ArticleProceedings of the National Academy of Sciences of the United States of America2025
Structural basis and evolutionary pathways of glycerol-1-phosphate transport in marine bacteria.
Article in Proceedings of the National Academy of Sciences of the United States of America, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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12 authors.
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Abstract
All cells use lipid membranes to maintain cellular integrity and function, though Archaea utilize lipids composed of glycerol-1-phosphate (G1P), while Bacteria and Eukaryotes use glycerol-3-phosphate (G3P). Given that Archaea contribute significantly to global marine biomass, accounting for 0.3 gigatonnes (Gt) of carbon in the oceans, we aimed to uncover how archaeal G1P is recycled by marine microorganisms. Through a multidisciplinary approach combining microbiology, biochemistry, and structural biology, we identified a G1P transporter in marine bacteria, which we named GpxB. Phylogenetic analysis revealed that GpxB belongs to the organic phosphonate transporter (PhnT) family and is widely distributed in the marine microbiome, found in approximately 5 to 10% of microbial cells in surface marine waters. Strikingly, we also identified a second G1P transporter, UgpB, that is known to transport G3P and belongs to the carbohydrate uptake transporter-1 (CUT1) family, in the model bacterium
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