4KJL

Room Temperature N23PPS148A DHFR

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.38 Å
  • R-Value Free: 0.180 
  • R-Value Work: 0.150 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history. 

Literature

Automated identification of functional dynamic contact networks from X-ray crystallography.

van den Bedem, H., Bhabha, G., Yang, K., Wright, P.E., Fraser, J.S.

(2013) Nat.Methods 10: 896-902

  • DOI: 10.1038/nmeth.2592
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    • Protein function often depends on the exchange between conformational substates. Allosteric ligand binding or distal mutations can stabilize specific active-site conformations and consequently alter protein function. Observing alternative conformatio ...

    Protein function often depends on the exchange between conformational substates. Allosteric ligand binding or distal mutations can stabilize specific active-site conformations and consequently alter protein function. Observing alternative conformations at low levels of electron density, in addition to comparison of independently determined X-ray crystal structures, can provide mechanistic insights into conformational dynamics. Here we report a new algorithm, CONTACT, that identifies contact networks of conformationally heterogeneous residues directly from high-resolution X-ray crystallography data. Contact networks determined for Escherichia coli dihydrofolate reductase (ecDHFR) predict the observed long-range pattern of NMR chemical shift perturbations of an allosteric mutation. A comparison of contact networks in wild-type and mutant ecDHFR suggests that mutations that alter optimized contact networks of coordinated motions can impair catalytic function. CONTACT-guided mutagenesis can exploit the structure-dynamics-function relationship in protein engineering and design.

    Organizational Affiliation: 

    Joint Center for Structural Genomics, Stanford Synchrotron Radiation Lightsource, Stanford, California, USA. vdbedem@slac.stanford.edu




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Dihydrofolate reductase
A
160Escherichia coli (strain K12)Mutation(s): 2 
Gene Names: folA (tmrA)
EC: 1.5.1.3
Find proteins for P0ABQ4 (Escherichia coli (strain K12))
Go to UniProtKB:  P0ABQ4
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
NAP
Query on NAP
Download SDF File 
Download CCD File 
A
NADP NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE
2'-MONOPHOSPHOADENOSINE 5'-DIPHOSPHORIBOSE
C21 H28 N7 O17 P3
XJLXINKUBYWONI-NNYOXOHSSA-N
 Ligand Interaction
FOL
Query on FOL
Download SDF File 
Download CCD File 
A
FOLIC ACID
C19 H19 N7 O6
OVBPIULPVIDEAO-LBPRGKRZSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.38 Å
  • R-Value Free: 0.180 
  • R-Value Work: 0.150 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 34.640α = 90.00
b = 45.760β = 90.00
c = 98.710γ = 90.00
Software Package:
Software NamePurpose
XDSdata reduction
PHASERphasing
PHENIXrefinement
ELVESrefinement
SCALAdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots


View more in-depth experimental data

Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2013-08-21
    Type: Initial release
  • Version 1.1: 2013-09-11
    Type: Database references
  • Version 1.2: 2014-11-12
    Type: Structure summary
  • Version 1.3: 2017-11-15
    Type: Refinement description