View source for 8fn1


==CryoEM structure of Go-coupled NTSR1==
<StructureSection load='8fn1' size='340' side='right'caption='[[8fn1]], [[Resolution|resolution]] 2.88&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[8fn1]] is a 6 chain structure with sequence from [https://en.wikipedia.org/wiki/Escherichia_coli Escherichia coli], [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens], [https://en.wikipedia.org/wiki/Rattus_norvegicus Rattus norvegicus] and [https://en.wikipedia.org/wiki/Spodoptera_frugiperda Spodoptera frugiperda]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=8FN1 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=8FN1 FirstGlance]. <br>
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">Electron Microscopy, [[Resolution|Resolution]] 2.88&#8491;</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=8fn1 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=8fn1 OCA], [https://pdbe.org/8fn1 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=8fn1 RCSB], [https://www.ebi.ac.uk/pdbsum/8fn1 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=8fn1 ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/NEUT_RAT NEUT_RAT] Neurotensin may play an endocrine or paracrine role in the regulation of fat metabolism. It causes contraction of smooth muscle.
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
The NTSR1 neurotensin receptor (NTSR1) is a G protein-coupled receptor (GPCR) found in the brain and peripheral tissues with neurotensin (NTS) being its endogenous peptide ligand. In the brain, NTS modulates dopamine neuronal activity, induces opioid-independent analgesia, and regulates food intake. Recent studies indicate that biasing NTSR1 toward beta-arrestin signaling can attenuate the actions of psychostimulants and other drugs of abuse. Here, we provide the cryoEM structures of NTSR1 ternary complexes with heterotrimeric Gq and GoA with and without the brain-penetrant small-molecule SBI-553. In functional studies, we discovered that SBI-553 displays complex allosteric actions exemplified by negative allosteric modulation for G proteins that are Galpha subunit selective and positive allosteric modulation and agonism for beta-arrestin translocation at NTSR1. Detailed structural analysis of the allosteric binding site illuminated the structural determinants for biased allosteric modulation of SBI-553 on NTSR1.

Neurotensin Receptor Allosterism Revealed in Complex with a Biased Allosteric Modulator.,Krumm BE, DiBerto JF, Olsen RHJ, Kang HJ, Slocum ST, Zhang S, Strachan RT, Huang XP, Slosky LM, Pinkerton AB, Barak LS, Caron MG, Kenakin T, Fay JF, Roth BL Biochemistry. 2023 Apr 4;62(7):1233-1248. doi: 10.1021/acs.biochem.3c00029. Epub , 2023 Mar 14. PMID:36917754<ref>PMID:36917754</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 8fn1" style="background-color:#fffaf0;"></div>

==See Also==
*[[Neurotensin receptor|Neurotensin receptor]]
*[[Transducin 3D structures|Transducin 3D structures]]
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Escherichia coli]]
[[Category: Homo sapiens]]
[[Category: Large Structures]]
[[Category: Rattus norvegicus]]
[[Category: Spodoptera frugiperda]]
[[Category: DiBerto JF]]
[[Category: Fay JF]]
[[Category: Kang H]]
[[Category: Krumm BE]]
[[Category: Olsen RHJ]]
[[Category: Roth BL]]
[[Category: Slocum ST]]
[[Category: Strachan RT]]
[[Category: Zhang S]]