2i4z
From Proteopedia
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|PDB= 2i4z |SIZE=350|CAPTION= <scene name='initialview01'>2i4z</scene>, resolution 2.250Å | |PDB= 2i4z |SIZE=350|CAPTION= <scene name='initialview01'>2i4z</scene>, resolution 2.250Å | ||
|SITE= | |SITE= | ||
| - | |LIGAND= <scene name='pdbligand=DRH:(2S)-2-(4-{2-[1,3-BENZOXAZOL-2-YL(HEPTYL)AMINO]ETHYL}PHENOXY)-2-METHYLBUTANOIC ACID'>DRH</scene> | + | |LIGAND= <scene name='pdbligand=DRH:(2S)-2-(4-{2-[1,3-BENZOXAZOL-2-YL(HEPTYL)AMINO]ETHYL}PHENOXY)-2-METHYLBUTANOIC+ACID'>DRH</scene> |
|ACTIVITY= | |ACTIVITY= | ||
|GENE= PPARG, NR1C3 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 Homo sapiens]) | |GENE= PPARG, NR1C3 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 Homo sapiens]) | ||
| + | |DOMAIN= | ||
| + | |RELATEDENTRY=[[1prg|1PRG]], [[2prg|2PRG]], [[4prg|4PRG]], [[2i4j|2I4J]] | ||
| + | |RESOURCES=<span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2i4z FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2i4z OCA], [http://www.ebi.ac.uk/pdbsum/2i4z PDBsum], [http://www.rcsb.org/pdb/explore.do?structureId=2i4z RCSB]</span> | ||
}} | }} | ||
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==Overview== | ==Overview== | ||
The peroxisome proliferator-activated receptors (PPARs) are transcriptional regulators of glucose and lipid metabolism. They are activated by natural ligands, such as fatty acids, and are also targets of synthetic antidiabetic and hypolipidemic drugs. By using cell-based reporter assays, we studied the transactivation activity of two enantiomeric ureidofibrate-like derivatives. In particular, we show that the R-enantiomer, (R)-1, is a full agonist of PPARgamma, whereas the S-enantiomer, (S)-1, is a less potent partial agonist. Most importantly, we report the x-ray crystal structures of the PPARgamma ligand binding domain complexed with the R- and the S-enantiomer, respectively. The analysis of the two crystal structures shows that the different degree of stabilization of the helix 12 induced by the ligand determines its behavior as full or partial agonist. Another crystal structure of the PPARgamma.(S)-1 complex, only differing in the soaking time of the ligand, is also presented. The comparison of the two structures of the complexes with the partial agonist reveals significant differences and is suggestive of the possible coexistence in solution of transcriptionally active and inactive forms of helix 12 in the presence of a partial agonist. Mutation analysis confirms the importance of Leu(465), Leu(469), and Ile(472) in the activation by (R)-1 and underscores the key role of Gln(286) in the PPARgamma activity. | The peroxisome proliferator-activated receptors (PPARs) are transcriptional regulators of glucose and lipid metabolism. They are activated by natural ligands, such as fatty acids, and are also targets of synthetic antidiabetic and hypolipidemic drugs. By using cell-based reporter assays, we studied the transactivation activity of two enantiomeric ureidofibrate-like derivatives. In particular, we show that the R-enantiomer, (R)-1, is a full agonist of PPARgamma, whereas the S-enantiomer, (S)-1, is a less potent partial agonist. Most importantly, we report the x-ray crystal structures of the PPARgamma ligand binding domain complexed with the R- and the S-enantiomer, respectively. The analysis of the two crystal structures shows that the different degree of stabilization of the helix 12 induced by the ligand determines its behavior as full or partial agonist. Another crystal structure of the PPARgamma.(S)-1 complex, only differing in the soaking time of the ligand, is also presented. The comparison of the two structures of the complexes with the partial agonist reveals significant differences and is suggestive of the possible coexistence in solution of transcriptionally active and inactive forms of helix 12 in the presence of a partial agonist. Mutation analysis confirms the importance of Leu(465), Leu(469), and Ile(472) in the activation by (R)-1 and underscores the key role of Gln(286) in the PPARgamma activity. | ||
| - | |||
| - | ==Disease== | ||
| - | Known diseases associated with this structure: Abdominal body fat distribution, modifier of OMIM:[[http://www.ncbi.nlm.nih.gov/entrez/dispomim.cgi?id=601487 601487]], Diabetes mellitus, insulin-resistant, with acanthosis nigricans and hypertension OMIM:[[http://www.ncbi.nlm.nih.gov/entrez/dispomim.cgi?id=601487 601487]], Glioblastoma, susceptibility to OMIM:[[http://www.ncbi.nlm.nih.gov/entrez/dispomim.cgi?id=601487 601487]], Insulin resistance, severe, digenic OMIM:[[http://www.ncbi.nlm.nih.gov/entrez/dispomim.cgi?id=601487 601487]], Lipodystrophy, familial partial OMIM:[[http://www.ncbi.nlm.nih.gov/entrez/dispomim.cgi?id=601487 601487]], Obesity, resistance to OMIM:[[http://www.ncbi.nlm.nih.gov/entrez/dispomim.cgi?id=601487 601487]], Obesity, severe OMIM:[[http://www.ncbi.nlm.nih.gov/entrez/dispomim.cgi?id=601487 601487]] | ||
==About this Structure== | ==About this Structure== | ||
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[[Category: Mazza, F.]] | [[Category: Mazza, F.]] | ||
[[Category: Pochetti, G.]] | [[Category: Pochetti, G.]] | ||
| - | [[Category: DRH]] | ||
[[Category: bundle of alpha-helices and a small four-stranded beta-sheet]] | [[Category: bundle of alpha-helices and a small four-stranded beta-sheet]] | ||
| - | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on | + | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Mar 31 03:39:44 2008'' |
Revision as of 00:39, 31 March 2008
| |||||||
| , resolution 2.250Å | |||||||
|---|---|---|---|---|---|---|---|
| Ligands: | |||||||
| Gene: | PPARG, NR1C3 (Homo sapiens) | ||||||
| Related: | 1PRG, 2PRG, 4PRG, 2I4J
| ||||||
| Resources: | FirstGlance, OCA, PDBsum, RCSB | ||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||
Crystal structure of the complex between PPARgamma and the partial agonist LT127 (ureidofibrate derivative). This structure has been obtained from crystals soaked for 6 hours.
Overview
The peroxisome proliferator-activated receptors (PPARs) are transcriptional regulators of glucose and lipid metabolism. They are activated by natural ligands, such as fatty acids, and are also targets of synthetic antidiabetic and hypolipidemic drugs. By using cell-based reporter assays, we studied the transactivation activity of two enantiomeric ureidofibrate-like derivatives. In particular, we show that the R-enantiomer, (R)-1, is a full agonist of PPARgamma, whereas the S-enantiomer, (S)-1, is a less potent partial agonist. Most importantly, we report the x-ray crystal structures of the PPARgamma ligand binding domain complexed with the R- and the S-enantiomer, respectively. The analysis of the two crystal structures shows that the different degree of stabilization of the helix 12 induced by the ligand determines its behavior as full or partial agonist. Another crystal structure of the PPARgamma.(S)-1 complex, only differing in the soaking time of the ligand, is also presented. The comparison of the two structures of the complexes with the partial agonist reveals significant differences and is suggestive of the possible coexistence in solution of transcriptionally active and inactive forms of helix 12 in the presence of a partial agonist. Mutation analysis confirms the importance of Leu(465), Leu(469), and Ile(472) in the activation by (R)-1 and underscores the key role of Gln(286) in the PPARgamma activity.
About this Structure
2I4Z is a Single protein structure of sequence from Homo sapiens. Full crystallographic information is available from OCA.
Reference
Insights into the mechanism of partial agonism: crystal structures of the peroxisome proliferator-activated receptor gamma ligand-binding domain in the complex with two enantiomeric ligands., Pochetti G, Godio C, Mitro N, Caruso D, Galmozzi A, Scurati S, Loiodice F, Fracchiolla G, Tortorella P, Laghezza A, Lavecchia A, Novellino E, Mazza F, Crestani M, J Biol Chem. 2007 Jun 8;282(23):17314-24. Epub 2007 Apr 2. PMID:17403688
Page seeded by OCA on Mon Mar 31 03:39:44 2008
