3BRU

Crystal structure of regulatory protein TetR from Rhodobacter sphaeroides

• PDB DOI: https://doi.org/10.2210/pdb3BRU/pdb

• Classification: TRANSCRIPTION
• Organism(s): Cereibacter sphaeroides 2.4.1
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 2007-12-21 Released: 2008-01-08 
• Deposition Author(s): Osipiuk, J., Maltseva, N., Freeman, L., Joachimiak, A., Midwest Center for Structural Genomics (MCSG)

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.30 Å
• R-Value Free: 
  0.201 (Depositor), 0.203 (DCC) 
• R-Value Work: 
  0.169 (Depositor), 0.169 (DCC) 
• R-Value Observed: 
  0.170 (Depositor) 

Literature

Crystal structure of regulatory protein TetR from Rhodobacter sphaeroides.

Osipiuk, J., Maltseva, N., Freeman, L., Joachimiak, A.

To be published.

Biological Assembly 1  

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

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

Macromolecule Content

• Total Structure Weight: 50 kDa 
• Atom Count: 3,182 
• Modelled Residue Count: 380 
• Deposited Residue Count: 444 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Regulatory protein, TetR family	A, B	222	Cereibacter sphaeroides 2.4.1	Mutation(s): 0  Gene Names: RSP_1435, RHOS4_00080
UniProt
Find proteins for Q3J6K8 (Cereibacter sphaeroides (strain ATCC 17023 / DSM 158 / JCM 6121 / CCUG 31486 / LMG 2827 / NBRC 12203 / NCIMB 8253 / ATH 2.4.1.)) Explore Q3J6K8  Go to UniProtKB:  Q3J6K8

Small Molecules

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: 2.30 Å
• R-Value Free:  0.201 (Depositor), 0.203 (DCC) 
• R-Value Work:  0.169 (Depositor), 0.169 (DCC) 
• R-Value Observed: 0.170 (Depositor) 

Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 63.416	α = 90
b = 82.564	β = 90
c = 91.316	γ = 90

Software Package:

Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
REFMAC	refinement
PDB_EXTRACT	data extraction
SBC-Collect	data collection
HKL-3000	data reduction
SHELXD	phasing
MLPHARE	phasing
DM	phasing
SOLVE	phasing
RESOLVE	phasing
HKL-3000	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2008-01-08 
Deposition Author(s): Osipiuk, J., Maltseva, N., Freeman, L., Joachimiak, A., Midwest Center for Structural Genomics (MCSG)

Revision History  

• Version 1.0: 2008-01-08
  Type: Initial release
  
• Version 1.1: 2011-07-13
  Changes: Advisory, Version format compliance
• Version 1.2: 2017-10-25
  Changes: Refinement description
• Version 1.3: 2024-10-09
  Changes: Data collection, Database references, Derived calculations, Structure summary