3TM7

Processed Aspartate Decarboxylase Mutant with Asn72 mutated to Ala


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.7 Å
  • R-Value Free: 0.184 
  • R-Value Work: 0.160 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Structure of Escherichia coli aspartate alpha-decarboxylase Asn72Ala: probing the role of Asn72 in pyruvoyl cofactor formation

Webb, M.E.Lobley, C.M.Soliman, F.Kilkenny, M.L.Smith, A.G.Blundell, T.L.Abell, C.

(2012) Acta Crystallogr.,Sect.F 68: 414-417

  • DOI: 10.1107/S1744309112009487

  • PubMed Abstract: 
  • The crystal structure of the Asn72Ala site-directed mutant of Escherichia coli aspartate α-decarboxylase (ADC) has been determined at 1.7 Å resolution. The refined structure is consistent with the presence of a hydrolysis product serine in the active ...

    The crystal structure of the Asn72Ala site-directed mutant of Escherichia coli aspartate α-decarboxylase (ADC) has been determined at 1.7 Å resolution. The refined structure is consistent with the presence of a hydrolysis product serine in the active site in place of the pyruvoyl group required for catalysis, which suggests that the role of Asn72 is to protect the ester formed during ADC activation from hydrolysis. In previously determined structures of activated ADC, including the wild type and other site-directed mutants, the C-terminal region of the protein is disordered, but in the Asn72Ala mutant these residues are ordered owing to an interaction with the active site of the neighbouring symmetry-related multimer.


    Organizational Affiliation

    University Chemical Laboratory, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, England. m.e.webb@leeds.ac.uk




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Aspartate 1-decarboxylase beta chain
A, C
26Escherichia coli (strain K12)Mutation(s): 0 
Gene Names: panD
EC: 4.1.1.11
Find proteins for P0A790 (Escherichia coli (strain K12))
Go to UniProtKB:  P0A790
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Aspartate 1-decarboxylase alpha chain
B, D
102Escherichia coli (strain K12)Mutation(s): 1 
Gene Names: panD
EC: 4.1.1.11
Find proteins for P0A790 (Escherichia coli (strain K12))
Go to UniProtKB:  P0A790
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4

Download SDF File 
Download CCD File 
B, D
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.7 Å
  • R-Value Free: 0.184 
  • R-Value Work: 0.160 
  • Space Group: P 61 2 2
Unit Cell:
Length (Å)Angle (°)
a = 71.083α = 90.00
b = 71.083β = 90.00
c = 215.807γ = 120.00
Software Package:
Software NamePurpose
ADSCdata collection
CNSrefinement
DENZOdata reduction
SCALEPACKdata scaling
REFMACrefinement
CNSphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2012-04-11
    Type: Initial release
  • Version 1.1: 2012-05-23
    Type: Database references
  • Version 1.2: 2018-01-24
    Type: Structure summary