1r1k
From Proteopedia
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|PDB= 1r1k |SIZE=350|CAPTION= <scene name='initialview01'>1r1k</scene>, resolution 2.90Å | |PDB= 1r1k |SIZE=350|CAPTION= <scene name='initialview01'>1r1k</scene>, resolution 2.90Å | ||
|SITE= | |SITE= | ||
| - | |LIGAND= <scene name='pdbligand= | + | |LIGAND= <scene name='pdbligand=EPH:L-ALPHA-PHOSPHATIDYL-BETA-OLEOYL-GAMMA-PALMITOYL-PHOSPHATIDYLETHANOLAMINE'>EPH</scene>, <scene name='pdbligand=P1A:2,3,14,20,22-PENTAHYDROXYCHOLEST-7-EN-6-ONE'>P1A</scene> |
|ACTIVITY= | |ACTIVITY= | ||
|GENE= ECR OR NR1H1 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=7102 Heliothis virescens]) | |GENE= ECR OR NR1H1 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=7102 Heliothis virescens]) | ||
| + | |DOMAIN= | ||
| + | |RELATEDENTRY=[[1r20|1R20]] | ||
| + | |RESOURCES=<span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1r1k FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1r1k OCA], [http://www.ebi.ac.uk/pdbsum/1r1k PDBsum], [http://www.rcsb.org/pdb/explore.do?structureId=1r1k RCSB]</span> | ||
}} | }} | ||
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[[Category: Rochel, N.]] | [[Category: Rochel, N.]] | ||
[[Category: SPINE, Structural Proteomics in Europe.]] | [[Category: SPINE, Structural Proteomics in Europe.]] | ||
| - | [[Category: EPH]] | ||
| - | [[Category: P1A]] | ||
[[Category: alpha-helical sandwich]] | [[Category: alpha-helical sandwich]] | ||
[[Category: heterodimer]] | [[Category: heterodimer]] | ||
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[[Category: transcription regulation]] | [[Category: transcription regulation]] | ||
| - | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on | + | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun Mar 30 23:21:55 2008'' |
Revision as of 20:21, 30 March 2008
| |||||||
| , resolution 2.90Å | |||||||
|---|---|---|---|---|---|---|---|
| Ligands: | , | ||||||
| Gene: | ECR OR NR1H1 (Heliothis virescens) | ||||||
| Related: | 1R20
| ||||||
| Resources: | FirstGlance, OCA, PDBsum, RCSB | ||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||
Crystal structure of the ligand-binding domains of the heterodimer EcR/USP bound to ponasterone A
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
1R1K 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 30 23:21:55 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. | Alpha-helical sandwich | Heterodimer | Nuclear receptor | Spine | Structural genomic | Structural proteomics in europe | Transcription regulation
