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==Crystal Structure of the Heterodimeric HIF-1a:ARNT Complex with HRE DNA==
==Crystal Structure of the Heterodimeric HIF-1a:ARNT Complex with HRE DNA==
<StructureSection load='4zpr' size='340' side='right' caption='[[4zpr]], [[Resolution|resolution]] 3.90&Aring;' scene=''>
<StructureSection load='4zpr' size='340' side='right'caption='[[4zpr]], [[Resolution|resolution]] 3.90&Aring;' scene=''>
== Structural highlights ==
== Structural highlights ==
<table><tr><td colspan='2'>[[4zpr]] is a 4 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4ZPR OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4ZPR FirstGlance]. <br>
<table><tr><td colspan='2'>[[4zpr]] is a 4 chain structure with sequence from [https://en.wikipedia.org/wiki/Mus_musculus Mus musculus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4ZPR OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4ZPR FirstGlance]. <br>
</td></tr><tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[4zp4|4zp4]], [[4zph|4zph]], [[4zpk|4zpk]]</td></tr>
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 3.902&#8491;</td></tr>
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4zpr FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4zpr OCA], [http://www.rcsb.org/pdb/explore.do?structureId=4zpr RCSB], [http://www.ebi.ac.uk/pdbsum/4zpr PDBsum]</span></td></tr>
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=4zpr FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4zpr OCA], [https://pdbe.org/4zpr PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4zpr RCSB], [https://www.ebi.ac.uk/pdbsum/4zpr PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4zpr ProSAT]</span></td></tr>
</table>
</table>
== Function ==
== Function ==
[[http://www.uniprot.org/uniprot/ARNT_MOUSE 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). [[http://www.uniprot.org/uniprot/HIF1A_MOUSE HIF1A_MOUSE]] Functions as a master transcriptional regulator of the adaptive response to hypoxia. Under hypoxic conditions, activates the transcription of over 40 genes, including erythropoietin, glucose transporters, glycolytic enzymes, vascular endothelial growth factor, HILPDA, and other genes whose protein products increase oxygen delivery or facilitate metabolic adaptation to hypoxia. Plays an essential role in embryonic vascularization, tumor angiogenesis and pathophysiology of ischemic disease. Binds to core DNA sequence 5'-[AG]CGTG-3' within the hypoxia response element (HRE) of target gene promoters. Activation requires recruitment of transcriptional coactivators such as CREBPB and EP300. Activity is enhanced by interaction with both, NCOA1 or NCOA2. Interaction with redox regulatory protein APEX seems to activate CTAD and potentiates activation by NCOA1 and CREBBP. Involved in the axonal distribution and transport of mitochondria in neurons during hypoxia (By similarity).  
[https://www.uniprot.org/uniprot/ARNT_MOUSE 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).
<div style="background-color:#fffaf0;">
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
== Publication Abstract from PubMed ==
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From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
</div>
<div class="pdbe-citations 4zpr" style="background-color:#fffaf0;"></div>
==See Also==
*[[3D structures of hypoxia-inducible factor|3D structures of hypoxia-inducible factor]]
== References ==
== References ==
<references/>
<references/>
__TOC__
__TOC__
</StructureSection>
</StructureSection>
[[Category: Kim, Y]]
[[Category: Large Structures]]
[[Category: Lu, J]]
[[Category: Mus musculus]]
[[Category: Potluri, N]]
[[Category: Kim Y]]
[[Category: Rastinejad, F]]
[[Category: Lu J]]
[[Category: Wu, D]]
[[Category: Potluri N]]
[[Category: Arnt]]
[[Category: Rastinejad F]]
[[Category: Bhlh-pa]]
[[Category: Wu D]]
[[Category: Hif-1a]]
[[Category: Hre]]
[[Category: Protein transport-transcription-dna complex]]

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