2HTS | pdb_00002hts

CRYSTAL STRUCTURE OF THE DNA BINDING DOMAIN OF THE HEAT SHOCK TRANSCRIPTION FACTOR

• PDB DOI: https://doi.org/10.2210/pdb2HTS/pdb

• Classification: TRANSCRIPTION FACTOR
• Organism(s): Kluyveromyces lactis
• Mutation(s): No 


• Deposited: 1994-06-02 Released: 1995-02-07 
• Deposition Author(s): Harrison, C., Nelson, H.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.83 Å
• R-Value Free: 
  0.248 (Depositor) 
• R-Value Work: 
  0.187 (Depositor) 
• R-Value Observed: 
  0.187 (Depositor) 

Literature

Crystal structure of the DNA binding domain of the heat shock transcription factor.

Harrison, C.J., Bohm, A.A., Nelson, H.C.

(1994) Science 263: 224-227

• PubMed: 8284672 
• DOI: https://doi.org/10.1126/science.8284672
• Primary Citation Related Structures: 
  2HTS


• PubMed Abstract: 
  

  The structure of the DNA binding domain, determined at 1.8 angstrom resolution, contains a three-helix bundle that is capped by a four-stranded antiparallel beta sheet. This structure is a variant of the helix-turn-helix motif, typified by catabolite activator protein. In the heat shock transcription factor, the first helix of the motif (alpha 2) has an alpha-helical bulge and a proline-induced kink. The angle between the two helices of the motif (alpha 2 and alpha 3) is about 20 degrees smaller than the average for canonical helix-turn-helix proteins. Nevertheless, the relative positions of the first and third helices of the bundle (alpha 1 and alpha 3) are conserved. It is proposed here that the first helix of the three-helix bundle be considered a component of the helix-turn-helix motif.

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Organizational Affiliation: 
• Department of Molecular and Cell Biology, University of California, Berkeley 94720.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors.

Macromolecule Content 

• Total Structure Weight: 11.07 kDa 
• Atom Count: 833 
• Modeled Residue Count: 88 
• Deposited Residue Count: 92 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
HEAT-SHOCK TRANSCRIPTION FACTOR	A	92	Kluyveromyces lactis	Mutation(s): 0
UniProt
Find proteins for P22121 (Kluyveromyces lactis (strain ATCC 8585 / CBS 2359 / DSM 70799 / NBRC 1267 / NRRL Y-1140 / WM37)) Explore P22121  Go to UniProtKB:  P22121

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
ACY	B [auth A], C [auth A]	ACETIC ACID C2 H4 O2 QTBSBXVTEAMEQO-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.83 Å
• R-Value Free:  0.248 (Depositor) 
• R-Value Work:  0.187 (Depositor) 
• R-Value Observed: 0.187 (Depositor) 

Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 36.8	α = 90
b = 34.3	β = 90
c = 67	γ = 90

Software Package:

Software Name	Purpose
X-PLOR	model building
X-PLOR	refinement
X-PLOR	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 1995-02-07 
Deposition Author(s): Harrison, C., Nelson, H.

Revision History  

• Version 1.0: 1995-02-07
  Type: Initial release
  
• Version 1.1: 2008-03-24
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2024-02-14
  Changes: Data collection, Database references, Derived calculations, Other