Qualitative Proteome-Wide Analysis Reveals the Diverse Functions of Lysine Crotonylation in Dendrobium huoshanense

Author:

Wu Jing,Meng Xiaoxi,Jiang Weimin,Wang Zhaojian,Zhang Jing,Meng Fei,Yao Xiaoyan,Ye Mengjuan,Yao Liang,Wang Longhai,Yu Nianjun,Peng Daiyin,Xing Shihai

Abstract

The lysine crotonylation of histone proteins is a newly identified posttranslational modification with diversified cellular functions. However, there are few reports on lysine crotonylation of non-histone proteins in medicinal plant cells. By using high-resolution liquid chromatography–mass spectrometry (LC-MS) coupled with highly sensitive-specific immune-affinity antibody analysis, a whole crotonylation proteome analysis of Dendrobium huoshanense was performed. In total, 1,591 proteins with 4,726 lysine crotonylation sites were identified; among them, 11 conserved motifs were identified. Bioinformatic analyses linked crotonylated proteins to the drought stress response and multiple metabolic pathways, including secondary metabolite biosynthesis, transport and catabolism, energy production and conversion, carbohydrate transport and metabolism, translation, and ribosomal structure and biogenesis. This study contributes toward understanding the regulatory mechanism of polysaccharide biosynthesis at the crotonylation level even under abiotic stress.

Funder

National Natural Science Foundation of China

Natural Science Foundation of Anhui Province

Publisher

Frontiers Media SA

Subject

Plant Science

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