This old version of Proteopedia is provided for student assignments while the new version is undergoing repairs. Content and edits done in this old version of Proteopedia after March 1, 2026 will eventually be lost when it is retired in about June of 2026.
Apply for new accounts at the new Proteopedia. Your logins will work in both the old and new versions.
3o2p
From Proteopedia
(Difference between revisions)
m (Protected "3o2p" [edit=sysop:move=sysop]) |
|||
| (4 intermediate revisions not shown.) | |||
| Line 1: | Line 1: | ||
| - | [[Image:3o2p.png|left|200px]] | ||
| - | < | + | ==A Dual E3 Mechanism for Rub1 Ligation to Cdc53: Dcn1(P)-Cdc53(WHB)== |
| - | + | <StructureSection load='3o2p' size='340' side='right'caption='[[3o2p]], [[Resolution|resolution]] 2.23Å' scene=''> | |
| - | You may | + | == Structural highlights == |
| - | + | <table><tr><td colspan='2'>[[3o2p]] is a 2 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=3O2P OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3O2P 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]] 2.233Å</td></tr> | |
| - | -- | + | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=GOL:GLYCEROL'>GOL</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=3o2p FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3o2p OCA], [https://pdbe.org/3o2p PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3o2p RCSB], [https://www.ebi.ac.uk/pdbsum/3o2p PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3o2p ProSAT]</span></td></tr> | |
| + | </table> | ||
| + | == Function == | ||
| + | [https://www.uniprot.org/uniprot/DCN1_YEAST DCN1_YEAST] Required for neddylation of cullin components of SCF-type E3 ubiquitin ligase complexes. Neddylation of cullins play an essential role in the regulation of SCF-type complexes activity. Does not act by preventing deneddylation, but rather facilitates neddylation, possibly by acting with HRT1/RBX1 to recruit the Nedd8-charged E2 UBC12 to the cullin component of SCF-type complexes.<ref>PMID:15988528</ref> | ||
| + | == Evolutionary Conservation == | ||
| + | [[Image:Consurf_key_small.gif|200px|right]] | ||
| + | Check<jmol> | ||
| + | <jmolCheckbox> | ||
| + | <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/o2/3o2p_consurf.spt"</scriptWhenChecked> | ||
| + | <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked> | ||
| + | <text>to colour the structure by Evolutionary Conservation</text> | ||
| + | </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/main_output.php?pdb_ID=3o2p ConSurf]. | ||
| + | <div style="clear:both"></div> | ||
| + | <div style="background-color:#fffaf0;"> | ||
| + | == Publication Abstract from PubMed == | ||
| + | In ubiquitin-like protein (UBL) cascades, a thioester-linked E2 approximately UBL complex typically interacts with an E3 enzyme for UBL transfer to the target. Here we demonstrate a variant mechanism, whereby the E2 Ubc12 functions with two E3s, Hrt1 and Dcn1, for ligation of the UBL Rub1 to Cdc53's WHB subdomain. Hrt1 functions like a conventional RING E3, with its N terminus recruiting Cdc53 and C-terminal RING activating Ubc12 approximately Rub1. Dcn1's "potentiating neddylation" domain (Dcn1(P)) acts as an additional E3, reducing nonspecific Hrt1-mediated Ubc12 approximately Rub1 discharge and directing Ubc12's active site to Cdc53. Crystal structures of Dcn1(P)-Cdc53(WHB) and Ubc12 allow modeling of a catalytic complex, supported by mutational data. We propose that Dcn1's interactions with both Cdc53 and Ubc12 would restrict the otherwise flexible Hrt1 RING-bound Ubc12 approximately Rub1 to a catalytically competent orientation. Our data reveal mechanisms by which two E3s function synergistically to promote UBL transfer from one E2 to a target. | ||
| - | + | A dual E3 mechanism for Rub1 ligation to Cdc53.,Scott DC, Monda JK, Grace CR, Duda DM, Kriwacki RW, Kurz T, Schulman BA Mol Cell. 2010 Sep 10;39(5):784-96. PMID:20832729<ref>PMID:20832729</ref> | |
| + | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | ||
| + | </div> | ||
| + | <div class="pdbe-citations 3o2p" style="background-color:#fffaf0;"></div> | ||
| - | + | ==See Also== | |
| - | + | *[[Cullin 3D structures|Cullin 3D structures]] | |
| - | + | == References == | |
| - | + | <references/> | |
| - | + | __TOC__ | |
| - | + | </StructureSection> | |
| - | == | + | [[Category: Large Structures]] |
| - | [[ | + | |
| - | + | ||
| - | == | + | |
| - | < | + | |
[[Category: Saccharomyces cerevisiae]] | [[Category: Saccharomyces cerevisiae]] | ||
| - | [[Category: Duda | + | [[Category: Duda DM]] |
| - | [[Category: Grace | + | [[Category: Grace CRR]] |
| - | [[Category: Kriwacki | + | [[Category: Kriwacki RW]] |
| - | [[Category: Kurz | + | [[Category: Kurz T]] |
| - | [[Category: Monda | + | [[Category: Monda JK]] |
| - | [[Category: Schulman | + | [[Category: Schulman BA]] |
| - | [[Category: Scott | + | [[Category: Scott DC]] |
| - | + | ||
| - | + | ||
Current revision
A Dual E3 Mechanism for Rub1 Ligation to Cdc53: Dcn1(P)-Cdc53(WHB)
| |||||||||||

