3a33: Difference between revisions
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==UbcH5b~Ubiquitin Conjugate== | |||
<StructureSection load='3a33' size='340' side='right'caption='[[3a33]], [[Resolution|resolution]] 2.20Å' scene=''> | |||
== Structural highlights == | |||
<table><tr><td colspan='2'>[[3a33]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3A33 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3A33 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]] 2.2Å</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=3a33 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3a33 OCA], [https://pdbe.org/3a33 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3a33 RCSB], [https://www.ebi.ac.uk/pdbsum/3a33 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3a33 ProSAT]</span></td></tr> | |||
</table> | |||
== Function == | |||
[https://www.uniprot.org/uniprot/UB2D2_HUMAN UB2D2_HUMAN] Accepts ubiquitin from the E1 complex and catalyzes its covalent attachment to other proteins. In vitro catalyzes 'Lys-48'-linked polyubiquitination. Mediates the selective degradation of short-lived and abnormal proteins. Functions in the E6/E6-AP-induced ubiquitination of p53/TP53. Mediates ubiquitination of PEX5 and autoubiquitination of STUB1 and TRAF6. Involved in the signal-induced conjugation and subsequent degradation of NFKBIA, FBXW2-mediated GCM1 ubiquitination and degradation, MDM2-dependent degradation of p53/TP53 and the activation of MAVS in the mitochondria by DDX58/RIG-I in response to viral infection. Essential for viral activation of IRF3.<ref>PMID:10329681</ref> <ref>PMID:15280377</ref> <ref>PMID:18042044</ref> <ref>PMID:18703417</ref> <ref>PMID:18359941</ref> <ref>PMID:19854139</ref> <ref>PMID:20403326</ref> <ref>PMID:20061386</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/a3/3a33_consurf.spt"</scriptWhenChecked> | |||
<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview03.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=3a33 ConSurf]. | |||
<div style="clear:both"></div> | |||
<div style="background-color:#fffaf0;"> | |||
== Publication Abstract from PubMed == | |||
E2 ubiquitin-conjugating enzymes catalyze the attachment of ubiquitin to lysine residues of target proteins. The UbcH5b E2 enzyme has been shown to play a key role in the initiation of the ubiquitination of substrate proteins upon action of several E3 ligases. Here we have determined the 2.2 A crystal structure of an intermediate of UbcH5b~ubiquitin (Ub) conjugate, which is assembled into an infinite spiral through the backside interaction. This active complex may provide multiple E2 active sites, enabling efficient ubiquitination of substrates. Indeed, biochemical assays support a model in which the self-assembled UbcH5b~Ub can serve as a bridge for the gap between the lysine residue of the substrate and the catalytic cysteine of E2. | |||
Crystal structure of UbcH5b~ubiquitin intermediate: insight into the formation of the self-assembled E2~Ub conjugates.,Sakata E, Satoh T, Yamamoto S, Yamaguchi Y, Yagi-Utsumi M, Kurimoto E, Tanaka K, Wakatsuki S, Kato K Structure. 2010 Jan 13;18(1):138-47. PMID:20152160<ref>PMID:20152160</ref> | |||
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |||
</div> | |||
<div class="pdbe-citations 3a33" style="background-color:#fffaf0;"></div> | |||
==See Also== | ==See Also== | ||
*[[ | *[[3D structures of ubiquitin|3D structures of ubiquitin]] | ||
*[[3D structures of ubiquitin conjugating enzyme|3D structures of ubiquitin conjugating enzyme]] | |||
== | == References == | ||
< | <references/> | ||
__TOC__ | |||
</StructureSection> | |||
[[Category: Homo sapiens]] | [[Category: Homo sapiens]] | ||
[[Category: | [[Category: Large Structures]] | ||
[[Category: Kato | [[Category: Kato K]] | ||
[[Category: Kurimoto | [[Category: Kurimoto E]] | ||
[[Category: Sakata | [[Category: Sakata E]] | ||
[[Category: Satoh | [[Category: Satoh T]] | ||
[[Category: Wakatsuki | [[Category: Wakatsuki S]] | ||
[[Category: Yagi-Utsumi | [[Category: Yagi-Utsumi M]] | ||
[[Category: Yamaguchi | [[Category: Yamaguchi Y]] | ||
[[Category: Yamamoto | [[Category: Yamamoto S]] | ||
Latest revision as of 12:41, 6 November 2024
UbcH5b~Ubiquitin ConjugateUbcH5b~Ubiquitin Conjugate
Structural highlights
FunctionUB2D2_HUMAN Accepts ubiquitin from the E1 complex and catalyzes its covalent attachment to other proteins. In vitro catalyzes 'Lys-48'-linked polyubiquitination. Mediates the selective degradation of short-lived and abnormal proteins. Functions in the E6/E6-AP-induced ubiquitination of p53/TP53. Mediates ubiquitination of PEX5 and autoubiquitination of STUB1 and TRAF6. Involved in the signal-induced conjugation and subsequent degradation of NFKBIA, FBXW2-mediated GCM1 ubiquitination and degradation, MDM2-dependent degradation of p53/TP53 and the activation of MAVS in the mitochondria by DDX58/RIG-I in response to viral infection. Essential for viral activation of IRF3.[1] [2] [3] [4] [5] [6] [7] [8] 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 PubMedE2 ubiquitin-conjugating enzymes catalyze the attachment of ubiquitin to lysine residues of target proteins. The UbcH5b E2 enzyme has been shown to play a key role in the initiation of the ubiquitination of substrate proteins upon action of several E3 ligases. Here we have determined the 2.2 A crystal structure of an intermediate of UbcH5b~ubiquitin (Ub) conjugate, which is assembled into an infinite spiral through the backside interaction. This active complex may provide multiple E2 active sites, enabling efficient ubiquitination of substrates. Indeed, biochemical assays support a model in which the self-assembled UbcH5b~Ub can serve as a bridge for the gap between the lysine residue of the substrate and the catalytic cysteine of E2. Crystal structure of UbcH5b~ubiquitin intermediate: insight into the formation of the self-assembled E2~Ub conjugates.,Sakata E, Satoh T, Yamamoto S, Yamaguchi Y, Yagi-Utsumi M, Kurimoto E, Tanaka K, Wakatsuki S, Kato K Structure. 2010 Jan 13;18(1):138-47. PMID:20152160[9] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See AlsoReferences
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