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2dm6

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{{STRUCTURE_2dm6| PDB=2dm6 | SCENE= }}
{{STRUCTURE_2dm6| PDB=2dm6 | SCENE= }}
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'''Crystal structure of anti-configuration of indomethacin and leukotriene B4 12-hydroxydehydrogenase/15-oxo-prostaglandin 13-reductase complex'''
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===Crystal structure of anti-configuration of indomethacin and leukotriene B4 12-hydroxydehydrogenase/15-oxo-prostaglandin 13-reductase complex===
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==Overview==
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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.
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(as it appears on PubMed at http://www.pubmed.gov), where 16916844 is the PubMed ID number.
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{{ABSTRACT_PUBMED_16916844}}
==About this Structure==
==About this Structure==
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[[Category: Rsgi]]
[[Category: Rsgi]]
[[Category: Structural genomic]]
[[Category: Structural genomic]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Jul 28 08:31:56 2008''

Revision as of 05:31, 28 July 2008

Image:2dm6.png

Template:STRUCTURE 2dm6

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

Template:ABSTRACT PUBMED 16916844

About this Structure

2DM6 is a Single protein structure of sequence from Cavia porcellus. Full crystallographic information is available from OCA.

Reference

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

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