1sz9

<table><tr><td colspan='2'>[[1sz9]] is a 3 chain structure with sequence from [http://en.wikipedia.org/wiki/Atcc_18824 Atcc 18824]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1SZ9 OCA]. For a <b>guided tour on the structure components</b> use [http://proteopedia.org/fgij/fg.htm?mol=1SZ9 FirstGlance]. <br>

</td></tr><tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat"><div style='overflow: auto; max-height: 3em;'>[[1sza|1sza]]</div></td></tr>

<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">PCF11, YDR228C, YD9934.13C ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=4932 ATCC 18824])</td></tr>

<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://proteopedia.org/fgij/fg.htm?mol=1sz9 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1sz9 OCA], [http://pdbe.org/1sz9 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1sz9 RCSB], [http://www.ebi.ac.uk/pdbsum/1sz9 PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=1sz9 ProSAT]</span></td></tr>

[[http://www.uniprot.org/uniprot/PCF11_YEAST PCF11_YEAST]] Component of the cleavage factor IA (CFIA) complex, which is involved in the endonucleolytic cleavage during polyadenylation-dependent pre-mRNA 3'-end formation and cooperates with cleavage factor NAB4/CFIB and the cleavage and polyadenylation factor (CPF) complex. Independently involved in RNA polymerase II transcript termination. Binds RNA. Seems to bridge RNA polymerase II and the native transcript and may be involved in dismantling the RNA polymerase II elongation complex.<ref>PMID:11344258</ref> <ref>PMID:15998810</ref>

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== Publication Abstract from PubMed ==

During transcription, RNA polymerase (Pol) II synthesizes eukaryotic messenger RNA. Transcription is coupled to RNA processing by the carboxy-terminal domain (CTD) of Pol II, which consists of up to 52 repeats of the sequence Tyr 1-Ser 2-Pro 3-Thr 4-Ser 5-Pro 6-Ser 7 (refs 1, 2). After phosphorylation, the CTD binds tightly to a conserved CTD-interacting domain (CID) present in the proteins Pcf11 and Nrd1, which are essential and evolutionarily conserved factors for polyadenylation-dependent and -independent 3'-RNA processing, respectively. Here we describe the structure of a Ser 2-phosphorylated CTD peptide bound to the CID domain of Pcf11. The CTD motif Ser 2-Pro 3-Thr 4-Ser 5 forms a beta-turn that binds to a conserved groove in the CID domain. The Ser 2 phosphate group does not make direct contact with the CID domain, but may be recognized indirectly because it stabilizes the beta-turn with an additional hydrogen bond. Iteration of the peptide structure results in a compact beta-spiral model of the CTD. The model suggests that, during the mRNA transcription-processing cycle, compact spiral regions in the CTD are unravelled and regenerated in a phosphorylation-dependent manner.

Recognition of RNA polymerase II carboxy-terminal domain by 3'-RNA-processing factors.,Meinhart A, Cramer P Nature. 2004 Jul 8;430(6996):223-6. PMID:15241417<ref>PMID:15241417</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>

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<div class="pdbe-citations 1sz9" style="background-color:#fffaf0;"></div>

[[Category: Atcc 18824]]

[[Category: Cramer, P]]

[[Category: Meinhart, A]]

[[Category: Arm repeat]]

[[Category: Transcription]]