6O19 image
Entry Detail
PDB ID:
6O19
Keywords:
TRANSCRIPTION/DNA
Title:
Crystal Structure of Pho7 complex with pho1 promoter site 2
Biological Source:
Source Organism:
Schizosaccharomyces pombe
Host Organism:
Escherichia coli BL21(DE3)
PDB Version:
Deposition Date:
2019-02-18
Release Date:
2019-04-24
Method Details:
Experimental Method:
X-RAY DIFFRACTION
Resolution:
1.60 Å
R-Value Free:
0.20
R-Value Work:
0.18
R-Value Observed:
0.18
Space Group:
P 1 21 1
6O19 validation report
Macromolecular Entities
Protein Blast
Polymer Type:polypeptide(L)
Description:Transcription factor Pho7
Chain IDs:A
Chain Length:59
Number of Molecules:1
Biological Source:Schizosaccharomyces pombe
UniProt ID:O13658
Polymer Type:polydeoxyribonucleotide
Description:DNA (5'-D(*GP*TP*TP*TP*TP*TP*AP*AP*TP*TP*TP*CP*CP*GP*AP*AP*TP*AP*AP*T)-3')
Chain IDs:C (auth: B)
Chain Length:20
Number of Molecules:1
Biological Source:Schizosaccharomyces pombe
Polymer Type:polydeoxyribonucleotide
Description:DNA (5'-D(*TP*TP*AP*TP*TP*CP*GP*GP*AP*AP*AP*TP*TP*AP*AP*AP*AP*AP*CP*A)-3')
Chain IDs:B (auth: C)
Chain Length:20
Number of Molecules:1
Biological Source:Schizosaccharomyces pombe
Ligand Molecules
ZN
Primary Citation
Structure of Fission Yeast Transcription Factor Pho7 Bound topho1Promoter DNA and Effect of Pho7 Mutations on DNA Binding and Phosphate Homeostasis.
Mol.Cell.Biol. 39 ? ? (2019)
PMID: 31010807 DOI: 10.1128/MCB.00132-19

Abstact

Pho7 is the Schizosaccharomyces pombe fission yeast Zn2Cys6 transcriptional factor that drives a response to phosphate starvation in which phosphate acquisition genes are upregulated. Here we report a crystal structure at 1.6-Å resolution of the Pho7 DNA-binding domain (DBD) bound at its target site 2 in the pho1 promoter (5'-TCGGAAATTAAAAA). Comparison to the previously reported structure of Pho7 DBD in complex with its binding site in the tgp1 promoter (5'-TCGGACATTCAAAT) reveals shared determinants of target site specificity as well as variations in the protein-DNA interface that accommodate different promoter DNA sequences. Mutagenesis of Pho7 amino acids at the DNA interface identified nucleobase contacts at the periphery of the footprint that are essential for the induction of pho1 expression in response to phosphate starvation and for Pho7 binding to site 1 in the pho1 promoter.

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Protein

Chemical

Disease

Primary Citation of related structures
6E33