2CX6

Crystal structure of ribonuclease inhibitor Barstar

• PDB DOI: https://doi.org/10.2210/pdb2CX6/pdb

• Classification: HYDROLASE INHIBITOR
• Organism(s): Escherichia coli O157:H7
• Expression System: Escherichia coli
• Mutation(s): Yes 


• Deposited: 2005-06-28 Released: 2005-12-28 
• Deposition Author(s): Murayama, K., Kawazoe, M., Shirouzu, M., Yokoyama, S., RIKEN Structural Genomics/Proteomics Initiative (RSGI)

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.43 Å
• R-Value Free: 0.295 
• R-Value Work: 0.229 
• R-Value Observed: 0.229 

Literature

Crystal structure of ribonuclease inhibitor Barstar

Murayama, K., Kawazoe, M., Shirouzu, M., Yokoyama, S.

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: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 2 assigned by authors.

Macromolecule Content

• Total Structure Weight: 21.81 kDa 
• Atom Count: 1,562 
• Modelled Residue Count: 180 
• Deposited Residue Count: 180 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Hypothetical protein yhcO	A, B	90	Escherichia coli O157:H7	Mutation(s): 2  Gene Names: yhcO
UniProt
Find proteins for P64618 (Escherichia coli O157:H7) Explore P64618  Go to UniProtKB:  P64618

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: 2.43 Å
• R-Value Free: 0.295 
• R-Value Work: 0.229 
• R-Value Observed: 0.229 
• Space Group: P 4₁ 2₁ 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 51.064	α = 90
b = 51.064	β = 90
c = 180.042	γ = 90

Software Package:

Software Name	Purpose
CNS	refinement
HKL-2000	data reduction
SCALEPACK	data scaling
SOLVE	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2005-12-28 
Deposition Author(s): Murayama, K., Kawazoe, M., Shirouzu, M., Yokoyama, S., RIKEN Structural Genomics/Proteomics Initiative (RSGI)

Revision History  

• Version 1.0: 2005-12-28
  Type: Initial release
  
• Version 1.1: 2008-04-30
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Source and taxonomy, Version format compliance