View source for 2ymd


==Crystal structure of a mutant binding protein (5HTBP-AChBP) in complex with serotonin (5-hydroxytryptamine)==
<StructureSection load='2ymd' size='340' side='right'caption='[[2ymd]], [[Resolution|resolution]] 1.96&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[2ymd]] is a 10 chain structure with sequence from [http://en.wikipedia.org/wiki/Aplca Aplca]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2YMD OCA]. For a <b>guided tour on the structure components</b> use [http://proteopedia.org/fgij/fg.htm?mol=2YMD FirstGlance]. <br>
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=GOL:GLYCEROL'>GOL</scene>, <scene name='pdbligand=PO4:PHOSPHATE+ION'>PO4</scene>, <scene name='pdbligand=SRO:SEROTONIN'>SRO</scene></td></tr>
<tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[2br7|2br7]], [[2br8|2br8]], [[2byn|2byn]], [[2byp|2byp]], [[2byq|2byq]], [[2byr|2byr]], [[2bys|2bys]], [[2c9t|2c9t]], [[2uz6|2uz6]], [[2w8f|2w8f]], [[2w8g|2w8g]], [[2wn9|2wn9]], [[2wnc|2wnc]], [[2wnj|2wnj]], [[2wnl|2wnl]], [[2wzy|2wzy]], [[2x00|2x00]], [[2xnt|2xnt]], [[2xnu|2xnu]], [[2xnv|2xnv]], [[2xys|2xys]], [[2xyt|2xyt]], [[2xz5|2xz5]], [[2xz6|2xz6]], [[2y54|2y54]], [[2y56|2y56]], [[2y57|2y57]], [[2y58|2y58]], [[2y7y|2y7y]], [[4afo|4afo]], [[4aft|4aft]], [[4afw|4afw]], [[2yme|2yme]]</td></tr>
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://proteopedia.org/fgij/fg.htm?mol=2ymd FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2ymd OCA], [http://pdbe.org/2ymd PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=2ymd RCSB], [http://www.ebi.ac.uk/pdbsum/2ymd PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=2ymd ProSAT]</span></td></tr>
</table>
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
The 5-HT3 receptor is a pentameric serotonin-gated ion channel, which mediates rapid excitatory neurotransmission and is the target of a therapeutically important class of anti-emetic drugs, such as granisetron. We report crystal structures of a binding protein engineered to recognize the agonist serotonin and the antagonist granisetron with affinities comparable to the 5-HT3 receptor. In the serotonin-bound structure, we observe hydrophilic interactions with loop E-binding site residues, which might enable transitions to channel opening. In the granisetron-bound structure, we observe a critical cation-pi interaction between the indazole moiety of the ligand and a cationic centre in loop D, which is uniquely present in the 5-HT3 receptor. We use a series of chemically tuned granisetron analogues to demonstrate the energetic contribution of this electrostatic interaction to high-affinity ligand binding in the human 5-HT3 receptor. Our study offers the first structural perspective on recognition of serotonin and antagonism by anti-emetics in the 5-HT3 receptor.

Structural basis of ligand recognition in 5-HT3 receptors.,Kesters D, Thompson AJ, Brams M, van Elk R, Spurny R, Geitmann M, Villalgordo JM, Guskov A, Helena Danielson U, Lummis SC, Smit AB, Ulens C EMBO Rep. 2012 Nov 30. doi: 10.1038/embor.2012.189. PMID:23196367<ref>PMID:23196367</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 2ymd" style="background-color:#fffaf0;"></div>

==See Also==
*[[Acetylcholine binding protein 3D structures|Acetylcholine binding protein 3D structures]]
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Aplca]]
[[Category: Large Structures]]
[[Category: Brams, M]]
[[Category: Danielson, U H]]
[[Category: Elk, R v]]
[[Category: Geitmann, M]]
[[Category: Guskov, A]]
[[Category: Kesters, D]]
[[Category: Lummis, S C.R]]
[[Category: Smit, A B]]
[[Category: Spurny, R]]
[[Category: Thompson, A J]]
[[Category: Ulens, C]]
[[Category: Villalgordo, J M]]
[[Category: Pentameric ligand-gated ion channel]]
[[Category: Receptor]]