1O6Y

Catalytic domain of PknB kinase from Mycobacterium tuberculosis


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.20 Å
  • R-Value Free: 0.230 
  • R-Value Work: 0.191 
  • R-Value Observed: 0.193 

wwPDB Validation 3D Report Full Report


This is version 1.4 of the entry. See complete history


Literature

Crystal Structure of the Catalytic Domain of the Pknb Serine/Threonine Kinase from Mycobacterium Tuberculosis

Ortiz-Lombardia, M.Pompeo, F.Boitel, B.Alzari, P.M.

(2003) J Biol Chem 278: 13094

  • DOI: 10.1074/jbc.M300660200
  • Structures With Same Primary Citation

  • PubMed Abstract: 
  • With the advent of the sequencing programs of prokaryotic genomes, many examples of the presence of serine/threonine protein kinases in these organisms have been identified. Moreover, these kinases could be classified as homologues of those belonging ...

    With the advent of the sequencing programs of prokaryotic genomes, many examples of the presence of serine/threonine protein kinases in these organisms have been identified. Moreover, these kinases could be classified as homologues of those belonging to the well characterized superfamily of the eukaryotic serine/threonine and tyrosine kinases. Eleven such kinases were recognized in the genome of Mycobacterium tuberculosis. Here we report the crystal structure of an active form of PknB, one of the four M. tuberculosis kinases that are conserved in the downsized genome of Mycobacterium leprae and are therefore presumed to play an important role in the processes that regulate the complex life cycle of mycobacteria. Our structure confirms again the extraordinary conservation of the protein kinase fold and constitutes a landmark that extends this conservation across the evolutionary distance between high eukaryotes and eubacteria. The structure of PknB, in complex with a nucleotide triphosphate analog, reveals an enzyme in the active state with an unprecedented arrangement of the Gly-rich loop associated with a new conformation of the nucleotide gamma-phosphoryl group. It presents as well a partially disordered activation loop, suggesting an induced fit mode of binding for the so far unknown substrates of this kinase or for some modulating factor(s).


    Organizational Affiliation

    Unité de Biochimie Structurale, URA 2185 CNRS, Institut Pasteur, 25, rue du Dr. Roux, 75724 Paris, cedex 15, France.



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
SERINE/THREONINE-PROTEIN KINASE PKNBA299Mycobacterium tuberculosis H37RvMutation(s): 0 
Gene Names: pknBRv0014cMTCY10H4.14c
EC: 2.7.11.1
Find proteins for P9WI81 (Mycobacterium tuberculosis (strain ATCC 25618 / H37Rv))
Explore P9WI81 
Go to UniProtKB:  P9WI81
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ACP
Query on ACP

Download CCD File 
A
PHOSPHOMETHYLPHOSPHONIC ACID ADENYLATE ESTER
C11 H18 N5 O12 P3
UFZTZBNSLXELAL-IOSLPCCCSA-N
 Ligand Interaction
MG
Query on MG

Download CCD File 
A
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.20 Å
  • R-Value Free: 0.230 
  • R-Value Work: 0.191 
  • R-Value Observed: 0.193 
  • Space Group: C 2 2 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 114.607α = 90
b = 122.088β = 90
c = 46.975γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
MOSFLMdata reduction
SCALAdata scaling
AMoREphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2003-01-30
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Advisory, Version format compliance
  • Version 1.2: 2017-05-24
    Changes: Structure summary
  • Version 1.3: 2019-05-15
    Changes: Data collection, Experimental preparation
  • Version 1.4: 2019-08-21
    Changes: Data collection, Database references