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1r20
From Proteopedia
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|PDB= 1r20 |SIZE=350|CAPTION= <scene name='initialview01'>1r20</scene>, resolution 3.0Å | |PDB= 1r20 |SIZE=350|CAPTION= <scene name='initialview01'>1r20</scene>, resolution 3.0Å | ||
|SITE= | |SITE= | ||
| - | |LIGAND= <scene name='pdbligand=HWG:N-(TERT-BUTYL)-3,5-DIMETHYL-N | + | |LIGAND= <scene name='pdbligand=HWG:N-(TERT-BUTYL)-3,5-DIMETHYL-N'-[(5-METHYL-2,3-DIHYDRO-1,4-BENZODIOXIN-6-YL)CARBONYL]BENZOHYDRAZIDE'>HWG</scene> and <scene name='pdbligand=EPH:L-ALPHA-PHOSPHATIDYL-BETA-OLEOYL-GAMMA-PALMITOYL-PHOSPHATIDYLETHANOLAMINE'>EPH</scene> |
|ACTIVITY= | |ACTIVITY= | ||
|GENE= | |GENE= | ||
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[[Category: structural proteomics in europe]] | [[Category: structural proteomics in europe]] | ||
| - | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on | + | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun Mar 23 13:25:14 2008'' |
Revision as of 11:25, 23 March 2008
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| Coordinates: | save as pdb, mmCIF, xml | ||||||
Crystal structure of the ligand-binding domains of the heterodimer EcR/USP bound to the synthetic agonist BYI06830
Overview
The ecdysteroid hormones coordinate the major stages of insect development, notably moulting and metamorphosis, by binding to the ecdysone receptor (EcR); a ligand-inducible nuclear transcription factor. To bind either ligand or DNA, EcR must form a heterodimer with ultraspiracle (USP), the homologue of retinoid-X receptor. Here we report the crystal structures of the ligand-binding domains of the moth Heliothis virescens EcR-USP heterodimer in complex with the ecdysteroid ponasterone A and with a non-steroidal, lepidopteran-specific agonist BYI06830 used in agrochemical pest control. The two structures of EcR-USP emphasize the universality of heterodimerization as a general mechanism common to both vertebrates and invertebrates. Comparison of the EcR structures in complex with steroidal and non-steroidal ligands reveals radically different and only partially overlapping ligand-binding pockets that could not be predicted by molecular modelling and docking studies. These findings offer new perspectives for the design of insect-specific, environmentally safe insecticides. The concept of a ligand-dependent binding pocket in EcR provides an insight into the moulding of nuclear receptors to their ligand, and has potential applications for human nuclear receptors.
About this Structure
1R20 is a Protein complex structure of sequences from Heliothis virescens. Full crystallographic information is available from OCA.
Reference
Structural adaptability in the ligand-binding pocket of the ecdysone hormone receptor., Billas IM, Iwema T, Garnier JM, Mitschler A, Rochel N, Moras D, Nature. 2003 Nov 6;426(6962):91-6. Epub 2003 Nov 2. PMID:14595375
Page seeded by OCA on Sun Mar 23 13:25:14 2008
Categories: Heliothis virescens | Protein complex | Billas, I M.L. | Garnier, J M. | Iwema, T. | Mitschler, A. | Moras, D. | Rochel, N. | SPINE, Structural Proteomics in Europe. | EPH | HWG | Alpha-helical sandwich | Heterodimer | Nuclear receptor | Spine | Structural genomic | Structural proteomics in europe
