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• W3129968667 abstract "Phosphatidylglycerol is a crucial phospholipid found ubiquitously in biological membranes of prokaryotic and eukaryotic cells. The phosphatidylglycerol phosphate (PGP) synthase (PgsA), a membrane-embedded enzyme, catalyzes the primary reaction of phosphatidylglycerol biosynthesis. Mutations in pgsA frequently correlate with daptomycin resistance in Staphylococcus aureus and other prevalent infectious pathogens. Here we report the structures of S. aureus PgsA ( Sa PgsA) captured at two distinct states of the catalytic process, with lipid substrate (cytidine diphosphate-diacylglycerol, CDP-DAG) or product (PGP) bound to the active site. The hydrophilic head groups of CDP-DAG and PGP occupy two different pockets in the active-site cavity, inducing local conformational changes. An elongated membrane-exposed surface groove accommodates the fatty acyl chains of CDP-DAG/PGP and opens a lateral portal for lipid entry/release. Remarkably, the daptomycin resistance-related mutations mostly cluster around the active site, causing reduction of enzymatic activity. The results provide unprecedented insights into the dynamic catalytic process of PgsA and inspiring frameworks for development of antimicrobial agents targeting PgsA from pathogenic bacteria." @default.
• W3129968667 created "2021-03-01" @default.
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• W3129968667 date "2021-02-22" @default.
• W3129968667 modified "2023-09-23" @default.
• W3129968667 title "Structural mechanism of phosphatidylglycerol phosphate biosynthesis at the membrane-cytosol interface" @default.
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• W3129968667 doi "https://doi.org/10.17632/3d6w948vf5.1" @default.
• W3129968667 hasPublicationYear "2021" @default.
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