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| | ==Crystal structure of Plasmodium falciparum ubiquitin conjugating enzyme UBC9== | | ==Crystal structure of Plasmodium falciparum ubiquitin conjugating enzyme UBC9== |
| - | <StructureSection load='4jue' size='340' side='right' caption='[[4jue]], [[Resolution|resolution]] 1.85Å' scene=''> | + | <StructureSection load='4jue' size='340' side='right'caption='[[4jue]], [[Resolution|resolution]] 1.85Å' scene=''> |
| | == Structural highlights == | | == Structural highlights == |
| - | <table><tr><td colspan='2'>[[4jue]] is a 4 chain structure with sequence from [http://en.wikipedia.org/wiki/Plaf7 Plaf7]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4JUE OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4JUE FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[4jue]] is a 4 chain structure with sequence from [https://en.wikipedia.org/wiki/Plasmodium_falciparum_3D7 Plasmodium falciparum 3D7]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4JUE OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4JUE FirstGlance]. <br> |
| - | </td></tr><tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[4m1n|4m1n]]</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]] 1.851Å</td></tr> |
| - | <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">PF3D7_0915100, PFI0740c ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=36329 PLAF7])</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=4jue FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4jue OCA], [https://pdbe.org/4jue PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4jue RCSB], [https://www.ebi.ac.uk/pdbsum/4jue PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4jue ProSAT]</span></td></tr> |
| - | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4jue FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4jue OCA], [http://pdbe.org/4jue PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=4jue RCSB], [http://www.ebi.ac.uk/pdbsum/4jue PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=4jue ProSAT]</span></td></tr> | + | |
| | </table> | | </table> |
| - | <div style="background-color:#fffaf0;">
| + | == Function == |
| - | == Publication Abstract from PubMed == | + | [https://www.uniprot.org/uniprot/Q8I301_PLAF7 Q8I301_PLAF7] |
| - | Small ubiquitin-related modifiers (SUMOs) are post-translationally conjugated to other proteins and are thereby essential regulators of a wide range of cellular processes. Sumoylation, and enzymes of the sumoylation pathway, are conserved in the malaria causing parasite, Plasmodium falciparum. However, the specific functions of sumoylation in P. falciparum, and the degree of functional conservation between enzymes of the human and P. falciparum sumoylation pathways, have not been characterized. Here, we demonstrate that sumoylation levels peak during midstages of the intra-erythrocyte developmental cycle, concomitant with hemoglobin consumption and elevated oxidative stress. In vitro studies revealed that P. falciparum E1- and E2-conjugating enzymes interact effectively to recognize and modify RanGAP1, a model mammalian SUMO substrate. However, in heterologous reactions, P. falciparum E1 and E2 enzymes failed to interact with cognate human E2 and E1 partners, respectively, to modify RanGAP1. Structural analysis, binding studies, and functional assays revealed divergent amino acid residues within the E1-E2 binding interface that define organism-specific enzyme interactions. Our studies identify sumoylation as a potentially important regulator of oxidative stress response during the P. falciparum intra-erythrocyte developmental cycle, and define E1 and E2 interactions as a promising target for development of parasite-specific inhibitors of sumoylation and parasite replication.
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| - | Identification of Biochemically Distinct Properties of the Small Ubiquitin-related Modifier (SUMO) Conjugation Pathway in Plasmodium falciparum.,Reiter K, Mukhopadhyay D, Zhang H, Boucher LE, Kumar N, Bosch J, Matunis MJ J Biol Chem. 2013 Sep 27;288(39):27724-36. doi: 10.1074/jbc.M113.498410. Epub, 2013 Aug 13. PMID:23943616<ref>PMID:23943616</ref>
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| - | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br>
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| - | </div>
| + | |
| - | <div class="pdbe-citations 4jue" style="background-color:#fffaf0;"></div>
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| | ==See Also== | | ==See Also== |
| | *[[SUMO conjugating enzyme Ubc9|SUMO conjugating enzyme Ubc9]] | | *[[SUMO conjugating enzyme Ubc9|SUMO conjugating enzyme Ubc9]] |
| - | == References == | |
| - | <references/> | |
| | __TOC__ | | __TOC__ |
| | </StructureSection> | | </StructureSection> |
| - | [[Category: Plaf7]] | + | [[Category: Large Structures]] |
| - | [[Category: Bosch, J]] | + | [[Category: Plasmodium falciparum 3D7]] |
| - | [[Category: Boucher, L E]] | + | [[Category: Bosch J]] |
| - | [[Category: Matunis, J M]]
| + | [[Category: Boucher LE]] |
| - | [[Category: Reiter, K H]] | + | [[Category: Matunis JM]] |
| - | [[Category: E2 enzyme]] | + | [[Category: Reiter KH]] |
| - | [[Category: Protein binding]] | + | |
| - | [[Category: Sumo]]
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