4gs9

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{{STRUCTURE_4gs9| PDB=4gs9 | SCENE= }}
 
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===Crystal structure of the high affinity heterodimer of HIF2 alpha and ARNT C-terminal PAS domains in complex with an inactive benzoxadiazole antagonist===
 
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{{ABSTRACT_PUBMED_23363003}}
 
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==Disease==
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==Crystal structure of the high affinity heterodimer of HIF2 alpha and ARNT C-terminal PAS domains in complex with an inactive benzoxadiazole antagonist==
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[[http://www.uniprot.org/uniprot/EPAS1_HUMAN EPAS1_HUMAN]] Defects in EPAS1 are the cause of familial erythrocytosis type 4 (ECYT4) [MIM:[http://omim.org/entry/611783 611783]]. ECYT4 is an autosomal dominant disorder characterized by increased serum red blood cell mass, elevated hemoglobin concentration and hematocrit, and normal platelet and leukocyte counts.<ref>PMID:19208626</ref> <ref>PMID:18378852</ref> <ref>PMID:18184961</ref> <ref>PMID:22367913</ref>
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<StructureSection load='4gs9' size='340' side='right'caption='[[4gs9]], [[Resolution|resolution]] 1.72&Aring;' scene=''>
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== Structural highlights ==
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<table><tr><td colspan='2'>[[4gs9]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4GS9 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4GS9 FirstGlance]. <br>
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</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.72&#8491;</td></tr>
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<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=0XB:N-(3-FLUOROPHENYL)-4-NITRO-2,1,3-BENZOXADIAZOL-5-AMINE'>0XB</scene>, <scene name='pdbligand=PE8:3,6,9,12,15,18,21-HEPTAOXATRICOSANE-1,23-DIOL'>PE8</scene></td></tr>
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<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=4gs9 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4gs9 OCA], [https://pdbe.org/4gs9 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4gs9 RCSB], [https://www.ebi.ac.uk/pdbsum/4gs9 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4gs9 ProSAT]</span></td></tr>
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</table>
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== Disease ==
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[https://www.uniprot.org/uniprot/EPAS1_HUMAN EPAS1_HUMAN] Defects in EPAS1 are the cause of familial erythrocytosis type 4 (ECYT4) [MIM:[https://omim.org/entry/611783 611783]. ECYT4 is an autosomal dominant disorder characterized by increased serum red blood cell mass, elevated hemoglobin concentration and hematocrit, and normal platelet and leukocyte counts.<ref>PMID:19208626</ref> <ref>PMID:18378852</ref> <ref>PMID:18184961</ref> <ref>PMID:22367913</ref>
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== Function ==
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[https://www.uniprot.org/uniprot/EPAS1_HUMAN EPAS1_HUMAN] Transcription factor involved in the induction of oxygen regulated genes. Binds to core DNA sequence 5'-[AG]CGTG-3' within the hypoxia response element (HRE) of target gene promoters. Regulates the vascular endothelial growth factor (VEGF) expression and seems to be implicated in the development of blood vessels and the tubular system of lung. May also play a role in the formation of the endothelium that gives rise to the blood brain barrier. Potent activator of the Tie-2 tyrosine kinase expression. Activation seems to require recruitment of transcriptional coactivators such as CREBPB and probably EP300. Interaction with redox regulatory protein APEX seems to activate CTAD.
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==Function==
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==See Also==
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[[http://www.uniprot.org/uniprot/EPAS1_HUMAN EPAS1_HUMAN]] Transcription factor involved in the induction of oxygen regulated genes. Binds to core DNA sequence 5'-[AG]CGTG-3' within the hypoxia response element (HRE) of target gene promoters. Regulates the vascular endothelial growth factor (VEGF) expression and seems to be implicated in the development of blood vessels and the tubular system of lung. May also play a role in the formation of the endothelium that gives rise to the blood brain barrier. Potent activator of the Tie-2 tyrosine kinase expression. Activation seems to require recruitment of transcriptional coactivators such as CREBPB and probably EP300. Interaction with redox regulatory protein APEX seems to activate CTAD. [[http://www.uniprot.org/uniprot/ARNT_HUMAN ARNT_HUMAN]] 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.
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*[[3D structures of hypoxia-inducible factor|3D structures of hypoxia-inducible factor]]
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== References ==
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==About this Structure==
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<references/>
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[[4gs9]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4GS9 OCA].
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__TOC__
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</StructureSection>
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==Reference==
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<references group="xtra"/><references/>
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[[Category: Homo sapiens]]
[[Category: Homo sapiens]]
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[[Category: Gardner, K H.]]
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[[Category: Large Structures]]
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[[Category: Scheuermann, T H.]]
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[[Category: Gardner KH]]
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[[Category: Nucleus]]
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[[Category: Scheuermann TH]]
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[[Category: Pas fold]]
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[[Category: Protein-protein interaction]]
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[[Category: Transcription]]
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Current revision

Crystal structure of the high affinity heterodimer of HIF2 alpha and ARNT C-terminal PAS domains in complex with an inactive benzoxadiazole antagonist

PDB ID 4gs9

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