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==Structure of human beta1 adrenergic receptor bound to carazolol== | ==Structure of human beta1 adrenergic receptor bound to carazolol== | ||
<StructureSection load='7bvq' size='340' side='right'caption='[[7bvq]]' scene=''> | <StructureSection load='7bvq' size='340' side='right'caption='[[7bvq]], [[Resolution|resolution]] 2.50Å' scene=''> | ||
== Structural highlights == | == Structural highlights == | ||
<table><tr><td colspan='2'>Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=7BVQ OCA]. For a <b>guided tour on the structure components</b> use [ | <table><tr><td colspan='2'>[[7bvq]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Bpt4 Bpt4]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=7BVQ OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=7BVQ FirstGlance]. <br> | ||
</td></tr><tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[ | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=1WV:(2S)-2,3-DIHYDROXYPROPYL+(7Z)-TETRADEC-7-ENOATE'>1WV</scene>, <scene name='pdbligand=CAU:(2S)-1-(9H-CARBAZOL-4-YLOXY)-3-(ISOPROPYLAMINO)PROPAN-2-OL'>CAU</scene>, <scene name='pdbligand=CIT:CITRIC+ACID'>CIT</scene>, <scene name='pdbligand=CLR:CHOLESTEROL'>CLR</scene>, <scene name='pdbligand=GLC:ALPHA-D-GLUCOSE'>GLC</scene>, <scene name='pdbligand=NA:SODIUM+ION'>NA</scene>, <scene name='pdbligand=PG4:TETRAETHYLENE+GLYCOL'>PG4</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene></td></tr> | ||
<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">e, T4Tp126 ([https://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=10665 BPT4])</td></tr> | |||
<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[https://en.wikipedia.org/wiki/Lysozyme Lysozyme], with EC number [https://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.2.1.17 3.2.1.17] </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=7bvq FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=7bvq OCA], [https://pdbe.org/7bvq PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=7bvq RCSB], [https://www.ebi.ac.uk/pdbsum/7bvq PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=7bvq ProSAT]</span></td></tr> | |||
</table> | </table> | ||
<div style="background-color:#fffaf0;"> | |||
== Publication Abstract from PubMed == | |||
Beta adrenergic receptors (betaARs) mediate physiologic responses to the catecholamines epinephrine and norepinephrine released by the sympathetic nervous system. While the hormone epinephrine binds beta1AR and beta2AR with similar affinity, the smaller neurotransmitter norepinephrine is approximately tenfold selective for the beta1AR. To understand the structural basis for this physiologically important selectivity, we solved the crystal structures of the human beta1AR bound to an antagonist carazolol and different agonists including norepinephrine, epinephrine and BI-167107. Structural comparison revealed that the catecholamine-binding pockets are identical between beta1AR and beta2AR, but the extracellular vestibules have different shapes and electrostatic properties. Metadynamics simulations and mutagenesis studies revealed that these differences influence the path norepinephrine takes to the orthosteric pocket and contribute to the different association rates and thus different affinities. | |||
Binding pathway determines norepinephrine selectivity for the human beta1AR over beta2AR.,Xu X, Kaindl J, Clark MJ, Hubner H, Hirata K, Sunahara RK, Gmeiner P, Kobilka BK, Liu X Cell Res. 2020 Oct 22. pii: 10.1038/s41422-020-00424-2. doi:, 10.1038/s41422-020-00424-2. PMID:33093660<ref>PMID:33093660</ref> | |||
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |||
</div> | |||
<div class="pdbe-citations 7bvq" style="background-color:#fffaf0;"></div> | |||
== References == | |||
<references/> | |||
__TOC__ | __TOC__ | ||
</StructureSection> | </StructureSection> | ||
[[Category: Bpt4]] | |||
[[Category: Large Structures]] | [[Category: Large Structures]] | ||
[[Category: Clark M]] | [[Category: Lysozyme]] | ||
[[Category: Gmeiner P]] | [[Category: Clark, M]] | ||
[[Category: Hirata K]] | [[Category: Gmeiner, P]] | ||
[[Category: Hubner H]] | [[Category: Hirata, K]] | ||
[[Category: Kaindl J]] | [[Category: Hubner, H]] | ||
[[Category: Kobilka | [[Category: Kaindl, J]] | ||
[[Category: Liu X]] | [[Category: Kobilka, B K]] | ||
[[Category: Sunahara R]] | [[Category: Liu, X]] | ||
[[Category: Xu X]] | [[Category: Sunahara, R]] | ||
[[Category: Xu, X]] | |||
[[Category: G protein coupled receptor]] | |||
[[Category: Membrane protein]] | |||
[[Category: Signaling protein]] | |||
Revision as of 12:38, 12 May 2021
Structure of human beta1 adrenergic receptor bound to carazololStructure of human beta1 adrenergic receptor bound to carazolol
Structural highlights
Publication Abstract from PubMedBeta adrenergic receptors (betaARs) mediate physiologic responses to the catecholamines epinephrine and norepinephrine released by the sympathetic nervous system. While the hormone epinephrine binds beta1AR and beta2AR with similar affinity, the smaller neurotransmitter norepinephrine is approximately tenfold selective for the beta1AR. To understand the structural basis for this physiologically important selectivity, we solved the crystal structures of the human beta1AR bound to an antagonist carazolol and different agonists including norepinephrine, epinephrine and BI-167107. Structural comparison revealed that the catecholamine-binding pockets are identical between beta1AR and beta2AR, but the extracellular vestibules have different shapes and electrostatic properties. Metadynamics simulations and mutagenesis studies revealed that these differences influence the path norepinephrine takes to the orthosteric pocket and contribute to the different association rates and thus different affinities. Binding pathway determines norepinephrine selectivity for the human beta1AR over beta2AR.,Xu X, Kaindl J, Clark MJ, Hubner H, Hirata K, Sunahara RK, Gmeiner P, Kobilka BK, Liu X Cell Res. 2020 Oct 22. pii: 10.1038/s41422-020-00424-2. doi:, 10.1038/s41422-020-00424-2. PMID:33093660[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. References
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