View source for 5dof


==Crystal structure of Tetrahymena p19==
<StructureSection load='5dof' size='340' side='right'caption='[[5dof]], [[Resolution|resolution]] 1.70&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[5dof]] is a 4 chain structure with sequence from [https://en.wikipedia.org/wiki/Tetrahymena_thermophila Tetrahymena thermophila]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5DOF OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=5DOF FirstGlance]. <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]] 1.7&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=MSE:SELENOMETHIONINE'>MSE</scene></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=5dof FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5dof OCA], [https://pdbe.org/5dof PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=5dof RCSB], [https://www.ebi.ac.uk/pdbsum/5dof PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=5dof ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/TAP19_TETTS TAP19_TETTS] Component of a CST-like subcomplex of the holoenzyme telomerase ribonucleoprotein complex, which stimulates telomerase complementary-strand synthesis (PubMed:26551074). Telomerase is an essential ribonucleoprotein enzyme that copies new telomeric repeats onto chromosome ends by repetitively synthesizing the short telomere-repeat sequence 5'-TTGGGG-3' using an RNA template component TER (PubMed:26551074). The CST-like subcomplex (also named 7-4-1) binds telomeric single-stranded DNA and coordinates telomere G-strand and C-strand synthesis (PubMed:26551074).<ref>PMID:26551074</ref> 
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
Tetrahymena telomerase holoenzyme subunits p75, p45 and p19 form a subcomplex (7-4-1) peripheral to the catalytic core. We report structures of p45 and p19 and reveal them as the Stn1 and Ten1 subunits of the CST complex, which stimulates telomerase complementary-strand synthesis. 7-4-1 binds telomeric single-stranded DNA, and mutant p19 overexpression causes telomere 3'-overhang elongation. We propose that telomerase-tethered Tetrahymena CST coordinates telomere G-strand and C-strand synthesis.

The Tetrahymena telomerase p75-p45-p19 subcomplex is a unique CST complex.,Wan B, Tang T, Upton H, Shuai J, Zhou Y, Li S, Chen J, Brunzelle JS, Zeng Z, Collins K, Wu J, Lei M Nat Struct Mol Biol. 2015 Nov 9. doi: 10.1038/nsmb.3126. PMID:26551074<ref>PMID:26551074</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 5dof" style="background-color:#fffaf0;"></div>

==See Also==
*[[P19|P19]]
*[[Telomerase-associated protein|Telomerase-associated protein]]
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Large Structures]]
[[Category: Tetrahymena thermophila]]
[[Category: Lei M]]
[[Category: Tang T]]
[[Category: Wan B]]
[[Category: Wu J]]