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| | <StructureSection load='2eke' size='340' side='right'caption='[[2eke]], [[Resolution|resolution]] 1.90Å' scene=''> | | <StructureSection load='2eke' size='340' side='right'caption='[[2eke]], [[Resolution|resolution]] 1.90Å' scene=''> |
| | == Structural highlights == | | == Structural highlights == |
| - | <table><tr><td colspan='2'>[[2eke]] is a 4 chain structure with sequence from [https://en.wikipedia.org/wiki/Atcc_18824 Atcc 18824]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2EKE OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2EKE FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[2eke]] is a 4 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=2EKE OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2EKE FirstGlance]. <br> |
| - | </td></tr><tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat"><div style='overflow: auto; max-height: 3em;'>[[1z5s|1z5s]], [[1wyw|1wyw]], [[1euv|1euv]]</div></td></tr> | + | </td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.9Å</td></tr> |
| - | <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">UBC9 ([https://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=4932 ATCC 18824]), SMT3 ([https://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=4932 ATCC 18824])</td></tr>
| + | |
| - | <tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[https://en.wikipedia.org/wiki/Ubiquitin--protein_ligase Ubiquitin--protein ligase], with EC number [https://www.brenda-enzymes.info/php/result_flat.php4?ecno=6.3.2.19 6.3.2.19] </span></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=2eke FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2eke OCA], [https://pdbe.org/2eke PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2eke RCSB], [https://www.ebi.ac.uk/pdbsum/2eke PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2eke ProSAT]</span></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=2eke FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2eke OCA], [https://pdbe.org/2eke PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2eke RCSB], [https://www.ebi.ac.uk/pdbsum/2eke PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2eke ProSAT]</span></td></tr> |
| | </table> | | </table> |
| | == Function == | | == Function == |
| - | [[https://www.uniprot.org/uniprot/UBC9_YEAST UBC9_YEAST]] E2 ubiquitin-like--protein ligase mediating SUMO/Smt3 attachment to septins and PCNA. Seems to be involved in degradation of S- (CLB5) and M-phase cyclins (CLB2).<ref>PMID:9341106</ref> <ref>PMID:11572779</ref> [[https://www.uniprot.org/uniprot/SMT3_YEAST SMT3_YEAST]] Not known; suppressor of MIF2 mutations.
| + | [https://www.uniprot.org/uniprot/UBC9_YEAST UBC9_YEAST] E2 ubiquitin-like--protein ligase mediating SUMO/Smt3 attachment to septins and PCNA. Seems to be involved in degradation of S- (CLB5) and M-phase cyclins (CLB2).<ref>PMID:9341106</ref> <ref>PMID:11572779</ref> |
| | == Evolutionary Conservation == | | == Evolutionary Conservation == |
| | [[Image:Consurf_key_small.gif|200px|right]] | | [[Image:Consurf_key_small.gif|200px|right]] |
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| | __TOC__ | | __TOC__ |
| | </StructureSection> | | </StructureSection> |
| - | [[Category: Atcc 18824]] | |
| | [[Category: Large Structures]] | | [[Category: Large Structures]] |
| - | [[Category: Ubiquitin--protein ligase]] | + | [[Category: Saccharomyces cerevisiae]] |
| - | [[Category: Duda, D M]] | + | [[Category: Duda DM]] |
| - | [[Category: Schulman, B A]] | + | [[Category: Schulman BA]] |
| - | [[Category: Ligase-protein binding complex]]
| + | |
| - | [[Category: Sbm]]
| + | |
| - | [[Category: Smt3]]
| + | |
| - | [[Category: Sumo binding motif]]
| + | |
| - | [[Category: Ubc9]]
| + | |
| Structural highlights
Function
UBC9_YEAST E2 ubiquitin-like--protein ligase mediating SUMO/Smt3 attachment to septins and PCNA. Seems to be involved in degradation of S- (CLB5) and M-phase cyclins (CLB2).[1] [2]
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 PubMed
The SUMO ubiquitin-like proteins play regulatory roles in cell division, transcription, DNA repair, and protein subcellular localization. Paralleling other ubiquitin-like proteins, SUMO proteins are proteolytically processed to maturity, conjugated to targets by E1-E2-E3 cascades, and subsequently recognized by specific downstream effectors containing a SUMO-binding motif (SBM). SUMO and its E2 from the budding yeast Saccharomyces cerevisiae, Smt3p and Ubc9p, are encoded by essential genes. Here we describe the 1.9 A resolution crystal structure of a non-covalent Smt3p-Ubc9p complex. Unexpectedly, a heterologous portion of the crystallized complex derived from the expression construct mimics an SBM, and binds Smt3p in a manner resembling SBM binding to human SUMO family members. In the complex, Smt3p binds a surface distal from Ubc9's catalytic cysteine. The structure implies that a single molecule of Smt3p cannot bind concurrently to both the non-covalent binding site and the catalytic cysteine of a single Ubc9p molecule. However, formation of higher-order complexes can occur, where a single Smt3p covalently linked to one Ubc9p's catalytic cysteine also binds non-covalently to another molecule of Ubc9p. Comparison with other structures from the SUMO pathway suggests that formation of the non-covalent Smt3p-Ubc9p complex occurs mutually exclusively with many other Smt3p and Ubc9p interactions in the conjugation cascade. By contrast, high-resolution insights into how Smt3p-Ubc9p can also interact with downstream recognition machineries come from contacts with the SBM mimic. Interestingly, the overall architecture of the Smt3p-Ubc9p complex is strikingly similar to recent structures from the ubiquitin pathway. The results imply that non-covalent ubiquitin-like protein-E2 complexes are conserved platforms, which function as parts of larger assemblies involved in many protein post-translational regulatory pathways.
Structure of a SUMO-binding-motif mimic bound to Smt3p-Ubc9p: conservation of a non-covalent ubiquitin-like protein-E2 complex as a platform for selective interactions within a SUMO pathway.,Duda DM, van Waardenburg RC, Borg LA, McGarity S, Nourse A, Waddell MB, Bjornsti MA, Schulman BA J Mol Biol. 2007 Jun 8;369(3):619-30. Epub 2007 Apr 10. PMID:17475278[3]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
See Also
References
- ↑ Johnson ES, Blobel G. Ubc9p is the conjugating enzyme for the ubiquitin-like protein Smt3p. J Biol Chem. 1997 Oct 24;272(43):26799-802. PMID:9341106
- ↑ Johnson ES, Gupta AA. An E3-like factor that promotes SUMO conjugation to the yeast septins. Cell. 2001 Sep 21;106(6):735-44. PMID:11572779
- ↑ Duda DM, van Waardenburg RC, Borg LA, McGarity S, Nourse A, Waddell MB, Bjornsti MA, Schulman BA. Structure of a SUMO-binding-motif mimic bound to Smt3p-Ubc9p: conservation of a non-covalent ubiquitin-like protein-E2 complex as a platform for selective interactions within a SUMO pathway. J Mol Biol. 2007 Jun 8;369(3):619-30. Epub 2007 Apr 10. PMID:17475278 doi:10.1016/j.jmb.2007.04.007
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