2dm6

Crystal structure of anti-configuration of indomethacin and leukotriene B4 12-hydroxydehydrogenase/15-oxo-prostaglandin 13-reductase complex

spinqualitylabelsall models 2dm6, resolution 2.00Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 2dm6 is a 2 chain structure with sequence from Cavia porcellus. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Ligands: IMN, NAP, TAM Related: 1v3v, 1v3t, 1v3u Resources: FirstGlance, OCA, RCSB, PDBsum, TOPSAN Function [LTB4D_CAVPO] Functions as 15-oxo-prostaglandin 13-reductase and acts on 15-oxo-PGE1, 15-oxo-PGE2 and 15-oxo-PGE2-alpha. Catalyzes the conversion of leukotriene B4 into its biologically less active metabolite, 12-oxo-leukotriene B4. This is an initial and key step of metabolic inactivation of leukotriene B4. Evolutionary Conservation Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf. Publication Abstract from PubMed The crystal structure of the ternary complex of leukotriene B4 12-hydroxydehydrogenase/15-oxo-prostaglandin (15-oxo-PG) 13-reductase (LTB4 12HD/PGR), an essential enzyme for eicosanoid inactivation pathways, with indomethacin and NADP+ has been solved. An indomethacin molecule bound in the anti-configuration at one of the two active site clefts of the homo-dimer interface in the LTB4 12HD/PGR and was confirmed by a binding calorimetry. The chlorobenzene ring is buried in the hydrophobic pore used as a binding site by the omega-chain of 15-oxo-PGE2. The carboxyl group interacts with the guanidino group of Arg56 and the phenolic hydroxyl group of Tyr262. Indomethacin shows a broad spectrum of efficacy against lipid-mediator related proteins including cyclooxygenase-2, phospholipase A2, PGF synthase and PGE synthase-2 but in the syn-configuration as well as LTB4 12HD/PGR in the anti-configuration. Indomethacin does not necessarily mimic the binding mode of the lipid-mediator substrates in the active sites of these complex structures. Thus, the broad spectrum of indomethacin efficacy can be attributed to its ability to adopt a range of different stable conformations. This allows the indomethacin to adapt to the distinct binding site features of each protein whilst maintaining favorable interactions between the carboxyl group and a counter charged functional group. Crystal structure of anti-configuration of indomethacin and leukotriene B4 12-hydroxydehydrogenase/15-oxo-prostaglandin 13-reductase complex reveals the structural basis of broad spectrum indomethacin efficacy.,Hori T, Ishijima J, Yokomizo T, Ago H, Shimizu T, Miyano M J Biochem. 2006 Sep;140(3):457-66. Epub 2006 Aug 17. PMID:16916844 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also Leukotriene B4 hydroxydehydrogenase

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