8enk
From Proteopedia
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| - | '''Unreleased structure''' | ||
| - | + | ==Crystal structure of UAP56 in complex with Tho1, the yeast homolog of human SARNP== | |
| - | + | <StructureSection load='8enk' size='340' side='right'caption='[[8enk]], [[Resolution|resolution]] 2.50Å' scene=''> | |
| - | + | == Structural highlights == | |
| - | + | <table><tr><td colspan='2'>[[8enk]] is a 5 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens], [https://en.wikipedia.org/wiki/Saccharomyces_cerevisiae Saccharomyces cerevisiae] and [https://en.wikipedia.org/wiki/Synthetic_construct Synthetic construct]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=8ENK OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=8ENK 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]] 2.5Å</td></tr> | |
| - | [[Category: | + | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=ADP:ADENOSINE-5-DIPHOSPHATE'>ADP</scene>, <scene name='pdbligand=BEF:BERYLLIUM+TRIFLUORIDE+ION'>BEF</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</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=8enk FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=8enk OCA], [https://pdbe.org/8enk PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=8enk RCSB], [https://www.ebi.ac.uk/pdbsum/8enk PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=8enk ProSAT]</span></td></tr> | ||
| + | </table> | ||
| + | == Function == | ||
| + | [https://www.uniprot.org/uniprot/DX39B_HUMAN DX39B_HUMAN] Component of the THO subcomplex of the TREX complex. The TREX complex specifically associates with spliced mRNA and not with unspliced pre-mRNA. It is recruited to spliced mRNAs by a transcription-independent mechanism. Binds to mRNA upstream of the exon-junction complex (EJC) and is recruited in a splicing- and cap-dependent manner to a region near the 5' end of the mRNA where it functions in mRNA export. The recruitment occurs via an interaction between ALYREF/THOC4 and the cap-binding protein NCBP1. DDX39B functions as a bridge between ALYREF/THOC4 and the THO complex. The TREX complex is essential for the export of Kaposi's sarcoma-associated herpesvirus (KSHV) intronless mRNAs and infectious virus production. The recruitment of the TREX complex to the intronless viral mRNA occurs via an interaction between KSHV ORF57 protein and ALYREF/THOC4.<ref>PMID:9242493</ref> <ref>PMID:11675789</ref> <ref>PMID:15833825</ref> <ref>PMID:15998806</ref> <ref>PMID:17190602</ref> <ref>PMID:17562711</ref> <ref>PMID:18974867</ref> <ref>PMID:15585580</ref> Splice factor that is required for the first ATP-dependent step in spliceosome assembly and for the interaction of U2 snRNP with the branchpoint. Has both RNA-stimulated ATP binding/hydrolysis activity and ATP-dependent RNA unwinding activity. Even with the stimulation of RNA, the ATPase activity is weak. Can only hydrolyze ATP but not other NTPs. The RNA stimulation of ATPase activity does not have a strong preference for the sequence and length of the RNA. However, ssRNA stimulates the ATPase activity much more strongly than dsRNA. Can unwind 5' or 3' overhangs or blunt end RNA duplexes in vitro. The ATPase and helicase activities are not influenced by U2AF2 and ALYREF/THOC4.<ref>PMID:9242493</ref> <ref>PMID:11675789</ref> <ref>PMID:15833825</ref> <ref>PMID:15998806</ref> <ref>PMID:17190602</ref> <ref>PMID:17562711</ref> <ref>PMID:18974867</ref> <ref>PMID:15585580</ref> | ||
| + | == References == | ||
| + | <references/> | ||
| + | __TOC__ | ||
| + | </StructureSection> | ||
| + | [[Category: Homo sapiens]] | ||
| + | [[Category: Large Structures]] | ||
| + | [[Category: Saccharomyces cerevisiae]] | ||
| + | [[Category: Synthetic construct]] | ||
| + | [[Category: Ren Y]] | ||
| + | [[Category: Xie Y]] | ||
Current revision
Crystal structure of UAP56 in complex with Tho1, the yeast homolog of human SARNP
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