A microbial transporter of the dietary antioxidant ergothioneine.
A microbial transporter of the dietary antioxidant ergothioneine.
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DOI:
10.1016/j.cell.2022.10.008
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发表时间:
2022-11-23
期刊:
影响因子:
64.5
通讯作者:
Hatzios, Stavroula K.
中科院分区:
文献类型:
--
作者:
Dumitrescu, Daniel G.;Gordon, Elizabeth M.;Kovalyova, Yekaterina;Seminara, Anna B.;Duncan-Lowey, Brianna;Forster, Emily R.;Zhou, Wen;Booth, Carmen J.;Shen, Aimee;Kranzusch, Philip J.;Hatzios, Stavroula K.
Low-molecular-weight (LMW) thiols are small-molecule antioxidants required for the maintenance of intracellular redox homeostasis. However, many host-associated microbes, including the gastric pathogen Helicobacter pylori, unexpectedly lack LMW-thiol biosynthetic pathways. Using reactivity-guided metabolomics, we identified the unusual LMW thiol ergothioneine (EGT) in H. pylori. Dietary EGT accumulates to millimolar levels in human tissues and has been broadly implicated in mitigating disease risk. Whereas certain microorganisms synthesize EGT, we discovered that H. pylori acquires this LMW thiol from the host environment using a highly selective ATP-binding cassette transporter—EgtUV. EgtUV confers a competitive colonization advantage in vivo and is widely conserved in gastrointestinal microbes. Furthermore, we found that human fecal bacteria metabolize EGT, which may contribute to production of the disease-associated metabolite trimethylamine N-oxide. Collectively, our findings illustrate a previously unappreciated mechanism of microbial redox regulation in the gut and suggest that inter-kingdom competition for dietary EGT may broadly impact human health. Low-molecular-weight thiols are necessary for the maintenance of intracellular redox homeostasis, yet certain clinically important microbial pathogens are not known to synthesize these antioxidants. By analyzing H. pylori, a microbial transporter of ergothioneine was discovered that regulates microbial redox homeostasis in the gut.
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DOI:
10.1107/s0907444904019158
发表时间:
2004-12-01
影响因子:
2.2
作者:
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通讯作者:
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DOI:
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发表时间:
2010-02
期刊:
Acta crystallographica. Section D, Biological crystallography
影响因子:
--
作者:
Adams PD;Afonine PV;Bunkóczi G;Chen VB;Davis IW;Echols N;Headd JJ;Hung LW;Kapral GJ;Grosse-Kunstleve RW;McCoy AJ;Moriarty NW;Oeffner R;Read RJ;Richardson DC;Richardson JS;Terwilliger TC;Zwart PH
通讯作者:
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