7DCU

Crystal structure of HSF2 DNA-binding domain in complex with 3-site HSE DNA (21 bp)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.75 Å
  • R-Value Free: 0.205 
  • R-Value Work: 0.172 
  • R-Value Observed: 0.174 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Structures of heat shock factor trimers bound to DNA.

Feng, N.Feng, H.Wang, S.Punekar, A.S.Ladenstein, R.Wang, D.C.Zhang, Q.Ding, J.Liu, W.

(2021) iScience 24: 102951-102951

  • DOI: 10.1016/j.isci.2021.102951
  • Primary Citation of Related Structures:  
    7DCT, 7DCU, 7DCS, 7DCJ

  • PubMed Abstract: 
  • Heat shock factor 1 (HSF1) and 2 (HSF2) play distinct but overlapping regulatory roles in maintaining cellular proteostasis or mediating cell differentiation and development. Upon activation, both HSFs trimerize and bind to heat shock elements (HSEs) present in the promoter region of target genes ...

    Heat shock factor 1 (HSF1) and 2 (HSF2) play distinct but overlapping regulatory roles in maintaining cellular proteostasis or mediating cell differentiation and development. Upon activation, both HSFs trimerize and bind to heat shock elements (HSEs) present in the promoter region of target genes. Despite structural insights gained from recent studies, structures reflecting the physiological architecture of this transcriptional machinery remains to be determined. Here, we present co-crystal structures of human HSF1 and HSF2 trimers bound to DNA, which reveal a triangular arrangement of the three DNA-binding domains (DBDs) with protein-protein interactions largely mediated by the wing domain. Two structural properties, different flexibility of the wing domain and local DNA conformational changes induced by HSF binding, seem likely to contribute to the subtle differential specificity between HSF1 and HSF2. Besides, two more structures showing DBDs bound to "two-site" head-to-head HSEs were determined as additions to the published tail-to-tail dimer-binding structures.


    Organizational Affiliation

    Institute of Immunology, Army Medical University, Chongqing 400038, China.



Macromolecules

Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Heat shock factor protein 2A, B, C113Homo sapiensMutation(s): 0 
Gene Names: HSF2HSTF2
UniProt & NIH Common Fund Data Resources
Find proteins for Q03933 (Homo sapiens)
Explore Q03933 
Go to UniProtKB:  Q03933
PHAROS:  Q03933
Protein Feature View
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  • Reference Sequence
Find similar nucleic acids by:  (by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsLengthOrganismImage
DNA (5'-D(*TP*GP*CP*GP*TP*TP*CP*TP*AP*GP*AP*AP*TP*AP*TP*TP*CP*GP*CP*GP*G)-3')D21Homo sapiens
Protein Feature View
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  • Reference Sequence
Find similar nucleic acids by:  (by identity cutoff)  |  Structure
Entity ID: 3
MoleculeChainsLengthOrganismImage
DNA (5'-D(*AP*CP*CP*GP*CP*GP*AP*AP*TP*AP*TP*TP*CP*TP*AP*GP*AP*AP*CP*GP*C)-3')E21Homo sapiens
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
NA
Query on NA

Download Ideal Coordinates CCD File 
F [auth A], G [auth B], H [auth C]SODIUM ION
Na
FKNQFGJONOIPTF-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.75 Å
  • R-Value Free: 0.205 
  • R-Value Work: 0.172 
  • R-Value Observed: 0.174 
  • Space Group: P 2 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 46.64α = 90
b = 67.06β = 90
c = 139.65γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
PDB_EXTRACTdata extraction
HKL-2000data reduction
HKL-2000data scaling
PHENIXphasing

Structure Validation

View Full Validation Report




Entry History 

Deposition Data

  • Deposited Date: 2020-10-27 
  • Released Date: 2021-07-14 
  • Deposition Author(s): Feng, N., Liu, W.

Revision History  (Full details and data files)

  • Version 1.0: 2021-07-14
    Type: Initial release
  • Version 1.1: 2021-09-15
    Changes: Database references, Structure summary