2r5z

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[[Image:2r5z.jpg|left|200px]]
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{{Seed}}
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[[Image:2r5z.png|left|200px]]
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{{STRUCTURE_2r5z| PDB=2r5z | SCENE= }}
{{STRUCTURE_2r5z| PDB=2r5z | SCENE= }}
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'''Structure of Scr/Exd complex bound to a DNA sequence derived from the fkh gene'''
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===Structure of Scr/Exd complex bound to a DNA sequence derived from the fkh gene===
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==Overview==
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The recognition of specific DNA-binding sites by transcription factors is a critical yet poorly understood step in the control of gene expression. Members of the Hox family of transcription factors bind DNA by making nearly identical major groove contacts via the recognition helices of their homeodomains. In vivo specificity, however, often depends on extended and unstructured regions that link Hox homeodomains to a DNA-bound cofactor, Extradenticle (Exd). Using a combination of structure determination, computational analysis, and in vitro and in vivo assays, we show that Hox proteins recognize specific Hox-Exd binding sites via residues located in these extended regions that insert into the minor groove but only when presented with the correct DNA sequence. Our results suggest that these residues, which are conserved in a paralog-specific manner, confer specificity by recognizing a sequence-dependent DNA structure instead of directly reading a specific DNA sequence.
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The line below this paragraph, {{ABSTRACT_PUBMED_17981120}}, adds the Publication Abstract to the page
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(as it appears on PubMed at http://www.pubmed.gov), where 17981120 is the PubMed ID number.
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{{ABSTRACT_PUBMED_17981120}}
==About this Structure==
==About this Structure==
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[[Category: Transcription regulation]]
[[Category: Transcription regulation]]
[[Category: Transcription/dna complex]]
[[Category: Transcription/dna complex]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun May 4 16:18:47 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Tue Jul 29 15:38:09 2008''

Revision as of 12:38, 29 July 2008

Image:2r5z.png

Template:STRUCTURE 2r5z

Structure of Scr/Exd complex bound to a DNA sequence derived from the fkh gene

Template:ABSTRACT PUBMED 17981120

About this Structure

2R5Z is a Protein complex structure of sequences from Drosophila melanogaster. Full crystallographic information is available from OCA.

Reference

Functional specificity of a Hox protein mediated by the recognition of minor groove structure., Joshi R, Passner JM, Rohs R, Jain R, Sosinsky A, Crickmore MA, Jacob V, Aggarwal AK, Honig B, Mann RS, Cell. 2007 Nov 2;131(3):530-43. PMID:17981120

Page seeded by OCA on Tue Jul 29 15:38:09 2008

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