5xj9

Crystal structure of PlsY (YgiH), an integral membrane glycerol 3-phosphate acyltransferase - the orthophosphate form

spinqualitylabelsall models 5xj9, resolution 1.83Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 5xj9 is a 1 chain structure with sequence from Aquifex aeolicus VF5. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: X-ray diffraction, Resolution 1.83Å Ligands: 78M, FME, PO4 Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function PLSY_AQUAE Catalyzes the transfer of an acyl group from acyl-phosphate (acyl-PO(4)) to glycerol-3-phosphate (G3P) to form lysophosphatidic acid (LPA). This enzyme utilizes acyl-phosphate as fatty acyl donor, but not acyl-CoA or acyl-ACP. Publication Abstract from PubMed The membrane-integral glycerol 3-phosphate (G3P) acyltransferase PlsY catalyses the committed and essential step in bacterial phospholipid biosynthesis by acylation of G3P, forming lysophosphatidic acid. It contains no known acyltransferase motifs, lacks eukaryotic homologs, and uses the unusual acyl-phosphate as acyl donor, as opposed to acyl-CoA or acyl-carrier protein for other acyltransferases. Previous studies have identified several PlsY inhibitors as potential antimicrobials. Here we determine the crystal structure of PlsY at 1.48 A resolution, revealing a seven-transmembrane helix fold. Four additional substrate- and product-bound structures uncover the atomic details of its relatively inflexible active site. Structure and mutagenesis suggest a different acylation mechanism of 'substrate-assisted catalysis' that, unlike other acyltransferases, does not require a proteinaceous catalytic base to complete. The structure data and a high-throughput enzymatic assay developed in this work should prove useful for virtual and experimental screening of inhibitors against this vital bacterial enzyme. Structural insights into the committed step of bacterial phospholipid biosynthesis.,Li Z, Tang Y, Wu Y, Zhao S, Bao J, Luo Y, Li D Nat Commun. 2017 Nov 22;8(1):1691. doi: 10.1038/s41467-017-01821-9. PMID:29167463 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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