View source for 9vd9


==Cryo-EM structure of the human DSS1-INTAC-PEC complex==
<StructureSection load='9vd9' size='340' side='right'caption='[[9vd9]], [[Resolution|resolution]] 4.60&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[9vd9]] is a 10 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=9VD9 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=9VD9 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]] 4.6&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene>, <scene name='pdbligand=MN:MANGANESE+(II)+ION'>MN</scene>, <scene name='pdbligand=ZN:ZINC+ION'>ZN</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=9vd9 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=9vd9 OCA], [https://pdbe.org/9vd9 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=9vd9 RCSB], [https://www.ebi.ac.uk/pdbsum/9vd9 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=9vd9 ProSAT]</span></td></tr>
</table>
== Disease ==
[https://www.uniprot.org/uniprot/SEM1_HUMAN SEM1_HUMAN] Split hand-split foot malformation. 
== Function ==
[https://www.uniprot.org/uniprot/SEM1_HUMAN SEM1_HUMAN] Component of the 26S proteasome, a multiprotein complex involved in the ATP-dependent degradation of ubiquitinated proteins. This complex plays a key role in the maintenance of protein homeostasis by removing misfolded or damaged proteins, which could impair cellular functions, and by removing proteins whose functions are no longer required. Therefore, the proteasome participates in numerous cellular processes, including cell cycle progression, apoptosis, or DNA damage repair (PubMed:15117943). Component of the TREX-2 complex (transcription and export complex 2), composed of at least ENY2, GANP, PCID2, SEM1, and either centrin CETN2 or CETN3 (PubMed:22307388). The TREX-2 complex functions in docking export-competent ribonucleoprotein particles (mRNPs) to the nuclear entrance of the nuclear pore complex (nuclear basket). TREX-2 participates in mRNA export and accurate chromatin positioning in the nucleus by tethering genes to the nuclear periphery. Binds and stabilizes BRCA2 and is thus involved in the control of R-loop-associated DNA damage and thus transcription-associated genomic instability. R-loop accumulation increases in SEM1-depleted cells.<ref>PMID:1317798</ref> <ref>PMID:15117943</ref> <ref>PMID:22307388</ref> <ref>PMID:24896180</ref> 
== References ==
<references/>
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</StructureSection>
[[Category: Homo sapiens]]
[[Category: Large Structures]]
[[Category: Cheng J]]
[[Category: Xu Y]]
[[Category: Zheng H]]