View source for 6qri


==Structure of rabbit G-actin in complex with chivosazole A==
<StructureSection load='6qri' size='340' side='right'caption='[[6qri]], [[Resolution|resolution]] 2.40&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[6qri]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Oryctolagus_cuniculus Oryctolagus cuniculus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6QRI OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=6QRI FirstGlance]. <br>
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.4&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=ATP:ADENOSINE-5-TRIPHOSPHATE'>ATP</scene>, <scene name='pdbligand=CV9:(2~{R},3~{R},5~{S},6~{E},8~{E},10~{Z},12~{S},13~{R},16~{Z},18~{E},20~{Z},22~{E},24~{R},25~{S},26~{E},28~{Z})-13-[(2~{S},3~{S},5~{S})-3,5-bis(oxidanyl)hexan-2-yl]-25-[(2~{R},3~{R},4~{S},5~{R},6~{R})-3,4-dimethoxy-6-methyl-5-oxidanyl-oxan-2-yl]oxy-3-methoxy-2,12,22,24-tetramethyl-5-oxidanyl-14,32-dioxa-33-azabicyclo[28.2.1]tritriaconta-1(33),6,8,10,16,18,20,22,26,28,30-undecaen-15-one'>CV9</scene>, <scene name='pdbligand=HIC:4-METHYL-HISTIDINE'>HIC</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</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=6qri FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6qri OCA], [https://pdbe.org/6qri PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=6qri RCSB], [https://www.ebi.ac.uk/pdbsum/6qri PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=6qri ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/ACTS_RABIT ACTS_RABIT] Actins are highly conserved proteins that are involved in various types of cell motility and are ubiquitously expressed in all eukaryotic cells.
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
Actin is a protein of central importance for many cellular key processes. It is regulated by local interactions with a large number of actin binding proteins (ABPs). Various compounds are known to either increase or decrease the polymerization dynamics of actin. However, no actin binding compound has been developed for clinical applications yet because of selectivity issues. We provide a crystal structure of the natural product chivosazole A (ChivoA) bound to actin and show that-in addition to inhibiting nucleation, polymerization, and severing of F-actin filaments-it selectively modulates binding of ABPs to G-actin: Although unphysiological actin dimers are induced by ChivoA, interaction with gelsolin, profilin, cofilin, and thymosin-beta4 is inhibited. Moreover, ChivoA causes transcriptional effects differing from latrunculin B, an actin binder with a different binding site. Our data show that ChivoA and related compounds could serve as scaffolds for the development of actin binding molecules selectively targeting specific actin functions.

Chivosazole A Modulates Protein-Protein Interactions of Actin.,Wang S, Gegenfurtner FA, Crevenna AH, Ziegenhain C, Kliesmete Z, Enard W, Muller R, Vollmar AM, Schneider S, Zahler S J Nat Prod. 2019 Jul 1. doi: 10.1021/acs.jnatprod.9b00335. PMID:31260301<ref>PMID:31260301</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 6qri" style="background-color:#fffaf0;"></div>

==See Also==
*[[Actin 3D structures|Actin 3D structures]]
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Large Structures]]
[[Category: Oryctolagus cuniculus]]
[[Category: Schneider S]]
[[Category: Wang S]]
[[Category: Zahler S]]