2,3-Butanediol catabolism in Pseudomonas aeruginosa PAO1
2,3-Butanediol catabolism in Pseudomonas aeruginosa PAO1
复制标题
铜绿假单胞菌 PAO1 中的 2,3-丁二醇分解代谢
DOI:
10.1111/1462-2920.14332
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发表时间:
2018-11-01
影响因子:
5.1
通讯作者:
Ma, Cuiqing
中科院分区:
文献类型:
--
作者:
Liu, Qiuyuan;Liu, Yidong;Ma, Cuiqing
2,3-Butanediol (2,3-BD) is a primary microbial metabolite that enhances the virulence of Pseudomonas aeruginosa and alters the lung microbiome. 2,3-BD exists in three stereoisomeric forms: (2R,3R)-2,3-BD, meso-2,3-BD and (2S,3S)-2,3-BD. In this study, we investigated whether and how P. aeruginosa PAO1 utilizes these 2,3-BD stereoisomers and showed that all three stereoisomers were transformed into acetoin by (2R,3R)-2,3-butanediol dehydrogenase (BDH) or (2S,3S)-2,3-BDH. Acetoin was cleaved to form acetyl-CoA and acetaldehyde by acetoin dehydrogenase enzyme system (AoDH ES). Genes encoding (2R,3R)-2,3-BDH, (2S,3S)-2,3-BDH and the E1 and E2 components of AoDH ES were identified as part of a new 2,3-BD utilization operon. In addition, the regulatory protein AcoR promoted the expression of this operon using acetaldehyde, a cleavage product of acetoin, as its direct effector. The results of this study elucidate the integrated catabolic role of 2,3-BD and may provide new insights in P. aeruginosa-related infections.