4p6q

From Proteopedia

(Difference between revisions)

Revision as of 13:21, 4 August 2016

The crystal structure of the Split End protein SHARP adds a new layer of complexity to proteins containing RNA Recognition Motifs

Structural highlights

4p6q is a 1 chain structure. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Ligands:
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

[MINT_HUMAN] May serve as a nuclear matrix platform that organizes and integrates transcriptional responses. In osteoblasts, supports transcription activation: synergizes with RUNX2 to enhance FGFR2-mediated activation of the osteocalcin FGF-responsive element (OCFRE) (By similarity). Has also been shown to be an essential corepressor protein, which probably regulates different key pathways such as the Notch pathway. Negative regulator of the Notch pathway via its interaction with RBPSUH, which prevents the association between NOTCH1 and RBPSUH, and therefore suppresses the transactivation activity of Notch signaling. Blocks the differentiation of precursor B-cells into marginal zone B-cells. Probably represses transcription via the recruitment of large complexes containing histone deacetylase proteins. May bind both to DNA and RNA.^[1] ^[2]

Publication Abstract from PubMed

The Split Ends (SPEN) protein was originally discovered in Drosophila in the late 1990s. Since then, homologous proteins have been identified in eukaryotic species ranging from plants to humans. Every family member contains three predicted RNA recognition motifs (RRMs) in the N-terminal region of the protein. We have determined the crystal structure of the region of the human SPEN homolog that contains these RRMs-the SMRT/HDAC1 Associated Repressor Protein (SHARP), at 2.0 A resolution. SHARP is a co-regulator of the nuclear receptors. We demonstrate that two of the three RRMs, namely RRM3 and RRM4, interact via a highly conserved interface. Furthermore, we show that the RRM3-RRM4 block is the main platform mediating the stable association with the H12-H13 substructure found in the steroid receptor RNA activator (SRA), a long, non-coding RNA previously shown to play a crucial role in nuclear receptor transcriptional regulation. We determine that SHARP association with SRA relies on both single- and double-stranded RNA sequences. The crystal structure of the SHARP-RRM fragment, together with the associated RNA-binding studies, extend the repertoire of nucleic acid binding properties of RRM domains suggesting a new hypothesis for a better understanding of SPEN protein functions.

The crystal structure of the Split End protein SHARP adds a new layer of complexity to proteins containing RNA recognition motifs.,Arieti F, Gabus C, Tambalo M, Huet T, Round A, Thore S Nucleic Acids Res. 2014 Apr 19. PMID:24748666^[3]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

References

↑ Shi Y, Downes M, Xie W, Kao HY, Ordentlich P, Tsai CC, Hon M, Evans RM. Sharp, an inducible cofactor that integrates nuclear receptor repression and activation. Genes Dev. 2001 May 1;15(9):1140-51. PMID:11331609 doi:http://dx.doi.org/10.1101/gad.871201
↑ Oswald F, Kostezka U, Astrahantseff K, Bourteele S, Dillinger K, Zechner U, Ludwig L, Wilda M, Hameister H, Knochel W, Liptay S, Schmid RM. SHARP is a novel component of the Notch/RBP-Jkappa signalling pathway. EMBO J. 2002 Oct 15;21(20):5417-26. PMID:12374742
↑ Arieti F, Gabus C, Tambalo M, Huet T, Round A, Thore S. The crystal structure of the Split End protein SHARP adds a new layer of complexity to proteins containing RNA recognition motifs. Nucleic Acids Res. 2014 Apr 19. PMID:24748666 doi:http://dx.doi.org/10.1093/nar/gku277

1 Structural highlights
2 Function
3 Publication Abstract from PubMed
4 References

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/4p6q"

@@ Line 1: / Line 1: @@
 ==The crystal structure of the Split End protein SHARP adds a new layer of complexity to proteins containing RNA Recognition Motifs==
 <StructureSection load='4p6q' size='340' side='right' caption='[[4p6q]], [[Resolution|resolution]] 2.00&Aring;' scene=''>
@@ Line 4: / Line 5: @@
 <table><tr><td colspan='2'>[[4p6q]] is a 1 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4P6Q OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4P6Q FirstGlance]. <br>
 </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene></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=4p6q FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4p6q OCA], [http://www.rcsb.org/pdb/explore.do?structureId=4p6q RCSB], [http://www.ebi.ac.uk/pdbsum/4p6q PDBsum]</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=4p6q FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4p6q OCA], [http://pdbe.org/4p6q PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=4p6q RCSB], [http://www.ebi.ac.uk/pdbsum/4p6q PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=4p6q ProSAT]</span></td></tr>
 </table>
 == Function ==
@@ Line 16: / Line 17: @@
 From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
 </div>
+<div class="pdbe-citations 4p6q" style="background-color:#fffaf0;"></div>
 == References ==
 <references/>

4p6q

From Proteopedia

Revision as of 13:21, 4 August 2016

The crystal structure of the Split End protein SHARP adds a new layer of complexity to proteins containing RNA Recognition Motifs

Structural highlights

Function

Publication Abstract from PubMed

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

Views

Personal tools

Navigation

Search

Toolbox