title: First Comprehensive Proteome Analyses of Lysine Acetylation and Succinylation in Seedling Leaves of Brachypodium distachyon L.
abstract: Protein acetylation and succinylation are the most crucial protein post-translational modifications (PTMs) involved in the regulation of plant growth and development. In this study, we present the first lysine-acetylation and lysine-succinylation proteome analysis of seedling leaves in Brachypodium distachyon L (Bd). Using high accuracy nano LC-MS/MS combined with affinity purification, we identified a total of 636 lysine-acetylated sites in 353 proteins and 605 lysine-succinylated sites in 262 proteins. These proteins participated in many biology processes, with various molecular functions. In particular, 119 proteins and 115 sites were found to be both acetylated and succinylated, simultaneously. Among the 353 acetylated proteins, 148 had acetylation orthologs in Oryza sativa L., Arabidopsis thaliana, Synechocystis sp. PCC 6803, and Glycine max L. Among the 262 succinylated proteins, 170 of them were found to have homologous proteins in Oryza sativa L., Escherichia coli, Sacchayromyces cerevisiae, or Homo sapiens. Motif-X analysis of the acetylated and succinylated sites identified two new acetylated motifs (K---K and K-I-K) and twelve significantly enriched succinylated motifs for the first time, which could serve as possible binding loci for future studies in plants. Our comprehensive dataset provides a promising starting point for further functional analysis of acetylation and succinylation in Bd and other plant species.
authors: College of Life Science, Capital Normal University, Beijing, 100048, China.
authors: Shoumin
authors: S
authors: Zhen
authors: College of Life Science, Capital Normal University, Beijing, 100048, China.
authors: Xiong
authors: X
authors: Deng
authors: College of Life Science, Capital Normal University, Beijing, 100048, China.
authors: Jian
authors: J
authors: Wang
authors: College of Life Science, Capital Normal University, Beijing, 100048, China.
authors: Gengrui
authors: G
authors: Zhu
authors: College of Life Science, Capital Normal University, Beijing, 100048, China.
authors: Hui
authors: H
authors: Cao
authors: College of Life Science, Capital Normal University, Beijing, 100048, China.
authors: Linlin
authors: L
authors: Yuan
authors: College of Life Science, Capital Normal University, Beijing, 100048, China.
authors: Yueming
authors: Y
authors: Yan
mesh_terms: D000107:Acetylation; D058431:Brachypodium / Q000378:metabolism*; D008239:Lysine / Q000378:metabolism*; D018515:Plant Leaves / Q000378:metabolism*; D010940:Plant Proteins / Q000378:metabolism*; D011499:Protein Processing, Post-Translational / Q000502:physiology*; D036226:Seedlings / Q000378:metabolism*; D019802:Succinic Acid / Q000378:metabolism*
chemical_list: D010940:Plant Proteins; D019802:Succinic Acid; D008239:Lysine