2IKS | pdb_00002iks

Crystal structure of N-terminal truncated DNA-binding transcriptional dual regulator from Escherichia coli K12

• PDB DOI: https://doi.org/10.2210/pdb2IKS/pdb

• Classification: TRANSCRIPTION
• Organism(s): Escherichia coli K-12
• Expression System: Escherichia coli
• Mutation(s): Yes 


• Deposited: 2006-10-02 Released: 2006-10-31 
• Deposition Author(s): Chang, C., Evdokimova, E., Kagan, O., Savchenko, A., Edwards, A.M., Joachimiak, A., Midwest Center for Structural Genomics (MCSG)

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.85 Å
• R-Value Free: 
  0.219 (Depositor), 0.219 (DCC) 
• R-Value Work: 
  0.180 (Depositor), 0.179 (DCC) 
• R-Value Observed: 
  0.182 (Depositor) 

Literature

Crystal structure of N-terminal truncated DNA-binding transcriptional dual regulator from Escherichia coli K12

Chang, C., Evdokimova, E., Kagan, O., Savchenko, A., Edwards, A.M., 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: 67.46 kDa 
• Atom Count: 4,827 
• Modeled Residue Count: 547 
• Deposited Residue Count: 586 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
DNA-binding transcriptional dual regulator	A, B	293	Escherichia coli K-12	Mutation(s): 4
UniProt
Find proteins for P0ACP1 (Escherichia coli (strain K12)) Explore P0ACP1  Go to UniProtKB:  P0ACP1

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: 1.85 Å
• R-Value Free:  0.219 (Depositor), 0.219 (DCC) 
• R-Value Work:  0.180 (Depositor), 0.179 (DCC) 
• R-Value Observed: 0.182 (Depositor) 

Space Group: C 1 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 152.931	α = 90
b = 41.829	β = 126.18
c = 110.674	γ = 90

Software Package:

Software Name	Purpose
REFMAC	refinement
SBC-Collect	data collection
HKL-2000	data reduction
HKL-2000	data scaling
HKL-3000	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2006-10-31 
Deposition Author(s): Chang, C., Evdokimova, E., Kagan, O., Savchenko, A., Edwards, A.M., Joachimiak, A., Midwest Center for Structural Genomics (MCSG)

Revision History  

• Version 1.0: 2006-10-31
  Type: Initial release
  
• Version 1.1: 2008-05-01
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Advisory, Refinement description, Source and taxonomy, Version format compliance
• Version 1.3: 2024-10-30
  Changes: Data collection, Database references, Derived calculations, Structure summary