2AR0

Crystal structure of Type I restriction enzyme EcoKI M protein (EC 2.1.1.72) (M.EcoKI)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.80 Å
  • R-Value Free: 0.261 
  • R-Value Work: 0.224 
  • R-Value Observed: 0.224 

Starting Model: experimental
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This is version 1.4 of the entry. See complete history


Literature

Crystal structure of Type I restriction enzyme EcoKI M protein (EC 2.1.1.72) (M.EcoKI).

Rajashankar, K.R.Kniewel, R.Lima, C.D.

To be published.

Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Type I restriction enzyme EcoKI M protein
A, B
541Escherichia coliMutation(s): 10 
Gene Names: hsdMhsm
EC: 2.1.1.72
UniProt
Find proteins for P08957 (Escherichia coli (strain K12))
Explore P08957 
Go to UniProtKB:  P08957
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP08957
Sequence Annotations
Expand
  • Reference Sequence
Small Molecules
Modified Residues  1 Unique
IDChains TypeFormula2D DiagramParent
MSE
Query on MSE
A, B
L-PEPTIDE LINKINGC5 H11 N O2 SeMET
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.80 Å
  • R-Value Free: 0.261 
  • R-Value Work: 0.224 
  • R-Value Observed: 0.224 
  • Space Group: P 41
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 105.427α = 90
b = 105.427β = 90
c = 138.279γ = 90
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
SOLVEphasing
CNSrefinement

Structure Validation

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Entry History 

Revision History  (Full details and data files)

  • Version 1.0: 2005-08-30
    Type: Initial release
  • Version 1.1: 2008-04-30
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2021-02-03
    Changes: Database references, Derived calculations, Structure summary
  • Version 1.4: 2024-04-03
    Changes: Data collection, Database references, Refinement description