Adaptive responses and metabolic strategies of Novosphingobium sp. ES2-1-17β-estradiol analyzed through integration of genomic and proteomic approaches
文献类型: 外文期刊
第一作者: Li, Shunyao
作者: Li, Shunyao;Yang, Wei;Mo, Jingjing;Wang, Yubing;Li, Yucheng;Gao, Yanzheng;Sun, Kai;Lu, Chao
作者机构:
关键词: Microbial degradation; Steroid estrogens; Novosphingobium; Molecular mechanisms; Genomics and proteomics
期刊名称:JOURNAL OF HAZARDOUS MATERIALS ( 影响因子:13.6; 五年影响因子:12.7 )
ISSN: 0304-3894
年卷期: 2024 年 461 卷
页码:
收录情况: SCI
摘要: Environmental 17 beta-estradiol (E2) can cause potential harm to ecological balance and human health. Novosphingobium sp. ES2-1 is an E2-degrading bacterium previously obtained, which converts E2 to estrone (E1) and then to 4-hydroxyestrone (4-OH-E1) followed by oxidation to form metabolites with long-chain structure during upstream degradation. Herein, we found that intracellular enzymes were the major contributors to E2 biodegradation by strain ES2-1. A total of 243 proteins were dys-expressed under E2 condition, 123 were up-regulated and 120 were down-regulated thereinto. The up-regulated members of ABC transport systems, aromatics degradation, and fatty acid degradation indicated a reinforced transfer and utilization of E2. Cytochrome P450 monooxygenase (EstP1), 2-keto-4-pentenoate hydratase, pyruvate dehydrogenase, acetyl-CoA acetyltransferase, TonB-dependent receptor were involved in E2 catabolism. During downstream degradation, the metabolites with long-chain structure were decomposed adopting beta-oxidation pattern and ultimately entered the TCA cycle; 2 keto-4-pentenoic acid might be an emblematic product of such process. Furthermore, E2 converting to E1 was catalyzed by 17 beta-dehydrogenase probably encoded by IM701_16645 or IM701_16910; 4-OH-E1 meta-cleavage was catalyzed by a dioxygenase encoded by IM701_20340 or IM701_21000 or IM701_09625. Our study provided an in-depth insight into the adaptive responses and metabolic strategies of Novosphingobium to E2.
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