1c7u: Difference between revisions

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[[Image:1c7u.gif|left|200px]]
{{Seed}}
[[Image:1c7u.png|left|200px]]


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{{STRUCTURE_1c7u|  PDB=1c7u  |  SCENE=  }}  
{{STRUCTURE_1c7u|  PDB=1c7u  |  SCENE=  }}  


'''Complex of the DNA binding core domain of the transcription factor MEF2A with a 20mer oligonucleotide'''
===Complex of the DNA binding core domain of the transcription factor MEF2A with a 20mer oligonucleotide===




==Overview==
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The solution structure of the 33 kDa complex between the dimeric DNA-binding core domain of the transcription factor MEF2A (residues 1-85) and a 20mer DNA oligonucleotide comprising the consensus sequence CTA(A/T)(4)TAG has been solved by NMR. The protein comprises two domains: a MADS-box (residues 1-58) and a MEF2S domain (residues 59-73). Recognition and specificity are achieved by interactions between the MADS-box and both the major and minor grooves of the DNA. A number of critical differences in protein-DNA contacts observed in the MEF2A-DNA complex and the DNA complexes of the related MADS-box transcription factors SRF and MCM1 provide a molecular explanation for modulation of sequence specificity and extent of DNA bending ( approximately 15 versus approximately 70 degrees ). The structure of the MEF2S domain is entirely different from that of the equivalent SAM domain in SRF and MCM1, accounting for the absence of cross-reactivity with other proteins that interact with these transcription factors.
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{{ABSTRACT_PUBMED_10835359}}


==About this Structure==
==About this Structure==
1C7U 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=1C7U OCA].  
1C7U is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1C7U OCA].  


==Reference==
==Reference==
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[[Category: Sam domain]]
[[Category: Sam domain]]
[[Category: Transcription factor]]
[[Category: Transcription factor]]
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Fri May  2 12:26:01 2008''
 
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Jun 30 20:20:03 2008''

Revision as of 17:20, 30 June 2008

File:1c7u.png

Template:STRUCTURE 1c7u

Complex of the DNA binding core domain of the transcription factor MEF2A with a 20mer oligonucleotide

Template:ABSTRACT PUBMED 10835359

About this Structure

1C7U is a Single protein structure of sequence from Homo sapiens. Full experimental information is available from OCA.

Reference

Solution structure of the MEF2A-DNA complex: structural basis for the modulation of DNA bending and specificity by MADS-box transcription factors., Huang K, Louis JM, Donaldson L, Lim FL, Sharrocks AD, Clore GM, EMBO J. 2000 Jun 1;19(11):2615-28. PMID:10835359

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