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| | ==Structure of U2AF65 D231V variant with BrU5 DNA== | | ==Structure of U2AF65 D231V variant with BrU5 DNA== |
| - | <StructureSection load='4tu7' size='340' side='right' caption='[[4tu7]], [[Resolution|resolution]] 2.09Å' scene=''> | + | <StructureSection load='4tu7' size='340' side='right'caption='[[4tu7]], [[Resolution|resolution]] 2.09Å' scene=''> |
| | == Structural highlights == | | == Structural highlights == |
| - | <table><tr><td colspan='2'>[[4tu7]] is a 4 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4TU7 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4TU7 FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[4tu7]] is a 4 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens] 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=4TU7 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4TU7 FirstGlance]. <br> |
| - | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=CPQ:N,N-BIS(3-D-GLUCONAMIDOPROPYL)DEOXYCHOLAMIDE'>CPQ</scene>, <scene name='pdbligand=DIO:1,4-DIETHYLENE+DIOXIDE'>DIO</scene>, <scene name='pdbligand=GOL:GLYCEROL'>GOL</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene></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]] 2.087Å</td></tr> |
| - | <tr id='NonStdRes'><td class="sblockLbl"><b>[[Non-Standard_Residue|NonStd Res:]]</b></td><td class="sblockDat"><scene name='pdbligand=BRU:5-BROMO-2-DEOXYURIDINE-5-MONOPHOSPHATE'>BRU</scene>, <scene name='pdbligand=DU:2-DEOXYURIDINE-5-MONOPHOSPHATE'>DU</scene></td></tr> | + | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=BRU:5-BROMO-2-DEOXYURIDINE-5-MONOPHOSPHATE'>BRU</scene>, <scene name='pdbligand=CPQ:N,N-BIS(3-D-GLUCONAMIDOPROPYL)DEOXYCHOLAMIDE'>CPQ</scene>, <scene name='pdbligand=DIO:1,4-DIETHYLENE+DIOXIDE'>DIO</scene>, <scene name='pdbligand=GOL:GLYCEROL'>GOL</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene></td></tr> |
| - | <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[4tu8|4tu8]], [[4tu9|4tu9]]</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=4tu7 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4tu7 OCA], [https://pdbe.org/4tu7 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4tu7 RCSB], [https://www.ebi.ac.uk/pdbsum/4tu7 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4tu7 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=4tu7 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4tu7 OCA], [http://pdbe.org/4tu7 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=4tu7 RCSB], [http://www.ebi.ac.uk/pdbsum/4tu7 PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=4tu7 ProSAT]</span></td></tr> | + | |
| | </table> | | </table> |
| | == Function == | | == Function == |
| - | [[http://www.uniprot.org/uniprot/U2AF2_HUMAN U2AF2_HUMAN]] Necessary for the splicing of pre-mRNA. Induces cardiac troponin-T (TNNT2) pre-mRNA exon inclusion in muscle. Regulates the TNNT2 exon 5 inclusion through competition with MBNL1. Binds preferentially to a single-stranded structure within the polypyrimidine tract of TNNT2 intron 4 during spliceosome assembly. Required for the export of mRNA out of the nucleus, even if the mRNA is encoded by an intron-less gene. Represses the splicing of MAPT/Tau exon 10.<ref>PMID:15009664</ref> <ref>PMID:19470458</ref> <ref>PMID:19574390</ref> | + | [https://www.uniprot.org/uniprot/U2AF2_HUMAN U2AF2_HUMAN] Necessary for the splicing of pre-mRNA. Induces cardiac troponin-T (TNNT2) pre-mRNA exon inclusion in muscle. Regulates the TNNT2 exon 5 inclusion through competition with MBNL1. Binds preferentially to a single-stranded structure within the polypyrimidine tract of TNNT2 intron 4 during spliceosome assembly. Required for the export of mRNA out of the nucleus, even if the mRNA is encoded by an intron-less gene. Represses the splicing of MAPT/Tau exon 10.<ref>PMID:15009664</ref> <ref>PMID:19470458</ref> <ref>PMID:19574390</ref> |
| | <div style="background-color:#fffaf0;"> | | <div style="background-color:#fffaf0;"> |
| | == Publication Abstract from PubMed == | | == Publication Abstract from PubMed == |
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| | __TOC__ | | __TOC__ |
| | </StructureSection> | | </StructureSection> |
| - | [[Category: Agrawal, A A]] | + | [[Category: Homo sapiens]] |
| - | [[Category: Jenkins, J L]] | + | [[Category: Large Structures]] |
| - | [[Category: Kielkopf, C L]] | + | [[Category: Synthetic construct]] |
| - | [[Category: Pre-mrna splicing factor]] | + | [[Category: Agrawal AA]] |
| - | [[Category: Rna binding protein-dna complex]] | + | [[Category: Jenkins JL]] |
| - | [[Category: Rna recognition motif]] | + | [[Category: Kielkopf CL]] |
| Structural highlights
4tu7 is a 4 chain structure with sequence from Homo sapiens and Synthetic construct. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
| | Method: | X-ray diffraction, Resolution 2.087Å |
| Ligands: | , , , , |
| Resources: | FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT |
Function
U2AF2_HUMAN Necessary for the splicing of pre-mRNA. Induces cardiac troponin-T (TNNT2) pre-mRNA exon inclusion in muscle. Regulates the TNNT2 exon 5 inclusion through competition with MBNL1. Binds preferentially to a single-stranded structure within the polypyrimidine tract of TNNT2 intron 4 during spliceosome assembly. Required for the export of mRNA out of the nucleus, even if the mRNA is encoded by an intron-less gene. Represses the splicing of MAPT/Tau exon 10.[1] [2] [3]
Publication Abstract from PubMed
Purine interruptions of polypyrimidine (Py) tract splice site signals contribute to human genetic diseases. The essential splicing factor U2AF65 normally recognizes a Py tract consensus sequence preceding the major class of 3' splice sites. We found that neurofibromatosis- or retinitis pigmentosa-causing mutations in the 5' regions of Py tracts severely reduce U2AF65 affinity. Conversely, we identified a preferred binding site of U2AF65 for purine substitutions in the 3' regions of Py tracts. Based on a comparison of new U2AF65 structures bound to either A- or G-containing Py tracts with previously identified pyrimidine-containing structures, we expected to find that a D231V amino acid change in U2AF65 would specify U over other nucleotides. We found that the crystal structure of the U2AF65-D231V variant confirms favorable packing between the engineered valine and a target uracil base. The D231V amino acid change restores U2AF65 affinity for two mutated splice sites that cause human genetic diseases and successfully promotes splicing of a defective retinitis pigmentosa-causing transcript. We conclude that reduced U2AF65 binding is a molecular consequence of disease-relevant mutations, and that a structure-guided U2AF65 variant is capable of manipulating gene expression in eukaryotic cells.
Structure-guided U2AF65 variant improves recognition and splicing of a defective pre-mRNA.,Agrawal AA, McLaughlin KJ, Jenkins JL, Kielkopf CL Proc Natl Acad Sci U S A. 2014 Nov 24. pii: 201412743. PMID:25422459[4]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
References
- ↑ Wang J, Gao QS, Wang Y, Lafyatis R, Stamm S, Andreadis A. Tau exon 10, whose missplicing causes frontotemporal dementia, is regulated by an intricate interplay of cis elements and trans factors. J Neurochem. 2004 Mar;88(5):1078-90. PMID:15009664
- ↑ Warf MB, Diegel JV, von Hippel PH, Berglund JA. The protein factors MBNL1 and U2AF65 bind alternative RNA structures to regulate splicing. Proc Natl Acad Sci U S A. 2009 Jun 9;106(23):9203-8. doi:, 10.1073/pnas.0900342106. Epub 2009 May 26. PMID:19470458 doi:10.1073/pnas.0900342106
- ↑ Webby CJ, Wolf A, Gromak N, Dreger M, Kramer H, Kessler B, Nielsen ML, Schmitz C, Butler DS, Yates JR 3rd, Delahunty CM, Hahn P, Lengeling A, Mann M, Proudfoot NJ, Schofield CJ, Bottger A. Jmjd6 catalyses lysyl-hydroxylation of U2AF65, a protein associated with RNA splicing. Science. 2009 Jul 3;325(5936):90-3. PMID:19574390 doi:325/5936/90
- ↑ Agrawal AA, McLaughlin KJ, Jenkins JL, Kielkopf CL. Structure-guided U2AF65 variant improves recognition and splicing of a defective pre-mRNA. Proc Natl Acad Sci U S A. 2014 Nov 24. pii: 201412743. PMID:25422459 doi:http://dx.doi.org/10.1073/pnas.1412743111
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