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Luying Xun on Muck Rack

Luying Xun

As seen in: Nature
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Articles

A labile sulfur ligand in a three-cysteine-coordinated [2Fe−2S] cluster mediates sulfide sensing in NreB

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By Chao Tang, Jingyao Qu, Lu Yu, Honglei Liu, Huaiwei Liu, Luying Xun, Yongzhen Xia, Yuemeng Shen
| Nature Verified
Abstract Iron-sulfur clusters are versatile protein cofactors involved in diverse biological processes, but their role in hydrogen sulfide/hydrosulfide (H2S/HS-) sensing remains largely unexplored. Here, we report that the Bacillus licheniformis sensor kinase NreB contains an unusual [2Fe-2S] cluster within its PAS domain. A 1.52-Å crystal structure reveals a distinct coordination geometry where three conserved cysteine residues and a non-cysteinyl sulfur ligand stabilize the cluster.
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A sulfide-sensor and a sulfane sulfur-sensor collectively regulate sulfur-oxidation for feather degradation by Bacillus licheniformis - Communications Biology

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By Huaiwei Liu, Luying Xun
| Nature Verified
Abstract Bacillus licheniformis MW3 degrades bird feathers. Feather keratin is rich in cysteine, which is metabolized to produce hazardous sulfide and sulfane sulfur. A challenge to B. licheniformis MW3 growing on feathers is to detoxify them. Here we identified a gene cluster in B. licheniformis MW3 to deal with these toxicity.
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