1B8J

ALKALINE PHOSPHATASE COMPLEXED WITH VANADATE


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.9 Å
  • R-Value Free: 0.196 
  • R-Value Work: 0.177 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

A model of the transition state in the alkaline phosphatase reaction.

Holtz, K.M.Stec, B.Kantrowitz, E.R.

(1999) J.Biol.Chem. 274: 8351-8354


  • PubMed Abstract: 
  • A high resolution crystal structure of Escherichia coli alkaline phosphatase in the presence of vanadate has been refined to 1.9 A resolution. The vanadate ion takes on a trigonal bipyramidal geometry and is covalently bound by the active site serine ...

    A high resolution crystal structure of Escherichia coli alkaline phosphatase in the presence of vanadate has been refined to 1.9 A resolution. The vanadate ion takes on a trigonal bipyramidal geometry and is covalently bound by the active site serine nucleophile. A coordinated water molecule occupies the axial position opposite the serine nucleophile, whereas the equatorial oxygen atoms of the vanadate ion are stabilized by interactions with both Arg-166 and the zinc metal ions of the active site. This structural complex supports the in-line displacement mechanism of phosphomonoester hydrolysis by alkaline phosphatase and provides a model for the proposed transition state in the enzyme-catalyzed reaction.


    Related Citations: 
    • 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
    • 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 Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, Massachusetts 02167, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
PROTEIN (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

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

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

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Download CCD File 
A, B
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
 Ligand Interaction
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
SVA
Query on SVA
A, B
L-PEPTIDE LINKINGC3 H7 N O7 VSER
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.9 Å
  • R-Value Free: 0.196 
  • R-Value Work: 0.177 
  • Space Group: I 2 2 2
Unit Cell:
Length (Å)Angle (°)
a = 195.410α = 90.00
b = 167.810β = 90.00
c = 76.520γ = 90.00
Software Package:
Software NamePurpose
X-PLORmodel building
SDMSdata reduction
SDMSdata scaling
X-PLORrefinement
SDMSdata collection
X-PLORphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1999-02-18
    Type: Initial release
  • Version 1.1: 2007-10-16
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Derived calculations, Version format compliance
  • Version 1.3: 2017-10-04
    Type: Refinement description