3ls4: Difference between revisions
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==Crystal Structure of Anti-tetrahydrocannabinol Fab Fragment in Complex with THC== | ==Crystal Structure of Anti-tetrahydrocannabinol Fab Fragment in Complex with THC== | ||
<StructureSection load='3ls4' size='340' side='right' caption='[[3ls4]], [[Resolution|resolution]] 2.00Å' scene=''> | <StructureSection load='3ls4' size='340' side='right'caption='[[3ls4]], [[Resolution|resolution]] 2.00Å' scene=''> | ||
== Structural highlights == | == Structural highlights == | ||
<table><tr><td colspan='2'>[[3ls4]] is a 2 chain structure with sequence from [ | <table><tr><td colspan='2'>[[3ls4]] is a 2 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=3LS4 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3LS4 FirstGlance]. <br> | ||
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=TCI:(6AR,10AR)-6,6,9-TRIMETHYL-3-PENTYL-6A,7,8,10A-TETRAHYDRO-6H-BENZO[C]CHROMEN-1-OL'>TCI</scene> | </td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2Å</td></tr> | ||
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=TCI:(6AR,10AR)-6,6,9-TRIMETHYL-3-PENTYL-6A,7,8,10A-TETRAHYDRO-6H-BENZO[C]CHROMEN-1-OL'>TCI</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=3ls4 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3ls4 OCA], [https://pdbe.org/3ls4 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3ls4 RCSB], [https://www.ebi.ac.uk/pdbsum/3ls4 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3ls4 ProSAT]</span></td></tr> | ||
</table> | </table> | ||
== Evolutionary Conservation == | == Evolutionary Conservation == | ||
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Check<jmol> | Check<jmol> | ||
<jmolCheckbox> | <jmolCheckbox> | ||
<scriptWhenChecked>select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/ls/3ls4_consurf.spt"</scriptWhenChecked> | <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/ls/3ls4_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> | ||
</jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/ | </jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/main_output.php?pdb_ID=3ls4 ConSurf]. | ||
<div style="clear:both"></div> | <div style="clear:both"></div> | ||
<div style="background-color:#fffaf0;"> | <div style="background-color:#fffaf0;"> | ||
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | ||
</div> | </div> | ||
<div class="pdbe-citations 3ls4" style="background-color:#fffaf0;"></div> | |||
==See Also== | ==See Also== | ||
*[[Antibody|Antibody]] | *[[Antibody 3D structures|Antibody 3D structures]] | ||
*[[3D structures of non-human antibody|3D structures of non-human antibody]] | |||
== References == | == References == | ||
<references/> | <references/> | ||
__TOC__ | __TOC__ | ||
</StructureSection> | </StructureSection> | ||
[[Category: | [[Category: Large Structures]] | ||
[[Category: | [[Category: Mus musculus]] | ||
[[Category: | [[Category: Niemi MH]] | ||
[[Category: | [[Category: Rouvinen J]] | ||
Latest revision as of 05:05, 21 November 2024
Crystal Structure of Anti-tetrahydrocannabinol Fab Fragment in Complex with THCCrystal Structure of Anti-tetrahydrocannabinol Fab Fragment in Complex with THC
Structural highlights
Evolutionary Conservation Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf. Publication Abstract from PubMed(-)-Delta9-tetrahydrocannabinol (THC) is the main psychoactive compound found in cannabis. In this study, an anti-THC Fab fragment, designed T3, was isolated from a display library cloned from the spleen cells of a mouse immunized with a THC-bovine serum albumin conjugate, and the crystal structures of the T3 Fab in its free form and in complex with THC were determined at 1.9 A and 2.0 A resolution, respectively. The THC binding site of the T3 Fab is a narrow cavity: the n-pentyl group of THC protrudes deep into the interface area between the variable domains and the C(10) monoterpene moiety of the hapten is partially exposed to solvent. The metabolites of THC, with modifications in the C(10) monoterpene moiety, 11-nor-9-carboxy-Delta(9)-tetrahydrocannabinol and 11-hydroxy-?(9)-tetrahydrocannabinol, are bound by the T3 Fab with a higher affinity than THC. The crystal structures suggest that Ser52H and Arg53H of the T3 Fab are able to make hydrogen bonds with the metabolites, which leads to an increased binding against these metabolites. By developing a T3 Fab-Delta(9)-THC immunocomplex binding antibody from a naive antibody phage display library, the specificity of the Delta(9)-THC binding is highly increased, which allows a one-step, homogeneous, fluorescence resonance energy transfer-based sensitive immunoassay, with a detection limit of 20 ng/ml from saliva samples. A structural insight into the molecular recognition of a (-)-Delta9-tetrahydrocannabinol and the development of a sensitive, one-step, homogeneous immunocomplex-based assay for its detection.,Niemi MH, Turunen L, Pulli T, Nevanen TK, Hoyhtya M, Soderlund H, Rouvinen J, Takkinen K J Mol Biol. 2010 Jul 23;400(4):803-14. Epub 2010 May 26. PMID:20630472[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See AlsoReferences
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