1HJK

ALKALINE PHOSPHATASE MUTANT H331Q


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.3 Å
  • R-Value Free: 0.200 
  • R-Value Work: 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.Mol.Biol. 4: 618-622


  • 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: 
    • 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
    • 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
    • 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



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
ALKALINE PHOSPHATASE
A, B
449Escherichia coli (strain K12)Gene Names: phoA
EC: 3.1.3.1
Find proteins for P00634 (Escherichia coli (strain K12))
Go to UniProtKB:  P00634
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ZN
Query on ZN

Download SDF File 
Download CCD File 
A, B
ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
 Ligand Interaction
SO4
Query on SO4

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

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

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.3 Å
  • R-Value Free: 0.200 
  • R-Value Work: 0.177 
  • Space Group: I 2 2 2
Unit Cell:
Length (Å)Angle (°)
a = 195.520α = 90.00
b = 167.860β = 90.00
c = 77.030γ = 90.00
Software Package:
Software NamePurpose
X-PLORmodel building
X-PLORphasing
X-PLORrefinement
SANdata collection
SDMSdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

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