2i46: Difference between revisions

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[[Image:2i46.png|left|200px]]


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==Crystal structure of human TPP1==
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<StructureSection load='2i46' size='340' side='right'caption='[[2i46]], [[Resolution|resolution]] 2.70&Aring;' scene=''>
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== Structural highlights ==
or the SCENE parameter (which sets the initial scene displayed when the page is loaded),
<table><tr><td colspan='2'>[[2i46]] is a 2 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=2I46 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2I46 FirstGlance]. <br>
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</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.7&#8491;</td></tr>
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<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=2i46 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2i46 OCA], [https://pdbe.org/2i46 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2i46 RCSB], [https://www.ebi.ac.uk/pdbsum/2i46 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2i46 ProSAT]</span></td></tr>
{{STRUCTURE_2i46|  PDB=2i46  |  SCENE=  }}
</table>
 
== Function ==
===Crystal structure of human TPP1===
[https://www.uniprot.org/uniprot/ACD_HUMAN ACD_HUMAN] Component of the shelterin complex (telosome) that is involved in the regulation of telomere length and protection. Shelterin associates with arrays of double-stranded TTAGGG repeats added by telomerase and protects chromosome ends; without its protective activity, telomeres are no longer hidden from the DNA damage surveillance and chromosome ends are inappropriately processed by DNA repair pathways. Promotes binding of POT1 to single-stranded telomeric DNA. Modulates the inhibitory effects of POT1 on telomere elongation. The ACD-POT1 heterodimer enhances telomere elongation by increasing telomerase processivity. Plays a role in shelterin complex assembly. May play a role in organogenesis.<ref>PMID:15181449</ref> <ref>PMID:16166375</ref> <ref>PMID:16880378</ref> <ref>PMID:20231318</ref> <ref>PMID:17237768</ref>
 
== References ==
 
<references/>
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{{ABSTRACT_PUBMED_17237768}}
 
==About this Structure==
2I46 is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2I46 OCA].  
 
==Reference==
The POT1-TPP1 telomere complex is a telomerase processivity factor., Wang F, Podell ER, Zaug AJ, Yang Y, Baciu P, Cech TR, Lei M, Nature. 2007 Feb 1;445(7127):506-10. Epub 2007 Jan 21. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/17237768 17237768]
[[Category: Homo sapiens]]
[[Category: Homo sapiens]]
[[Category: Single protein]]
[[Category: Large Structures]]
[[Category: Baciu, P.]]
[[Category: Baciu P]]
[[Category: Cech, T R.]]
[[Category: Cech TR]]
[[Category: Else, T.]]
[[Category: Else T]]
[[Category: Hammer, G D.]]
[[Category: Hammer GD]]
[[Category: Lei, M.]]
[[Category: Lei M]]
[[Category: Podell, E R.]]
[[Category: Podell ER]]
[[Category: Wang, F.]]
[[Category: Wang F]]
[[Category: Yang, Y T.]]
[[Category: Yang YT]]
[[Category: Zaug, A J.]]
[[Category: Zaug AJ]]
[[Category: Ob fold]]
[[Category: Pot1 binding]]
[[Category: Tpp1]]
 
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Jul 28 08:51:58 2008''

Latest revision as of 12:01, 21 February 2024

Crystal structure of human TPP1Crystal structure of human TPP1

Structural highlights

2i46 is a 2 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 2.7Å
Resources:FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

ACD_HUMAN Component of the shelterin complex (telosome) that is involved in the regulation of telomere length and protection. Shelterin associates with arrays of double-stranded TTAGGG repeats added by telomerase and protects chromosome ends; without its protective activity, telomeres are no longer hidden from the DNA damage surveillance and chromosome ends are inappropriately processed by DNA repair pathways. Promotes binding of POT1 to single-stranded telomeric DNA. Modulates the inhibitory effects of POT1 on telomere elongation. The ACD-POT1 heterodimer enhances telomere elongation by increasing telomerase processivity. Plays a role in shelterin complex assembly. May play a role in organogenesis.[1] [2] [3] [4] [5]

References

  1. ↑ Liu D, Safari A, O'Connor MS, Chan DW, Laegeler A, Qin J, Songyang Z. PTOP interacts with POT1 and regulates its localization to telomeres. Nat Cell Biol. 2004 Jul;6(7):673-80. Epub 2004 Jun 6. PMID:15181449 doi:http://dx.doi.org/10.1038/ncb1142
  2. ↑ de Lange T. Shelterin: the protein complex that shapes and safeguards human telomeres. Genes Dev. 2005 Sep 15;19(18):2100-10. PMID:16166375 doi:10.1101/gad.1346005
  3. ↑ O'Connor MS, Safari A, Xin H, Liu D, Songyang Z. A critical role for TPP1 and TIN2 interaction in high-order telomeric complex assembly. Proc Natl Acad Sci U S A. 2006 Aug 8;103(32):11874-9. Epub 2006 Jul 31. PMID:16880378 doi:0605303103
  4. ↑ Zaug AJ, Podell ER, Nandakumar J, Cech TR. Functional interaction between telomere protein TPP1 and telomerase. Genes Dev. 2010 Mar 15;24(6):613-22. doi: 10.1101/gad.1881810. PMID:20231318 doi:10.1101/gad.1881810
  5. ↑ Wang F, Podell ER, Zaug AJ, Yang Y, Baciu P, Cech TR, Lei M. The POT1-TPP1 telomere complex is a telomerase processivity factor. Nature. 2007 Feb 1;445(7127):506-10. Epub 2007 Jan 21. PMID:17237768 doi:nature05454

2i46, resolution 2.70Å

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