7VOU image
Entry Detail
PDB ID:
7VOU
Keywords:
TRANSCRIPTION/DNA
Title:
The crystal structure of human forkhead box protein in complex with DNA 1
Biological Source:
Source Organism:
Homo sapiens
Host Organism:
Escherichia coli
PDB Version:
Deposition Date:
2021-10-14
Release Date:
2022-08-17
Method Details:
Experimental Method:
X-RAY DIFFRACTION
Resolution:
3.10 Å
R-Value Free:
0.28
R-Value Work:
0.22
R-Value Observed:
0.22
Space Group:
P 41 21 2
7VOU validation report
Macromolecular Entities
Polymer Type:polydeoxyribonucleotide
Description:DNA (5'-D(*AP*CP*TP*TP*GP*TP*TP*TP*AP*CP*AP*TP*TP*TP*TP*G)-3')
Chain IDs:A
Chain Length:16
Number of Molecules:1
Biological Source:Homo sapiens
Polymer Type:polydeoxyribonucleotide
Description:DNA (5'-D(*CP*AP*AP*AP*AP*TP*GP*TP*AP*AP*AP*CP*AP*AP*GP*T)-3')
Chain IDs:B
Chain Length:16
Number of Molecules:1
Biological Source:Homo sapiens
Protein Blast
Polymer Type:polypeptide(L)
Description:Forkhead box protein L2
Chain IDs:C
Chain Length:111
Number of Molecules:1
Biological Source:Homo sapiens
UniProt ID:P58012 Pfam ID:PF00250
Ligand Molecules
NA
Primary Citation
FOXL2 and FOXA1 cooperatively assemble on the TP53 promoter in alternative dimer configurations.
Nucleic Acids Res. 50 8929 8946 (2022)
PMID: 35920317 DOI: 10.1093/nar/gkac673

Abstact

Although both the p53 and forkhead box (FOX) family proteins are key transcription factors associated with cancer progression, their direct relationship is unknown. Here, we found that FOX family proteins bind to the non-canonical homotypic cluster of the p53 promoter region (TP53). Analysis of crystal structures of FOX proteins (FOXL2 and FOXA1) bound to the p53 homotypic cluster indicated that they interact with a 2:1 stoichiometry accommodated by FOX-induced DNA allostery. In particular, FOX proteins exhibited distinct dimerization patterns in recognition of the same p53-DNA; dimer formation of FOXA1 involved protein-protein interaction, but FOXL2 did not. Biochemical and biological functional analyses confirmed the cooperative binding of FOX proteins to the TP53 promoter for the transcriptional activation of TP53. In addition, up-regulation of TP53 was necessary for FOX proteins to exhibit anti-proliferative activity in cancer cells. These analyses reveal the presence of a discrete characteristic within FOX family proteins in which FOX proteins regulate the transcription activity of the p53 tumor suppressor via cooperative binding to the TP53 promoter in alternative dimer configurations.

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Primary Citation of related structures
7VOU