Macromolecule Content

• Total Structure Weight: 32282.93 
• Atom Count: 2038 
• Residue Count: 210 
• Unique protein chains: 1
• Unique nucleic acid chains: 1

1C7U

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

• DOI: 10.2210/pdb1C7U/pdb
• NDB: 1C7U

• Classification: TRANSCRIPTION/DNA
• Organism(s): Homo sapiens
• Expression System: Escherichia coli


• Deposited: 2000-03-17 Released: 2000-03-27 
• Deposition Author(s): Clore, G.M., Huang, K.

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Experimental Data Snapshot

• Method: SOLUTION NMR
• Conformers Calculated: 35 
• Conformers Submitted: 1 
• Selection Criteria: REGULARIZED MEAN STRUCTURE 

Literature

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, J.M., Donaldson, L., Lim, F.L., Sharrocks, A.D., Clore, G.M.

(2000) Embo J. 19: 2615-2628

• PubMed: 10835359 
• DOI: 10.1093/emboj/19.11.2615


• PubMed Abstract: 
  

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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Organizational Affiliation: 

Laboratory of Chemical Physics, Building 5, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD 20892-0510, USA.

Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details
MYOCYTE-SPECIFIC ENHANCER FACTOR 2A, C4 FORM	A, B	85	Homo sapiens	Mutation(s): 0  Gene Names: MEF2A (MEF2)
Find proteins for Q02078 (Homo sapiens) Go to Gene View: MEF2A Go to UniProtKB:  Q02078

Entity ID: 1
Molecule	Chains	Length	Organism
5'-D(*CP*TP*CP*GP*GP*CP*TP*AP*TP*TP*AP*AP*TP*AP*GP*CP*CP*GP*AP*G)-3'	C,D	20	N/A

Experimental Data & Validation

Experimental Data

• Method: SOLUTION NMR
• Conformers Calculated: 35 
• Conformers Submitted: 1 
• Selection Criteria: REGULARIZED MEAN STRUCTURE 

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2000-03-17 
• Released Date: 2000-03-27 
• Deposition Author(s): Clore, G.M., Huang, K.

Revision History 

• Version 1.0: 2000-03-27
  Type: Initial release
• Version 1.1: 2008-04-26
  Type: Version format compliance
• Version 1.2: 2011-07-13
  Type: Version format compliance