3F41

Structure of the tandemly repeated protein tyrosine phosphatase like phytase from Mitsuokella multacida


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.3 Å
  • R-Value Free: 0.254 
  • R-Value Work: 0.208 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Structural analysis of a multifunctional, tandemly repeated inositol polyphosphatase.

Gruninger, R.J.Selinger, L.B.Mosimann, S.C.

(2009) J.Mol.Biol. 392: 75-86

  • DOI: 10.1016/j.jmb.2009.05.079
  • Also Cited By: 4WU3

  • PubMed Abstract: 
  • Mitsuokella multacida expresses a unique inositol polyphosphatase (PhyAmm) that is composed of tandem repeats (TRs). Each repeat possesses a protein tyrosine phosphatase (PTP) active-site signature sequence and fold. Using a combination of structural ...

    Mitsuokella multacida expresses a unique inositol polyphosphatase (PhyAmm) that is composed of tandem repeats (TRs). Each repeat possesses a protein tyrosine phosphatase (PTP) active-site signature sequence and fold. Using a combination of structural, mutational, and kinetic studies, we show that the N-terminal (D1) and C-terminal (D2) active sites of the TR have diverged and possess significantly different specificities for inositol polyphosphate. Structural analysis and molecular docking calculations identify steric and electrostatic differences within the substrate binding pocket of each TR that may be involved in the altered substrate specificity. The implications of our results for the biological function of related PTP-like phytases are discussed. Finally, the structures and activities of PhyAmm and tandemly repeated receptor PTPs are compared and discussed. To our knowledge, this is the first example of an inositol phosphatase with tandem PTP domains possessing substrate specificity for different inositol phosphates.


    Organizational Affiliation

    Department of Chemistry and Biochemistry, University of Lethbridge, Alberta, Canada.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Phytase
A, B
629Mitsuokella multacidaMutation(s): 0 
Gene Names: phyA
EC: 3.1.3.8
Find proteins for A3QMF6 (Mitsuokella multacida)
Go to UniProtKB:  A3QMF6
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
PO4
Query on PO4

Download SDF File 
Download CCD File 
A, B
PHOSPHATE ION
O4 P
NBIIXXVUZAFLBC-UHFFFAOYSA-K
 Ligand Interaction
EDO
Query on EDO

Download SDF File 
Download CCD File 
A, B
1,2-ETHANEDIOL
ETHYLENE GLYCOL
C2 H6 O2
LYCAIKOWRPUZTN-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.3 Å
  • R-Value Free: 0.254 
  • R-Value Work: 0.208 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 74.391α = 90.00
b = 73.304β = 93.71
c = 161.310γ = 90.00
Software Package:
Software NamePurpose
ADSCdata collection
PDB_EXTRACTdata extraction
MOSFLMdata reduction
RESOLVEphasing
SCALAdata scaling
SOLVEphasing
CNSrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2009-06-09
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Version format compliance