2KUD

NMR structure of the PASTA domain 1 and 2 of Mycobacterium tuberculosis of PknB


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 30 
  • Conformers Submitted: 30 
  • Selection Criteria: structures with the lowest energy 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

The structure of PknB extracellular PASTA domain from mycobacterium tuberculosis suggests a ligand-dependent kinase activation

Barthe, P.Mukamolova, G.V.Roumestand, C.Cohen-Gonsaud, M.

(2010) Structure 18: 606-615

  • DOI: 10.1016/j.str.2010.02.013
  • Primary Citation of Related Structures:  2KUE, 2KUF, 2KUI

  • PubMed Abstract: 
  • PknB is a transmembrane Ser/Thr protein kinase that defines and belongs to an ultraconserved kinase subfamily found in Gram-positive bacteria. Essential for Mycobacterium tuberculosis growth, its close homolog in Bacillus subtilis has been linked to ...

    PknB is a transmembrane Ser/Thr protein kinase that defines and belongs to an ultraconserved kinase subfamily found in Gram-positive bacteria. Essential for Mycobacterium tuberculosis growth, its close homolog in Bacillus subtilis has been linked to exit from dormancy. The kinase possesses an extracellular region composed of a repetition of PASTA domains, believed to bind peptidoglycan fragments that might act as a signaling molecule. We report here the first solution structure of this extracellular region. Small-angle X-ray scattering and nuclear magnetic resonance studies show that the four PASTA domains display an unexpected linear organization, contrary to what is observed in the distant protein PBP2x from Streptococccus pneumoniae where two PASTA domains fold over in a compact structure. We propose a model for PknB activation based on a ligand-dependent dimerization of the extracellular PASTA domains that initiates multiple signaling pathways.


    Organizational Affiliation

    Centre National de la Recherche Scientifique UMR 5048, Centre de Biochimie Structurale, 29 rue de Navacelles, 34090 Montpellier, France.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Serine/threonine-protein kinase pknB
A
140Mycobacterium tuberculosis (strain ATCC 25618 / H37Rv)Gene Names: pknB
EC: 2.7.11.1
Find proteins for P9WI81 (Mycobacterium tuberculosis (strain ATCC 25618 / H37Rv))
Go to UniProtKB:  P9WI81
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 30 
  • Conformers Submitted: 30 
  • Selection Criteria: structures with the lowest energy 
  • Olderado: 2KUD Olderado

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2010-04-14
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Version format compliance