Biological Assembly 1  

Global Symmetry: Cyclic - C2  (3D View)
Global Stoichiometry: Homo 2-mer - A2 

Biological assembly 1 assigned by authors and generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 36.47 kDa 
• Atom Count: 2,265 
• Modelled Residue Count: 227 
• Deposited Residue Count: 286 
• Unique protein chains: 1
• Unique nucleic acid chains: 2

 5D5V

Crystal structure of human Hsf1 with Satellite III repeat DNA

• PDB DOI:  https://doi.org/10.2210/pdb5D5V/pdb
• NDB: 5D5V

• Classification: TRANSCRIPTION/DNA
• Organism(s): Homo sapiens
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 2015-08-11 Released: 2015-12-30 
• Deposition Author(s): Neudegger, T., Verghese, J., Hayer-Hartl, M., Hartl, F.U., Bracher, A.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.55 Å
• R-Value Free: 0.234 
• R-Value Work: 0.190 
• R-Value Observed: 0.192 

Literature

Structure of human heat-shock transcription factor 1 in complex with DNA.

Neudegger, T., Verghese, J., Hayer-Hartl, M., Hartl, F.U., Bracher, A.

(2016) Nat Struct Mol Biol 23: 140-146

• PubMed: 26727489 
• DOI: https://doi.org/10.1038/nsmb.3149
• Primary Citation of Related Structures:  
  5D5U, 5D5V, 5D5W, 5D5X, 5D5Y, 5D5Z, 5D60


• PubMed Abstract: 
  

Heat-shock transcription factor 1 (HSF1) has a central role in mediating the protective response to protein conformational stresses in eukaryotes. HSF1 consists of an N-terminal DNA-binding domain (DBD), a coiled-coil oligomerization domain, a regulatory domain and a transactivation domain. Upon stress, HSF1 trimerizes via its coiled-coil domain and binds to the promoters of heat shock protein-encoding genes. Here, we present cocrystal structures of the human HSF1 DBD in complex with cognate DNA. A comparative analysis of the HSF1 paralog Skn7 from Chaetomium thermophilum showed that single amino acid changes in the DBD can switch DNA binding specificity, thus revealing the structural basis for the interaction of HSF1 with cognate DNA. We used a crystal structure of the coiled-coil domain of C. thermophilum Skn7 to develop a model of the active human HSF1 trimer in which HSF1 embraces the heat-shock-element DNA.

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Organizational Affiliation: 

Department of Cellular Biochemistry, Max Planck Institute of Biochemistry, Martinsried, Germany.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Heat shock factor protein 1	A [auth B], B [auth D]	131	Homo sapiens	Mutation(s): 0  Gene Names: HSF1, HSTF1
UniProt & NIH Common Fund Data Resources
Find proteins for Q00613 (Homo sapiens) Explore Q00613  Go to UniProtKB:  Q00613
PHAROS:  Q00613

Entity ID: 2
Molecule	Chains	Length	Organism	Image
DNA	C [auth A]	12	Homo sapiens

Entity ID: 3
Molecule	Chains	Length	Organism	Image
DNA	D [auth C]	12	Homo sapiens

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
MG	E [auth B], F [auth D]	MAGNESIUM ION Mg JLVVSXFLKOJNIY-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.55 Å
• R-Value Free: 0.234 
• R-Value Work: 0.190 
• R-Value Observed: 0.192 
• Space Group: C 1 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 104.813	α = 90
b = 112.678	β = 92.56
c = 39.865	γ = 90

Software Package:

Software Name	Purpose
Aimless	data scaling
MOLREP	phasing
REFMAC	refinement
PDB_EXTRACT	data extraction
XDS	data reduction

Structure Validation

Entry History 

Deposition Data

• Released Date: 2015-12-30 
Deposition Author(s): Neudegger, T., Verghese, J., Hayer-Hartl, M., Hartl, F.U., Bracher, A.

Revision History  

• Version 1.0: 2015-12-30
  Type: Initial release
  
• Version 1.1: 2016-01-13
  Changes: Database references
• Version 1.2: 2016-01-20
  Changes: Structure summary
• Version 1.3: 2016-02-10
  Changes: Database references