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| | ==Structure of the N-terminal HEAT Domain of Symplekin from D. melanogaster== | | ==Structure of the N-terminal HEAT Domain of Symplekin from D. melanogaster== |
| - | <StructureSection load='3gs3' size='340' side='right' caption='[[3gs3]], [[Resolution|resolution]] 2.40Å' scene=''> | + | <StructureSection load='3gs3' size='340' side='right'caption='[[3gs3]], [[Resolution|resolution]] 2.40Å' scene=''> |
| | == Structural highlights == | | == Structural highlights == |
| - | <table><tr><td colspan='2'>[[3gs3]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Drome Drome]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3GS3 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3GS3 FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[3gs3]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Drome Drome]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3GS3 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3GS3 FirstGlance]. <br> |
| - | </td></tr><tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">CG2097, Dmel_CG2097 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=7227 DROME])</td></tr> | + | </td></tr><tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">CG2097, Dmel_CG2097 ([https://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=7227 DROME])</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=3gs3 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3gs3 OCA], [http://pdbe.org/3gs3 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=3gs3 RCSB], [http://www.ebi.ac.uk/pdbsum/3gs3 PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=3gs3 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=3gs3 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3gs3 OCA], [https://pdbe.org/3gs3 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3gs3 RCSB], [https://www.ebi.ac.uk/pdbsum/3gs3 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3gs3 ProSAT]</span></td></tr> |
| | </table> | | </table> |
| | == Function == | | == Function == |
| - | [[http://www.uniprot.org/uniprot/SYMPK_DROME SYMPK_DROME]] Component of a protein complex required for cotranscriptional processing of 3'-ends of polyadenylated and histone pre-mRNA.<ref>PMID:18042462</ref> <ref>PMID:19450530</ref> | + | [[https://www.uniprot.org/uniprot/SYMPK_DROME SYMPK_DROME]] Component of a protein complex required for cotranscriptional processing of 3'-ends of polyadenylated and histone pre-mRNA.<ref>PMID:18042462</ref> <ref>PMID:19450530</ref> |
| | == Evolutionary Conservation == | | == Evolutionary Conservation == |
| | [[Image:Consurf_key_small.gif|200px|right]] | | [[Image:Consurf_key_small.gif|200px|right]] |
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| | </StructureSection> | | </StructureSection> |
| | [[Category: Drome]] | | [[Category: Drome]] |
| | + | [[Category: Large Structures]] |
| | [[Category: Kennedy, S A]] | | [[Category: Kennedy, S A]] |
| | [[Category: Redinbo, M R]] | | [[Category: Redinbo, M R]] |
| Structural highlights
Function
[SYMPK_DROME] Component of a protein complex required for cotranscriptional processing of 3'-ends of polyadenylated and histone pre-mRNA.[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 majority of eukaryotic pre-mRNAs are processed by 3'-end cleavage and polyadenylation, although in metazoa the replication-dependent histone mRNAs are processed by 3'-end cleavage but not polyadenylation. The macromolecular complex responsible for processing both canonical and histone pre-mRNAs contains the approximately 1160-residue protein Symplekin. Secondary-structural prediction algorithms identified putative HEAT domains in the 300 N-terminal residues of all Symplekins of known sequence. The structure and dynamics of this domain were investigated to begin elucidating the role Symplekin plays in mRNA maturation. The crystal structure of the Drosophila melanogaster Symplekin HEAT domain was determined to 2.4 A resolution with single-wavelength anomalous dispersion phasing methods. The structure exhibits five canonical HEAT repeats along with an extended 31-amino-acid loop (loop 8) between the fourth and fifth repeat that is conserved within closely related Symplekin sequences. Molecular dynamics simulations of this domain show that the presence of loop 8 dampens correlated and anticorrelated motion in the HEAT domain, therefore providing a neutral surface for potential protein-protein interactions. HEAT domains are often employed for such macromolecular contacts. The Symplekin HEAT region not only structurally aligns with several established scaffolding proteins, but also has been reported to contact proteins essential for regulating 3'-end processing. Together, these data support the conclusion that the Symplekin HEAT domain serves as a scaffold for protein-protein interactions essential to the mRNA maturation process.
Crystal structure of the HEAT domain from the Pre-mRNA processing factor Symplekin.,Kennedy SA, Frazier ML, Steiniger M, Mast AM, Marzluff WF, Redinbo MR J Mol Biol. 2009 Sep 11;392(1):115-28. Epub 2009 Jul 1. PMID:19576221[3]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
See Also
References
- ↑ Wagner EJ, Burch BD, Godfrey AC, Salzler HR, Duronio RJ, Marzluff WF. A genome-wide RNA interference screen reveals that variant histones are necessary for replication-dependent histone pre-mRNA processing. Mol Cell. 2007 Nov 30;28(4):692-9. PMID:18042462 doi:10.1016/j.molcel.2007.10.009
- ↑ Sullivan KD, Steiniger M, Marzluff WF. A core complex of CPSF73, CPSF100, and Symplekin may form two different cleavage factors for processing of poly(A) and histone mRNAs. Mol Cell. 2009 May 15;34(3):322-32. doi: 10.1016/j.molcel.2009.04.024. PMID:19450530 doi:10.1016/j.molcel.2009.04.024
- ↑ Kennedy SA, Frazier ML, Steiniger M, Mast AM, Marzluff WF, Redinbo MR. Crystal structure of the HEAT domain from the Pre-mRNA processing factor Symplekin. J Mol Biol. 2009 Sep 11;392(1):115-28. Epub 2009 Jul 1. PMID:19576221 doi:10.1016/j.jmb.2009.06.062
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