文献类型：期刊文献

英文题名：Identification and characterization of two types of amino acid-regulated acetyltransferases in actinobacteria

作者：Lu, Yu-Xing[1];Liu, Xin-Xin[1];Liu, Wei-Bin[1];Ye, Bang-Ce[1,2]

机构：[1]East China Univ Sci & Technol, State Key Lab Bioreactor Engn, Biomed Nanotechnol Ctr, Lab Biosyst & Microanal, Shanghai 200237, Peoples R China;[2]Shihezi Univ, Sch Chem & Chem Engn, Xinjiang 832000, Peoples R China

年份：2017

卷号：37

外文期刊名：BIOSCIENCE REPORTS

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000406193100005)】；

基金：This work is supported by the China NSF [grant numbers 21335003, 21575089, 21276079]; the National Key Technologies R&D Programs [grant number 2014AA021502], the Fundamental Research Funds for the Central Universities and the Natural Science Foundation of Shanghai [grant number 14ZR1409600].

语种：英文

摘要：One hundred and fifty GCN5-like acetyltransferases with amino acid-binding (ACT)-GCN5-related N-acetyltransferase (GNAT) domain organization have been identified in actinobacteria. The ACT domain is fused to the GNAT domain, conferring amino acid-induced allosteric regulation to these protein acetyltransferases (Pat) (amino acid sensing acetyltransferase, (AAPatA)). Members of the AAPatA family share similar secondary structure and are divided into two groups based on the allosteric ligands of the ACT domain: the asparagine (Asn)-activated PatA and the cysteine (Cys)-activated PatA. The former are mainly found in Streptomyces; the latter are distributed in other actinobacteria. We investigated the effect of Asn and Cys on the acetylation activity of Sven_0867 (SvePatA, from Streptomyces venezuelae DSM 40230) and Amir_5672 (AmiPatA, from Actinosynnema mirum strain DSM 43827), respectively, as well as the relationship between the structure and function of these enzymes. These findings indicate that the activity of PatA and acetylation level of proteins may be closely correlated with intracellular concentrations of Asn and Cys in actinobacteria. Amino acid-sensing signal transduction in acetyltransferases may be a mechanism that regulates protein acetylation in response to nutrient availability. Future work examining the relationship between protein acetylation and amino acid metabolism will broaden our understanding of post-translational modifications (PTMs) in feedback regulation.