8sg4: Difference between revisions
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New page: '''Unreleased structure''' The entry 8sg4 is ON HOLD Authors: Description: Category: Unreleased Structures |
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==E1435Q Ycf1 mutant in dephosphorylated state== | |||
<StructureSection load='8sg4' size='340' side='right'caption='[[8sg4]], [[Resolution|resolution]] 3.11Å' scene=''> | |||
== Structural highlights == | |||
<table><tr><td colspan='2'>[[8sg4]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Saccharomyces_cerevisiae Saccharomyces cerevisiae]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=8SG4 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=8SG4 FirstGlance]. <br> | |||
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">Electron Microscopy, [[Resolution|Resolution]] 3.11Å</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=8sg4 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=8sg4 OCA], [https://pdbe.org/8sg4 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=8sg4 RCSB], [https://www.ebi.ac.uk/pdbsum/8sg4 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=8sg4 ProSAT]</span></td></tr> | |||
</table> | |||
== Function == | |||
[https://www.uniprot.org/uniprot/YCFI_YEAST YCFI_YEAST] Cooperates for the ATP-dependent vacuolar transport of bilirubin and glutathione conjugates.<ref>PMID:10790694</ref> <ref>PMID:8626454</ref> | |||
<div style="background-color:#fffaf0;"> | |||
== Publication Abstract from PubMed == | |||
Yeast Cadmium Factor 1 (Ycf1) sequesters glutathione and glutathione-heavy metal conjugates into yeast vacuoles as a cellular detoxification mechanism. Ycf1 belongs to the C subfamily of ATP Binding Cassette (ABC) transporters characterized by long flexible linkers, notably the regulatory domain (R-domain). R-domain phosphorylation is necessary for activity, whereas dephosphorylation induces autoinhibition through an undefined mechanism. Because of its transient and dynamic nature, no structure of the dephosphorylated Ycf1 exists, limiting understanding of this R-domain regulation. Here, we capture the dephosphorylated Ycf1 using cryo-EM and show that the unphosphorylated R-domain indeed forms an ordered structure with an unexpected hairpin topology bound within the Ycf1 substrate cavity. This architecture and binding mode resemble that of a viral peptide inhibitor of an ABC transporter and the secreted bacterial WXG peptide toxins. We further reveal the subset of phosphorylation sites within the hairpin turn that drive the reorganization of the R-domain conformation, suggesting a mechanism for Ycf1 activation by phosphorylation-dependent release of R-domain mediated autoinhibition. | |||
Structural basis for autoinhibition by the dephosphorylated regulatory domain of Ycf1.,Khandelwal NK, Tomasiak TM Nat Commun. 2024 Mar 16;15(1):2389. doi: 10.1038/s41467-024-46722-w. PMID:38493146<ref>PMID:38493146</ref> | |||
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |||
[[Category: | </div> | ||
<div class="pdbe-citations 8sg4" style="background-color:#fffaf0;"></div> | |||
== References == | |||
<references/> | |||
__TOC__ | |||
</StructureSection> | |||
[[Category: Large Structures]] | |||
[[Category: Saccharomyces cerevisiae]] | |||
[[Category: Khandelwal NK]] | |||
[[Category: Tomasiak TM]] | |||
Latest revision as of 05:04, 18 September 2024
E1435Q Ycf1 mutant in dephosphorylated state
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