2ICP

Crystal structure of the bacterial antitoxin HigA from Escherichia coli at pH 4.0. Northeast Structural Genomics Consortium TARGET ER390.

• PDB DOI: https://doi.org/10.2210/pdb2ICP/pdb

• Classification: DNA BINDING PROTEIN
• Organism(s): Escherichia coli CFT073
• Expression System: Escherichia coli
• Mutation(s): Yes 


• Deposited: 2006-09-13 Released: 2006-09-26 
• Deposition Author(s): Arbing, M.A., Abashidze, M., Hurley, J.M., Zhao, L., Janjua, H., Cunningham, K., Ma, L.C., Xiao, R., Liu, J., Baran, M.C., Acton, T.B., Rost, B., Inouye, M., Woychik, N.A., Montelione, G.T., Hunt, J.F., Northeast Structural Genomics Consortium (NESG)

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.88 Å
• R-Value Free: 0.225 
• R-Value Work: 0.184 

Literature

Crystal structure of the bacterial antitoxin HigA from Escherichia coli.

Arbing, M.A., Abashidze, M., Hurley, J.M., Zhao, L., Janjua, H., Cunningham, K., Ma, L.C., Xiao, R., Liu, J., Baran, M.C., Acton, T.B., Rost, B., Inouye, M., Woychik, N.A., Montelione, G.T., Hunt, J.F.

To be published.

Biological Assembly 1  

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

Biological assembly 1 assigned by authors.

Biological Assembly 2  

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

Biological assembly 2 generated by PISA,PQS (software)

Macromolecule Content

• Total Structure Weight: 10.67 kDa 
• Atom Count: 747 
• Modelled Residue Count: 87 
• Deposited Residue Count: 94 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
antitoxin higa	A	94	Escherichia coli CFT073	Mutation(s): 5  Gene Names: higa
UniProt
Find proteins for P67700 (Escherichia coli O6:H1 (strain CFT073 / ATCC 700928 / UPEC)) Explore P67700  Go to UniProtKB:  P67700

Small Molecules

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

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

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.88 Å
• R-Value Free: 0.225 
• R-Value Work: 0.184 
• Space Group: C 1 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 83.127	α = 90
b = 23.526	β = 94.05
c = 41.593	γ = 90

Software Package:

Software Name	Purpose
CNS	refinement
SCALEPACK	data scaling
COMO	phasing
REFMAC	refinement
PDB_EXTRACT	data extraction
DENZO	data reduction

Structure Validation

Entry History 

Deposition Data

• Released Date: 2006-09-26 
Deposition Author(s): Arbing, M.A., Abashidze, M., Hurley, J.M., Zhao, L., Janjua, H., Cunningham, K., Ma, L.C., Xiao, R., Liu, J., Baran, M.C., Acton, T.B., Rost, B., Inouye, M., Woychik, N.A., Montelione, G.T., Hunt, J.F., Northeast Structural Genomics Consortium (NESG)

Revision History  

• Version 1.0: 2006-09-26
  Type: Initial release
  
• Version 1.1: 2008-05-01
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Derived calculations, Source and taxonomy, Version format compliance
• Version 1.3: 2017-10-18
  Changes: Refinement description
• Version 1.4: 2019-07-24
  Changes: Data collection, Derived calculations, Refinement description
• Version 1.5: 2024-10-30
  Changes: Data collection, Database references, Derived calculations, Structure summary