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2f8b

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Revision as of 05:33, 10 September 2015

NMR structure of the C-terminal domain (dimer) of HPV45 oncoprotein E7

Structural highlights

2f8b is a 2 chain structure with sequence from Hpv45. Full experimental information is available from OCA. For a guided tour on the structure components use FirstGlance.
Ligands:
Related:	2ewl
Gene:	E7 (HPV45)
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum

Function

[VE7_HPV45] E7 protein has both transforming and trans-activating activities. Disrupts the function of host retinoblastoma protein RB1/pRb, which is a key regulator of the cell cycle. Induces the disassembly of the E2F1 transcription factors from RB1, with subsequent transcriptional activation of E2F1-regulated S-phase genes. Inactivation of the ability of RB1 to arrest the cell cycle is critical for cellular transformation, uncontrolled cellular growth and proliferation induced by viral infection. Stimulation of progression from G1 to S phase allows the virus to efficiently use the cellular DNA replicating machinery to achieve viral genome replication. Interferes with histone deacetylation mediated by HDAC1 and HDAC2, leading to activation of transcription (By similarity).

Evolutionary Conservation

Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.

Publication Abstract from PubMed

The oncoprotein E7 of human papilloma viruses (HPV) is involved in the pathogenesis and maintenance of human cervical cancers. The most prevalent HPV types found in cervix carcinomas are HPV16, 18 and 45. The structure of the E7 dimer from HPV45 (PDB 2F8B) was determined by nuclear magnetic resonance spectroscopy. Each monomer comprises an unfolded N-terminus and a well-structured C-terminal domain with a beta1beta2alpha1beta3alpha2 topology representing a unique zinc-binding fold found only for E7. Dimerization occurs through the alpha1/alpha1' helices and intermolecular beta-sheet formation but excludes the zinc-binding sites. E7 is reported to interact with a number of cellular proteins (e.g. pRb, p21(CIP1)). Binding of a peptide derived from the C-terminus of p21(CIP1) to the C-terminal domain of E7 was characterized by monitoring chemical shift perturbations of the amide groups of E7. This provides direct evidence that a shallow groove situated between alpha1 and beta1 of the E7 C-terminal domain is interacting with the C-terminus of p21(CIP1). Intriguingly, this binding site overlaps with the low-affinity binding site on E7 for the C-domain of pRb.

Solution structure of the partially folded high-risk human papilloma virus 45 oncoprotein E7.,Ohlenschlager O, Seiboth T, Zengerling H, Briese L, Marchanka A, Ramachandran R, Baum M, Korbas M, Meyer-Klaucke W, Durst M, Gorlach M Oncogene. 2006 Sep 28;25(44):5953-9. Epub 2006 Apr 24. PMID:16636661^[1]

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

References

↑ Ohlenschlager O, Seiboth T, Zengerling H, Briese L, Marchanka A, Ramachandran R, Baum M, Korbas M, Meyer-Klaucke W, Durst M, Gorlach M. Solution structure of the partially folded high-risk human papilloma virus 45 oncoprotein E7. Oncogene. 2006 Sep 28;25(44):5953-9. Epub 2006 Apr 24. PMID:16636661

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

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/2f8b"

@@ Line 2: / Line 2: @@
 <StructureSection load='2f8b' size='340' side='right' caption='[[2f8b]], [[NMR_Ensembles_of_Models | 15 NMR models]]' scene=''>
 == Structural highlights ==
-<table><tr><td colspan='2'>[[2f8b]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Human_papillomavirus_type_45 Human papillomavirus type 45]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2F8B OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2F8B FirstGlance]. <br>
+<table><tr><td colspan='2'>[[2f8b]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Hpv45 Hpv45]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2F8B OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2F8B FirstGlance]. <br>
 </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=ZN:ZINC+ION'>ZN</scene></td></tr>
 <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[2ewl|2ewl]]</td></tr>
-<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">E7 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=10593 Human papillomavirus type 45])</td></tr>
+<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">E7 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=10593 HPV45])</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=2f8b FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2f8b OCA], [http://www.rcsb.org/pdb/explore.do?structureId=2f8b RCSB], [http://www.ebi.ac.uk/pdbsum/2f8b 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=2f8b FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2f8b OCA], [http://pdbe.org/2f8b PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=2f8b RCSB], [http://www.ebi.ac.uk/pdbsum/2f8b PDBsum]</span></td></tr>
 </table>
 == Function ==
@@ Line 28: / Line 28: @@
 From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
 </div>
+<div class="pdbe-citations 2f8b" style="background-color:#fffaf0;"></div>
 == References ==
 <references/>
 __TOC__
 </StructureSection>
-[[Category: Human papillomavirus type 45]]
+[[Category: Hpv45]]
 [[Category: Gorlach, M]]
 [[Category: Ohlenschlager, O]]

2f8b

From Proteopedia

Revision as of 05:33, 10 September 2015

NMR structure of the C-terminal domain (dimer) of HPV45 oncoprotein E7

Structural highlights

Function

Evolutionary Conservation

Publication Abstract from PubMed

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

Views

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