6G0I

Active Fe-PP1


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.00 Å
  • R-Value Free: 0.233 
  • R-Value Work: 0.188 
  • R-Value Observed: 0.190 

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This is version 1.2 of the entry. See complete history


Literature

Effects of stably incorporated iron on protein phosphatase-1 structure and activity.

Salvi, F.Trebacz, M.Kokot, T.Hoermann, B.Rios, P.Barabas, O.Koehn, M.

(2018) FEBS Lett 592: 4028-4038

  • DOI: 10.1002/1873-3468.13284
  • Primary Citation of Related Structures:  
    6G0J, 6G0I

  • PubMed Abstract: 
  • Protein phosphatase-1 (PP1) drives a large amount of phosphoSer/Thr protein dephosphorylations in eukaryotes to counteract multiple kinases in signaling pathways. The phosphatase requires divalent metal cations for catalytic activity and contains iron naturally ...

    Protein phosphatase-1 (PP1) drives a large amount of phosphoSer/Thr protein dephosphorylations in eukaryotes to counteract multiple kinases in signaling pathways. The phosphatase requires divalent metal cations for catalytic activity and contains iron naturally. Iron has been suggested to have an influence on PP1 activity through Fe 2+ and Fe 3+ oxidation states. However, much biochemical and all structural data have been obtained with recombinant PP1 containing Mn 2+ ions. Purifying iron-containing PP1 from Escherichia coli has thus far not been possible. Here, we present the preparation, characterization, and structure of iron-bound PP1α in inactive and active states. We establish a key role for the electronic/redox properties of iron in PP1 activity and shed light on the difference in substrate specificity between iron- and manganese-containing PP1.


    Organizational Affiliation

    Faculty of Biology and Centre for Biological Signalling Studies (BIOSS), University of Freiburg, Germany.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Serine/threonine-protein phosphatase PP1-alpha catalytic subunitA331Homo sapiensMutation(s): 0 
Gene Names: PPP1CAPPP1A
EC: 3.1.3.16
UniProt & NIH Common Fund Data Resources
Find proteins for P62136 (Homo sapiens)
Explore P62136 
Go to UniProtKB:  P62136
PHAROS:  P62136
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
CSO
Query on CSO
AL-PEPTIDE LINKINGC3 H7 N O3 SCYS
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.00 Å
  • R-Value Free: 0.233 
  • R-Value Work: 0.188 
  • R-Value Observed: 0.190 
  • Space Group: P 2 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 38.365α = 90
b = 68.686β = 90
c = 126.995γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
PDB_EXTRACTdata extraction
XDSdata reduction
Aimlessdata scaling
PHASERphasing

Structure Validation

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Ligand Structure Quality Assessment  



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
ERCGermany336567

Revision History  (Full details and data files)

  • Version 1.0: 2018-11-21
    Type: Initial release
  • Version 1.1: 2019-01-02
    Changes: Data collection, Database references
  • Version 1.2: 2019-01-09
    Changes: Data collection, Database references