title: Systematic analysis of the lysine acetylome in Vibrio parahemolyticus.
abstract: Lysine acetylation of proteins is a major post-translational modification that plays an important regulatory role in almost every aspect of cells, both eukaryotes and prokaryotes. Vibrio parahemolyticus, a model marine bacterium, is a worldwide cause of bacterial seafood-borne illness. Here, we conducted the first lysine acetylome in this bacterium through a combination of highly sensitive immune-affinity purification and high-resolution LC-MS/MS. Overall, we identified 1413 lysine acetylation sites in 656 proteins, which account for 13.6% of the total proteins in the cells; this is the highest ratio of acetyl proteins that has so far been identified in bacteria. The bioinformatics analysis of the acetylome showed that the acetylated proteins are involved in a wide range of cellular functions and exhibit diverse subcellular localizations. More specifically, proteins related to protein biosynthesis and carbon metabolism are the preferential targets of lysine acetylation. Moreover, two types of acetylation motifs, a lysine or arginine at the +4/+5 positions and a tyrosine, histidine, or phenylalanine at the +1/+2 positions, were revealed from the analysis of the acetylome. Additionally, protein interaction network analysis demonstrates that a wide range of interactions are modulated by protein acetylation. This study provides a significant beginning for the in-depth exploration of the physiological role of lysine acetylation in V. parahemolyticus.
authors.affiliation: Institute of Proteomics and Molecular Enzymology, School of Life Sciences, Zhejiang Sci-Tech University , Hangzhou 310018, China.
authors.forename: Jianyi
authors.initials: J
authors.lastname: Pan
authors.forename: Zhicang
authors.initials: Z
authors.lastname: Ye
authors.forename: Zhongyi
authors.initials: Z
authors.lastname: Cheng
authors.forename: Xiaojun
authors.initials: X
authors.lastname: Peng
authors.forename: Liangyou
authors.initials: L
authors.lastname: Wen
authors.forename: Fukun
authors.initials: F
authors.lastname: Zhao
mesh_terms: D000107:Acetylation; D000595:Amino Acid Sequence; D001426:Bacterial Proteins / Q000737:chemistry* / Q000494:pharmacology; D063990:Gene Ontology; D008239:Lysine / Q000737:chemistry; D008969:Molecular Sequence Data; D060066:Protein Interaction Maps; D011499:Protein Processing, Post-Translational; D020543:Proteome / Q000737:chemistry* / Q000378:metabolism; D014736:Vibrio parahaemolyticus / Q000378:metabolism*
chemical_list: D001426:Bacterial Proteins; D020543:Proteome; D008239:Lysine