Structural Basis for Oxidized Glutathione Recognition by the Yeast Cadmium Factor 1.
Structural Basis for Oxidized Glutathione Recognition by the Yeast Cadmium Factor 1.
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酵母镉因子 1 识别氧化型谷胱甘肽的结构基础。
DOI:
10.1101/2024.01.31.578287
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发表时间:
2024
期刊:
影响因子:
--
通讯作者:
Tomasiak,ThomasM
中科院分区:
文献类型:
--
作者:
Soong,TikHang;Hotze,Clare;Khandelwal,NiteshKumar;Tomasiak,ThomasM
Transporters from the ABCC family have an essential role in detoxifying electrophilic compounds including metals, drugs, and lipids, often through conjugation with glutathione complexes. The Yeast Cadmium Factor 1 (Ycf1) transports glutathione alone as well as glutathione conjugated to toxic heavy metals including Cd2+, Hg2+, and As3+. To understand the complicated selectivity and promiscuity of heavy metal substrate binding, we determined the cryo-EM structure of Ycf1 bound to the substrate, oxidized glutathione. We systematically tested binding determinants with cellular survival assays against cadmium to determine how the substrate site accommodates different-sized metal complexes. We identify a “flex-pocket” for substrate binding that binds glutathione complexes asymmetrically and flexes to accommodate different size complexes.
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影响因子:
3.5
作者:
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DOI:
--
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期刊:
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