3fev: Difference between revisions
No edit summary |
No edit summary |
||
(3 intermediate revisions by the same user not shown) | |||
Line 1: | Line 1: | ||
==Crystal structure of the chimeric muscarinic toxin MT7 with loop 1 from MT1.== | ==Crystal structure of the chimeric muscarinic toxin MT7 with loop 1 from MT1.== | ||
<StructureSection load='3fev' size='340' side='right' caption='[[3fev]], [[Resolution|resolution]] 1.30Å' scene=''> | <StructureSection load='3fev' size='340' side='right'caption='[[3fev]], [[Resolution|resolution]] 1.30Å' scene=''> | ||
== Structural highlights == | == Structural highlights == | ||
<table><tr><td colspan='2'>[[3fev]] is a 3 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3FEV OCA]. For a <b>guided tour on the structure components</b> use [ | <table><tr><td colspan='2'>[[3fev]] is a 3 chain structure with sequence from [https://en.wikipedia.org/wiki/Dendroaspis_angusticeps Dendroaspis angusticeps]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3FEV OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3FEV FirstGlance]. <br> | ||
</td></tr><tr id=' | </td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.3Å</td></tr> | ||
<tr id=' | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene></td></tr> | ||
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[ | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=3fev FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3fev OCA], [https://pdbe.org/3fev PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3fev RCSB], [https://www.ebi.ac.uk/pdbsum/3fev PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3fev ProSAT]</span></td></tr> | ||
</table> | </table> | ||
== Function == | == Function == | ||
[[ | [https://www.uniprot.org/uniprot/3SIM7_DENAN 3SIM7_DENAN] Binds irreversibly and specifically to an allosteric site of the muscarinic acetylcholine M1 receptor (CHRM1).<ref>PMID:10799315</ref> <ref>PMID:11562434</ref> <ref>PMID:12488533</ref> <ref>PMID:21557730</ref> [https://www.uniprot.org/uniprot/3SIM1_DENAN 3SIM1_DENAN] Shows a non-competitive interaction with adrenergic and muscarinic receptors. Binds to alpha-2b (ADRA2B) (IC(50)=2.3 nM), alpha-1a (ADRA1A), alpha-1b (ADRA1B), and alpha-2c (ADRA2C) adrenergic receptors. Reversibly binds to M1 (CHRM1) muscarinic acetylcholine receptors, probably by interacting with the orthosteric site (PubMed:12488533, PubMed:24793485, PubMed:7778123). Also reveals a slightly weaker effect at M3 (CHRM3) and M4 (CHRM4) receptors (PubMed:12488533, PubMed:24793485, PubMed:7778123). The order of potency is ADRA2B>>CHRM1>ADRA1A>ADRA1B>ADRA2C/CHRM4 (PubMed:24793485).<ref>PMID:12488533</ref> <ref>PMID:21557730</ref> <ref>PMID:24793485</ref> <ref>PMID:7778123</ref> | ||
== Evolutionary Conservation == | == Evolutionary Conservation == | ||
[[Image:Consurf_key_small.gif|200px|right]] | [[Image:Consurf_key_small.gif|200px|right]] | ||
Check<jmol> | Check<jmol> | ||
<jmolCheckbox> | <jmolCheckbox> | ||
<scriptWhenChecked>select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/fe/3fev_consurf.spt"</scriptWhenChecked> | <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/fe/3fev_consurf.spt"</scriptWhenChecked> | ||
<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/ | <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview03.spt</scriptWhenUnchecked> | ||
<text>to colour the structure by Evolutionary Conservation</text> | <text>to colour the structure by Evolutionary Conservation</text> | ||
</jmolCheckbox> | </jmolCheckbox> | ||
Line 33: | Line 33: | ||
__TOC__ | __TOC__ | ||
</StructureSection> | </StructureSection> | ||
[[Category: | [[Category: Dendroaspis angusticeps]] | ||
[[Category: | [[Category: Large Structures]] | ||
[[Category: | [[Category: Fruchart-Gaillard C]] | ||
[[Category: | [[Category: Menez A]] | ||
[[Category: Menez R]] | |||
[[Category: Mourier G]] | |||
[[Category: | [[Category: Servant D]] | ||
[[Category: | [[Category: Stura EA]] | ||
[[Category: | |||
[[Category: | |||