2XQZ

Neutron structure of the perdeuterated Toho-1 R274N R276N double mutant beta-lactamase


Experimental Data Snapshot

  • Method: NEUTRON DIFFRACTION
  • Resolution: 2.1 Å
  • R-Value Free: 0.259 
  • R-Value Work: 0.225 

wwPDB Validation

Currently 2XQZ does not have a wwPDB validation report.


This is version 2.1 of the entry. See complete history

Literature

The Active Site Protonation States of Perdeuterated Toho-1 Beta-Lactamase Determined by Neutron Diffraction Support a Role for Glu166 as the General Base in Acylation.

Tomanicek, S.J.Wang, K.K.Weiss, K.L.Blakeley, M.P.Cooper, J.Chen, Y.Coates, L.

(2011) FEBS Lett. 585: 364

  • DOI: 10.1016/j.febslet.2010.12.017
  • Primary Citation of Related Structures:  2XR0

  • PubMed Abstract: 
  • Room temperature neutron diffraction data of the fully perdeuterated Toho-1 R274N/R276N double mutant β-lactamase in the apo form were used to visualize deuterium atoms within the active site of the enzyme. This perdeuterated neutron structure of the ...

    Room temperature neutron diffraction data of the fully perdeuterated Toho-1 R274N/R276N double mutant β-lactamase in the apo form were used to visualize deuterium atoms within the active site of the enzyme. This perdeuterated neutron structure of the Toho-1 R274N/R276N reveals the clearest picture yet of the ground-state active site protonation states and the complete hydrogen-bonding network in a β-lactamase enzyme. The ground-state active site protonation states detailed in this neutron diffraction study are consistent with previous high-resolution X-ray studies that support the role of Glu166 as the general base during the acylation reaction in the class A β-lactamase reaction pathway.


    Organizational Affiliation

    Oak Ridge National Laboratory, Neutron Scattering Science Division, Oak Ridge, TN 37831, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
BETA-LACTAMSE TOHO-1
A
260Escherichia coliGene Names: bla
EC: 3.5.2.6
Find proteins for Q47066 (Escherichia coli)
Go to UniProtKB:  Q47066
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
DOD
Query on DOD

Download SDF File 
Download CCD File 
A
DEUTERATED WATER
D2 O
XLYOFNOQVPJJNP-ZSJDYOACSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: NEUTRON DIFFRACTION
  • Resolution: 2.1 Å
  • R-Value Free: 0.259 
  • R-Value Work: 0.225 
Software Package:
Software NamePurpose
LAUEGENdata scaling
PHENIXrefinement
LAUEGENdata reduction

Structure Validation

Currently 2XQZ does not have a wwPDB validation report.



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2010-12-22
    Type: Initial release
  • Version 2.0: 2017-12-27
    Type: Advisory, Atomic model, Derived calculations, Other
  • Version 2.1: 2018-01-31
    Type: Data collection