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==Crystal structure of human RPRD1B, carboxy-terminal domain==
==Crystal structure of human RPRD1B, carboxy-terminal domain==
<StructureSection load='4fla' size='340' side='right' caption='[[4fla]], [[Resolution|resolution]] 2.20&Aring;' scene=''>
<StructureSection load='4fla' size='340' side='right'caption='[[4fla]], [[Resolution|resolution]] 2.20&Aring;' scene=''>
== Structural highlights ==
== Structural highlights ==
<table><tr><td colspan='2'>[[4fla]] is a 4 chain structure with sequence from [http://en.wikipedia.org/wiki/Human Human]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4FLA OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4FLA FirstGlance]. <br>
<table><tr><td colspan='2'>[[4fla]] is a 4 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=4FLA OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4FLA FirstGlance]. <br>
</td></tr><tr><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=UNX:UNKNOWN+ATOM+OR+ION'>UNX</scene><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]] 2.2&#8491;</td></tr>
<tr><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">RPRD1B, C20orf77, CREPT ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 HUMAN])</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=UNX:UNKNOWN+ATOM+OR+ION'>UNX</scene></td></tr>
<tr><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4fla FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4fla OCA], [http://www.rcsb.org/pdb/explore.do?structureId=4fla RCSB], [http://www.ebi.ac.uk/pdbsum/4fla PDBsum]</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=4fla FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4fla OCA], [https://pdbe.org/4fla PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4fla RCSB], [https://www.ebi.ac.uk/pdbsum/4fla PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4fla ProSAT]</span></td></tr>
<table>
</table>
<div style="background-color:#fffaf0;">
== Function ==
== Publication Abstract from PubMed ==
[https://www.uniprot.org/uniprot/RPR1B_HUMAN RPR1B_HUMAN] Interacts with phosphorylated C-terminal heptapeptide repeat domain (CTD) of the largest RNA polymerase II subunit POLR2A, and participates in dephosphorylation of the CTD. Transcriptional regulator which enhances expression of CCND1. Promotes binding of RNA polymerase II to the CCDN1 promoter and to the termination region before the poly-A site but decreases its binding after the poly-A site. Prevents RNA polymerase II from reading through the 3' end termination site and may allow it to be recruited back to the promoter through promotion of the formation of a chromatin loop. Also enhances the transcription of a number of other cell cycle-related genes including CDK2, CDK4, CDK6 and cyclin-E but not CDKN1A, CDKN1B or cyclin-A. Promotes cell proliferation.<ref>PMID:22264791</ref> <ref>PMID:22231121</ref>  
The RNA polymerase II (RNAPII) C-terminal domain (CTD) heptapeptide repeats (1-YSPTSPS-7) undergo dynamic phosphorylation and dephosphorylation during the transcription cycle to recruit factors that regulate transcription, RNA processing and chromatin modification. We show here that RPRD1A and RPRD1B form homodimers and heterodimers through their coiled-coil domains and interact preferentially via CTD-interaction domains (CIDs) with RNAPII CTD repeats phosphorylated at S2 and S7. Crystal structures of the RPRD1A, RPRD1B and RPRD2 CIDs, alone and in complex with RNAPII CTD phosphoisoforms, elucidate the molecular basis of CTD recognition. In an example of cross-talk between different CTD modifications, our data also indicate that RPRD1A and RPRD1B associate directly with RPAP2 phosphatase and, by interacting with CTD repeats where phospho-S2 and/or phospho-S7 bracket a phospho-S5 residue, serve as CTD scaffolds to coordinate the dephosphorylation of phospho-S5 by RPAP2.
 
RPRD1A and RPRD1B are human RNA polymerase II C-terminal domain scaffolds for Ser5 dephosphorylation.,Ni Z, Xu C, Guo X, Hunter GO, Kuznetsova OV, Tempel W, Marcon E, Zhong G, Guo H, Kuo WH, Li J, Young P, Olsen JB, Wan C, Loppnau P, El Bakkouri M, Senisterra GA, He H, Huang H, Sidhu SS, Emili A, Murphy S, Mosley AL, Arrowsmith CH, Min J, Greenblatt JF Nat Struct Mol Biol. 2014 Jul 6. doi: 10.1038/nsmb.2853. PMID:24997600<ref>PMID:24997600</ref>
 
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
== References ==
== References ==
<references/>
<references/>
__TOC__
__TOC__
</StructureSection>
</StructureSection>
[[Category: Human]]
[[Category: Homo sapiens]]
[[Category: Arrowsmith, C H.]]
[[Category: Large Structures]]
[[Category: Bakkouri, M El.]]
[[Category: Arrowsmith CH]]
[[Category: Bountra, C.]]
[[Category: Bountra C]]
[[Category: Edwards, A M.]]
[[Category: Edwards AM]]
[[Category: Greenblatt, J F.]]
[[Category: El Bakkouri M]]
[[Category: Guo, X.]]
[[Category: Greenblatt JF]]
[[Category: Loppnau, P.]]
[[Category: Guo X]]
[[Category: Min, J.]]
[[Category: Loppnau P]]
[[Category: Ni, Z.]]
[[Category: Min J]]
[[Category: SGC, Structural Genomics Consortium.]]
[[Category: Ni Z]]
[[Category: Tempel, W.]]
[[Category: Tempel W]]
[[Category: Xu, C.]]
[[Category: Xu C]]
[[Category: Sgc]]
[[Category: Structural genomics consortium]]
[[Category: Transcription]]

Latest revision as of 14:17, 1 March 2024

Crystal structure of human RPRD1B, carboxy-terminal domainCrystal structure of human RPRD1B, carboxy-terminal domain

Structural highlights

4fla is a 4 chain structure with sequence from Homo sapiens. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Method:X-ray diffraction, Resolution 2.2Å
Ligands:
Resources:FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

RPR1B_HUMAN Interacts with phosphorylated C-terminal heptapeptide repeat domain (CTD) of the largest RNA polymerase II subunit POLR2A, and participates in dephosphorylation of the CTD. Transcriptional regulator which enhances expression of CCND1. Promotes binding of RNA polymerase II to the CCDN1 promoter and to the termination region before the poly-A site but decreases its binding after the poly-A site. Prevents RNA polymerase II from reading through the 3' end termination site and may allow it to be recruited back to the promoter through promotion of the formation of a chromatin loop. Also enhances the transcription of a number of other cell cycle-related genes including CDK2, CDK4, CDK6 and cyclin-E but not CDKN1A, CDKN1B or cyclin-A. Promotes cell proliferation.[1] [2]

References

  1. ↑ Lu D, Wu Y, Wang Y, Ren F, Wang D, Su F, Zhang Y, Yang X, Jin G, Hao X, He D, Zhai Y, Irwin DM, Hu J, Sung JJ, Yu J, Jia B, Chang Z. CREPT accelerates tumorigenesis by regulating the transcription of cell-cycle-related genes. Cancer Cell. 2012 Jan 17;21(1):92-104. doi: 10.1016/j.ccr.2011.12.016. PMID:22264791 doi:http://dx.doi.org/10.1016/j.ccr.2011.12.016
  2. ↑ Ni Z, Olsen JB, Guo X, Zhong G, Ruan ED, Marcon E, Young P, Guo H, Li J, Moffat J, Emili A, Greenblatt JF. Control of the RNA polymerase II phosphorylation state in promoter regions by CTD interaction domain-containing proteins RPRD1A and RPRD1B. Transcription. 2011 Sep-Oct;2(5):237-42. doi: 10.4161/trns.2.5.17803. PMID:22231121 doi:http://dx.doi.org/10.4161/trns.2.5.17803

4fla, resolution 2.20Å

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