2hu2

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{{STRUCTURE_2hu2| PDB=2hu2 | SCENE= }}
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'''CTBP/BARS in ternary complex with NAD(H) and RRTGAPPAL peptide'''
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===CTBP/BARS in ternary complex with NAD(H) and RRTGAPPAL peptide===
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==Overview==
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Numerous transcription factors recruit C-terminal binding protein (CtBP) corepressors. We show that the large zinc finger protein ZNF217 contacts CtBP. ZNF217 is encoded by an oncogene frequently amplified in tumors. ZNF217 contains a typical Pro-X-Asp-Leu-Ser (PXDLS) motif that binds in CtBP's PXDLS-binding cleft. However, ZNF217 also contains a second motif, Arg-Arg-Thr (RRT), that binds a separate surface on CtBP. The crystal structure of CtBP bound to an RRTGAPPAL peptide shows that it contacts a surface crevice distinct from the PXDLS binding cleft. Interestingly, both PXDLS and RRT motifs are also found in other zinc finger proteins, such as RIZ. Finally, we show that ZNF217 represses several promoters, including one from a known CtBP target gene, and mutations preventing ZNF217's contact with CtBP reduce repression. These results identify a new CtBP interaction motif and establish ZNF217 as a transcriptional repressor protein that functions, at least in part, by associating with CtBP.
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==About this Structure==
==About this Structure==
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[[Category: Transcription co-repressor]]
[[Category: Transcription co-repressor]]
[[Category: Zinc finger protein]]
[[Category: Zinc finger protein]]
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Revision as of 11:19, 29 July 2008

Image:2hu2.png

Template:STRUCTURE 2hu2

CTBP/BARS in ternary complex with NAD(H) and RRTGAPPAL peptide

Template:ABSTRACT PUBMED 16940172

About this Structure

2HU2 is a Protein complex structure of sequences from Rattus norvegicus. Full crystallographic information is available from OCA.

Reference

Specific recognition of ZNF217 and other zinc finger proteins at a surface groove of C-terminal binding proteins., Quinlan KG, Nardini M, Verger A, Francescato P, Yaswen P, Corda D, Bolognesi M, Crossley M, Mol Cell Biol. 2006 Nov;26(21):8159-72. Epub 2006 Aug 28. PMID:16940172

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