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1C7U

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

Summary for 1C7U
Entry DOI10.2210/pdb1c7u/pdb
Descriptor5'-D(*CP*TP*CP*GP*GP*CP*TP*AP*TP*TP*AP*AP*TP*AP*GP*CP*CP*GP*AP*G)-3', MYOCYTE-SPECIFIC ENHANCER FACTOR 2A, C4 FORM (2 entities in total)
Functional Keywordsdna binding protein, transcription factor, mads-box, sam domain, transcription-dna complex, transcription/dna
Biological sourceHomo sapiens (human)
Cellular locationNucleus: Q02078
Total number of polymer chains4
Total formula weight32282.93
Authors
Clore, G.M.,Huang, K. (deposition date: 2000-03-17, release date: 2000-03-27, Last modification date: 2023-12-27)
Primary citationHuang, K.,Louis, J.M.,Donaldson, L.,Lim, F.L.,Sharrocks, A.D.,Clore, G.M.
Solution structure of the MEF2A-DNA complex: structural basis for the modulation of DNA bending and specificity by MADS-box transcription factors
Embo J., 19:2615-2628, 2000
Cited by
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.
PubMed: 10835359
DOI: 10.1093/emboj/19.11.2615
PDB entries with the same primary citation
Experimental method
SOLUTION NMR
Structure validation

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数据于2025-07-23公开中

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