6y6d: Difference between revisions
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==== | ==Tubulin-7-Aminonoscapine complex== | ||
<StructureSection load='6y6d' size='340' side='right'caption='[[6y6d]]' scene=''> | <StructureSection load='6y6d' size='340' side='right'caption='[[6y6d]], [[Resolution|resolution]] 2.20Å' 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= OCA]. For a <b>guided tour on the structure components</b> use [ | <table><tr><td colspan='2'>[[6y6d]] is a 6 chain structure with sequence from [https://en.wikipedia.org/wiki/Bos_taurus Bos taurus], [https://en.wikipedia.org/wiki/Gallus_gallus Gallus gallus] and [https://en.wikipedia.org/wiki/Rattus_norvegicus Rattus norvegicus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6Y6D OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=6Y6D FirstGlance]. <br> | ||
</td></tr><tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[ | </td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.2Å</td></tr> | ||
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=ACP:PHOSPHOMETHYLPHOSPHONIC+ACID+ADENYLATE+ESTER'>ACP</scene>, <scene name='pdbligand=CA:CALCIUM+ION'>CA</scene>, <scene name='pdbligand=GDP:GUANOSINE-5-DIPHOSPHATE'>GDP</scene>, <scene name='pdbligand=GOL:GLYCEROL'>GOL</scene>, <scene name='pdbligand=GTP:GUANOSINE-5-TRIPHOSPHATE'>GTP</scene>, <scene name='pdbligand=MES:2-(N-MORPHOLINO)-ETHANESULFONIC+ACID'>MES</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene>, <scene name='pdbligand=OBQ:(3~{S})-7-azanyl-6-methoxy-3-[(5~{R})-4-methoxy-6-methyl-7,8-dihydro-5~{H}-[1,3]dioxolo[4,5-g]isoquinolin-5-yl]-3~{H}-2-benzofuran-1-one'>OBQ</scene></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=6y6d FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6y6d OCA], [https://pdbe.org/6y6d PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=6y6d RCSB], [https://www.ebi.ac.uk/pdbsum/6y6d PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=6y6d ProSAT]</span></td></tr> | |||
</table> | </table> | ||
== Function == | |||
[https://www.uniprot.org/uniprot/STMN4_RAT STMN4_RAT] Exhibits microtubule-destabilizing activity.<ref>PMID:15039434</ref> <ref>PMID:12111843</ref> <ref>PMID:15014504</ref> | |||
<div style="background-color:#fffaf0;"> | |||
== Publication Abstract from PubMed == | |||
Noscapine is a natural alkaloid that is used as an antitussive medicine. However, it also acts as a weak anticancer agent in certain in vivo models through a mechanism that is largely unknown. Here, we performed structural studies and show that the cytotoxic agent 7A-O-demethoxy-amino-noscapine (7A-aminonoscapine) binds to the colchicine site of tubulin. We suggest that the 7A-methoxy group of noscapine prevents binding to tubulin due to a steric clash of the compound with the T5-loop of alpha-tubulin. We further propose that the anticancer activity of noscapine arises from a bioactive metabolite that binds to the colchicine site of tubulin to induce mitotic arrest through a microtubule cytoskeleton-based mechanism. | |||
Structural basis of noscapine activation for tubulin binding.,Oliva MA, Prota AE, Rodriguez-Salarichs J, Gu W, Bennani YL, Jimenez-Barbero J, Bargsten K, Canales A, Steinmetz MO, Diaz JF J Med Chem. 2020 Jul 13. doi: 10.1021/acs.jmedchem.0c00855. PMID:32657585<ref>PMID:32657585</ref> | |||
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |||
</div> | |||
<div class="pdbe-citations 6y6d" style="background-color:#fffaf0;"></div> | |||
==See Also== | |||
*[[Stathmin-4 3D structures|Stathmin-4 3D structures]] | |||
*[[Tubulin 3D Structures|Tubulin 3D Structures]] | |||
*[[Tubulin tyrosine ligase|Tubulin tyrosine ligase]] | |||
== References == | |||
<references/> | |||
__TOC__ | __TOC__ | ||
</StructureSection> | </StructureSection> | ||
[[Category: Bos taurus]] | |||
[[Category: Gallus gallus]] | |||
[[Category: Large Structures]] | [[Category: Large Structures]] | ||
[[Category: | [[Category: Rattus norvegicus]] | ||
[[Category: Bennani YL]] | |||
[[Category: Canales A]] | |||
[[Category: Diaz JF]] | |||
[[Category: Gu W]] | |||
[[Category: Jimenez-Barbero J]] | |||
[[Category: Oliva MA]] | |||
[[Category: Prota AE]] | |||
[[Category: Rodriguez-Salarichs J]] | |||
[[Category: Steinmetz MO]] | |||
