1HJK

ALKALINE PHOSPHATASE MUTANT H331Q


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.30 Å
  • R-Value Free: 0.200 
  • R-Value Work: 0.177 
  • R-Value Observed: 0.177 

wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

Trapping and visualization of a covalent enzyme-phosphate intermediate.

Murphy, J.E.Stec, B.Ma, L.Kantrowitz, E.R.

(1997) Nat Struct Biol 4: 618-622

  • DOI: 10.1038/nsb0897-618
  • Primary Citation of Related Structures:  
    1HJK

  • PubMed Abstract: 
  • Using a mutant version of E. coli alkaline phosphatase, we succeeded in trapping and determining the structure of the phospho-enzyme intermediate. The X-ray structure also revealed the catalytic water molecule, bound to one of the active site zinc io ...

    Using a mutant version of E. coli alkaline phosphatase, we succeeded in trapping and determining the structure of the phospho-enzyme intermediate. The X-ray structure also revealed the catalytic water molecule, bound to one of the active site zinc ions, positioned ideally for the apical attack necessary for the hydrolysis of the intermediate.


    Related Citations: 
    • Mutations at Positions 153 and 328 in Escherichia Coli Alkaline Phosphatase Provide Insight Towards the Structure and Function of Mammalian and Yeast Alkaline Phosphatases
      Murphy, J.E., Tibbitts, T.T., Kantrowitz, E.R.
      (1995) J Mol Biol 253: 604
    • Kinetics and Crystal Structure of a Mutant Escherichia Coli Alkaline Phosphatase (Asp-369-->Asn): A Mechanism Involving One Zinc Per Active Site
      Tibbitts, T.T., Xu, X., Kantrowitz, E.R.
      (1994) Protein Sci 3: 2005
    • Reaction Mechanism of Alkaline Phosphatase Based on Crystal Structures. Two-Metal Ion Catalysis
      Kim, E.E., Wyckoff, H.W.
      (1991) J Mol Biol 218: 449

    Organizational Affiliation

    Department of Medical Biophysics, University of Toronto, Toronto, Canada.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
ALKALINE PHOSPHATASEAB449Escherichia coliMutation(s): 2 
Gene Names: phoA
EC: 3.1.3.1
Find proteins for P00634 (Escherichia coli (strain K12))
Explore P00634 
Go to UniProtKB:  P00634
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4

Download CCD File 
A, B
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
ZN
Query on ZN

Download CCD File 
A, B
ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
 Ligand Interaction
MG
Query on MG

Download CCD File 
A, B
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
 Ligand Interaction
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
SEP
Query on SEP
A,BL-PEPTIDE LINKINGC3 H8 N O6 PSER
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.30 Å
  • R-Value Free: 0.200 
  • R-Value Work: 0.177 
  • R-Value Observed: 0.177 
  • Space Group: I 2 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 195.52α = 90
b = 167.86β = 90
c = 77.03γ = 90
Software Package:
Software NamePurpose
SANdata collection
X-PLORmodel building
X-PLORrefinement
SDMSdata reduction
X-PLORphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1997-10-15
    Type: Initial release
  • Version 1.1: 2008-03-24
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2011-11-16
    Changes: Atomic model