Bromination of alkyl quinolones by Microbulbifer sp. HZ11, a marine Gammaproteobacterium, modulates their antibacterial activity.
Bromination of alkyl quinolones by Microbulbifer sp. HZ11, a marine Gammaproteobacterium, modulates their antibacterial activity.
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海洋伽马变形杆菌 Microbulbifer sp HZ11 对烷基喹诺酮类药物的溴化可调节其抗菌活性
DOI:
10.1111/1462-2920.14654
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发表时间:
2019
影响因子:
5.1
通讯作者:
Fetzner S
中科院分区:
文献类型:
--
作者:
Ritzmann NH;Mährlein A;Ernst S;Hennecke U;Drees SL;Fetzner S
Alkyl quinolones (AQs) are multifunctional bacterial secondary metabolites generally known for their antibacterial and algicidal properties. Certain representatives are also employed as signalling molecules ofBurkholderiastrains andPseudomonas aeruginosa. The marine GammaproteobacteriumMicrobulbifersp. HZ11 harbours an AQ biosynthetic gene cluster with unusual topology but does not produce any AQ‐type metabolites under laboratory conditions. In this study, we demonstrate the potential of strain HZ11 for AQ production by analysing intermediates and key enzymes of the pathway. Moreover, we demonstrate that exogenously added AQs such as 2‐heptyl‐1(H)‐quinolin‐4‐one (referred to as HHQ) or 2‐heptyl‐1‐hydroxyquinolin‐4‐one (referred to as HQNO) are brominated by a vanadium‐dependent haloperoxidase (V‐HPOHZ11), which preferably is active towards AQs with C5–C9 alkyl side chains. Bromination was specific for the third position and led to 3‐bromo‐2‐heptyl‐1(H)‐quinolin‐4‐one (BrHHQ) and 3‐bromo‐2‐heptyl‐1‐hydroxyquinolin‐4‐one (BrHQNO), both of which were less toxic for strain HZ11 than the respective parental compounds. In contrast, BrHQNO showed increased antibiotic activity againstStaphylococcus aureusand marine isolates. Therefore, bromination of AQs by V‐HPOHZ11can have divergent consequences, eliciting a detoxifying effect for strain HZ11 while simultaneously enhancing antibiotic activity against other bacteria.
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影响因子:
4
作者:
Thierbach, Sven;Birmes, Franziska S.;Fetzner, Susanne
通讯作者:
Fetzner, Susanne
影响因子:
3.2
作者:
F. Reen;Sarah L. Clarke;C. Legendre;Christina M. McSweeney;Kevin S. Eccles;S. Lawrence;F. O'Gara;G. McGlacken
通讯作者:
G. McGlacken
影响因子:
4.4
作者:
Müller;Birmes;Niewerth;Fetzner
通讯作者:
Fetzner
影响因子:
15
作者:
Bernhardt, Peter;Okino, Tatsufumi;Winter, Jaclyn M.;Miyanaga, Akimasa;Moore, Bradley S.
通讯作者:
Moore, Bradley S.
影响因子:
--
作者:
Drees, Steffen Lorenz;Fetzner, Susanne
通讯作者:
Fetzner, Susanne