2JFR

Crystal structure of the PPM Ser-Thr phosphatase MsPP from Mycobacterium smegmatis in complex with phosphate at 0.83 A resolution


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 0.83 Å
  • R-Value Free: 0.124 
  • R-Value Observed: 0.095 

wwPDB Validation   3D Report Full Report


This is version 1.4 of the entry. See complete history


Literature

Insights Into the Mechanism of Ppm Ser/Thr Phosphatases from the Atomic Resolution Structures of a Mycobacterial Enzyme

Bellinzoni, M.Wehenkel, A.Shepard, W.Alzari, P.M.

(2007) Structure 15: 863

  • DOI: 10.1016/j.str.2007.06.002
  • Primary Citation of Related Structures:  
    2JFT, 2JFS, 2JFR

  • PubMed Abstract: 
  • Serine/threonine-specific phosphatases (PPs) represent, after protein tyrosine phosphatases, the second major class of enzymes that catalyze the dephosphorylation of proteins. They are classed in two large families, known as PPP and PPM, on the basis of sequence similarities, metal ion dependence, and inhibitor sensitivity ...

    Serine/threonine-specific phosphatases (PPs) represent, after protein tyrosine phosphatases, the second major class of enzymes that catalyze the dephosphorylation of proteins. They are classed in two large families, known as PPP and PPM, on the basis of sequence similarities, metal ion dependence, and inhibitor sensitivity. Despite their wide species distribution and broad physiological roles, the catalytic mechanism of PPM phosphatases has been primarily inferred from studies of a single enzyme, human PP2Calpha. Here, we report the biochemical characterization and the atomic resolution structures of a soluble PPM phosphatase from the saprophyte Mycobacterium smegmatis in complex with different ligands. The structures provide putative snapshots along the catalytic cycle, which support an associative reaction mechanism that differs in some important aspects from the currently accepted model and reinforces the hypothesis of convergent evolution in PPs.


    Organizational Affiliation

    Unité de Biochimie Structurale, CNRS-URA 2185, Institut Pasteur, 75724 Paris Cedex 15, France.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
SER-THR PHOSPHATASE MSPP A234Mycolicibacterium smegmatis MC2 155Mutation(s): 0 
Gene Names: MSMEG_1928
Find proteins for A0QTQ6 (Mycolicibacterium smegmatis (strain ATCC 700084 / mc(2)155))
Explore A0QTQ6 
Go to UniProtKB:  A0QTQ6
Protein Feature View
Expand
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 0.83 Å
  • R-Value Free: 0.124 
  • R-Value Observed: 0.095 
  • Space Group: P 21 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 76.382α = 90
b = 83.998β = 90
c = 33.478γ = 90
Software Package:
Software NamePurpose
SHELXL-97refinement
XDSdata reduction
XSCALEdata scaling
AMoREphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2007-07-24
    Type: Initial release
  • Version 1.1: 2011-05-08
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2019-05-22
    Changes: Data collection, Other, Refinement description
  • Version 1.4: 2019-07-24
    Changes: Data collection