2NP7

Crystal structure of the adenine-specific DNA methyltransferase M.TaqI complexed with the cofactor analog AETA and a 10 bp DNA containing an abasic site analog at the target position and pyrrolo-dC at the target base partner position


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.90 Å
  • R-Value Free: 0.220 
  • R-Value Work: 0.177 
  • R-Value Observed: 0.179 

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Ligand Structure Quality Assessment 


This is version 1.3 of the entry. See complete history


Literature

Caught in the act II: Visualization of an intermediate in the DNA base-flipping pathway induced by the adenine-specific DNA methyltransferase M.TaqI

Lenz, T.Scheidig, A.J.Weinhold, E.

To be published.

Macromolecules

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Entity ID: 3
MoleculeChains Sequence LengthOrganismDetailsImage
Modification methylase TaqIC [auth A]421Thermus aquaticusMutation(s): 0 
Gene Names: taqIM
EC: 2.1.1.72
UniProt
Find proteins for P14385 (Thermus aquaticus)
Explore P14385 
Go to UniProtKB:  P14385
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP14385
Sequence Annotations
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  • Reference Sequence

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Entity ID: 1
MoleculeChains LengthOrganismImage
5'-D(*GP*TP*TP*CP*GP*(3DR)P*TP*GP*TP*C)-3'A [auth B]10N/A
Sequence Annotations
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  • Reference Sequence

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Entity ID: 2
MoleculeChains LengthOrganismImage
5'-D(*GP*AP*CP*AP*(4PC)P*CP*GP*(6MA)P*AP*C)-3'B [auth C]10N/A
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.90 Å
  • R-Value Free: 0.220 
  • R-Value Work: 0.177 
  • R-Value Observed: 0.179 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 60.21α = 90
b = 70.166β = 90
c = 114.947γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
ProDCdata collection
MAR345data collection
XDSdata scaling
MOLREPphasing

Structure Validation

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Ligand Structure Quality Assessment 


Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2007-11-13
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Non-polymer description, Version format compliance
  • Version 1.2: 2017-10-18
    Changes: Refinement description
  • Version 1.3: 2023-08-30
    Changes: Data collection, Database references, Derived calculations, Refinement description