6e3u

Crystal Structure of the Heterodimeric HIF-2 Complex with Agonist M1001

spinqualitylabelsall models 6e3u, resolution 2.85Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 6e3u is a 2 chain structure with sequence from Mus musculus. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: X-ray diffraction, Resolution 2.85Å Ligands: HNJ Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function ARNT_MOUSE Required for activity of the Ah (dioxin) receptor. This protein is required for the ligand-binding subunit to translocate from the cytosol to the nucleus after ligand binding. The complex then initiates transcription of genes involved in the activation of PAH procarcinogens. The heterodimer with HIF1A or EPAS1/HIF2A functions as a transcriptional regulator of the adaptive response to hypoxia (By similarity). Publication Abstract from PubMed Hypoxia-inducible factor-2 (HIF-2) is a heterodimeric transcription factor formed through dimerization between an oxygen-sensitive HIF-2alpha subunit and its obligate partner subunit ARNT. Enhanced HIF-2 activity drives some cancers, whereas reduced activity causes anemia in chronic kidney disease. Therefore, modulation of HIF-2 activity via direct-binding ligands could provide many new therapeutic benefits. Here, we explored HIF-2alpha chemical ligands using combined crystallographic, biophysical, and cell-based functional studies. We found chemically unrelated antagonists to employ the same mechanism of action. Their binding displaced residue M252 from inside the HIF-2alpha PAS-B pocket toward the ARNT subunit to weaken heterodimerization. We also identified first-in-class HIF-2alpha agonists and found that they significantly displaced pocket residue Y281. Its dramatic side chain movement increases heterodimerization stability and transcriptional activity. Our findings show that despite binding to the same HIF-2alpha PAS-B pocket, ligands can manifest as inhibitors versus activators by mobilizing different pocket residues to allosterically alter HIF-2alpha-ARNT heterodimerization. Bidirectional modulation of HIF-2 activity through chemical ligands.,Wu D, Su X, Lu J, Li S, Hood BL, Vasile S, Potluri N, Diao X, Kim Y, Khorasanizadeh S, Rastinejad F Nat Chem Biol. 2019 Feb 25. pii: 10.1038/s41589-019-0234-5. doi:, 10.1038/s41589-019-0234-5. PMID:30804532 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also 3D structures of hypoxia-inducible factor

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