3QKX

Crystal structure of a TetR-family transcriptional regulator (HI0893) from Haemophilus influenzae RD at 2.35 A resolution

• PDB DOI:  https://doi.org/10.2210/pdb3QKX/pdb

• Classification: Transcription regulator
• Organism(s): Haemophilus influenzae
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2011-02-01 Released: 2011-03-02 
• Deposition Author(s): Joint Center for Structural Genomics (JCSG)

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.35 Å
• R-Value Free: 0.248 
• R-Value Work: 0.223 
• R-Value Observed: 0.224 

Literature

Crystal structure of a TetR-family transcriptional regulator (HI0893) from Haemophilus influenzae RD at 2.35 A resolution

Joint Center for Structural Genomics (JCSG)

To be published.

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)

Biological Assembly Evidence: light scattering, gel filtration

Macromolecule Content

• Total Structure Weight: 45.7 kDa 
• Atom Count: 3,102 
• Modelled Residue Count: 364 
• Deposited Residue Count: 376 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Uncharacterized HTH-type transcriptional regulator HI_0893	A, B	188	Haemophilus influenzae	Mutation(s): 0  Gene Names: HI_0893
UniProt
Find proteins for P44923 (Haemophilus influenzae (strain ATCC 51907 / DSM 11121 / KW20 / Rd)) Explore P44923  Go to UniProtKB:  P44923

Small Molecules

Ligands 3 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
SO4	D [auth A], E [auth A], F [auth A], G [auth A], J [auth B], K [auth B], L [auth B], M [auth B]	SULFATE ION O4 S QAOWNCQODCNURD-UHFFFAOYSA-L
EDO	C [auth A], I [auth B]	1,2-ETHANEDIOL C2 H6 O2 LYCAIKOWRPUZTN-UHFFFAOYSA-N
CL	H [auth B]	CHLORIDE ION Cl VEXZGXHMUGYJMC-UHFFFAOYSA-M

Modified Residues  1 Unique
ID	Chains	Type	Formula	2D Diagram	Parent
MSE	A, B	L-PEPTIDE LINKING	C5 H11 N O2 Se		MET

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.35 Å
• R-Value Free: 0.248 
• R-Value Work: 0.223 
• R-Value Observed: 0.224 
• Space Group: P 6₂
• Diffraction Data: https://doi.org/10.18430/M33QKX

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 71.16	α = 90
b = 71.16	β = 90
c = 159.334	γ = 120

Software Package:

Software Name	Purpose
MolProbity	model building
PDB_EXTRACT	data extraction
SHELX	phasing
SHARP	phasing
SCALA	data scaling
REFMAC	refinement
MOSFLM	data reduction
SHELXD	phasing
autoSHARP	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2011-03-02 
Deposition Author(s): Joint Center for Structural Genomics (JCSG)

Revision History  

• Version 1.0: 2011-03-02
  Type: Initial release
  
• Version 1.1: 2011-07-13
  Changes: Version format compliance
• Version 1.2: 2011-07-20
  Changes: Structure summary
• Version 1.3: 2017-10-25
  Changes: Author supporting evidence, Refinement description
• Version 1.4: 2023-02-01
  Changes: Database references, Derived calculations