transport, and energy metabolism. Proteomics, combined with immunoprecipitation and immunoblotting, revealed an obvious increase in succinylation of the assembly polypeptide 2 (AP2) and clathrin from 0.5 to 2 h after pollination, suggesting that succinylation is involved in the recognition of pollen-stigma signaling substances and vesicular transport. These results suggest that AP2/clathrin-mediated vesicular transport processes are regulated by lysine succinylation during pollen recognition.

• 出版日期2018-12-19
• 单位宁波大学; 杭州市农业科学研究院; 湖南农业大学; 上海市农业科学院; 宁波市农业科学研究院; 中国科学院、水利部成都山地灾害与环境研究所