2DFN

Structure of shikimate kinase from Mycobacterium tuberculosis complexed with ADP and shikimate at 1.9 angstrons of resolution


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.93 Å
  • R-Value Free: 0.267 
  • R-Value Work: 0.202 
  • R-Value Observed: 0.202 

Starting Model: experimental
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This is version 1.3 of the entry. See complete history


Literature

Effects of the magnesium and chloride ions and shikimate on the structure of shikimate kinase from Mycobacterium tuberculosis

Dias, M.V.Faim, L.M.Vasconcelos, I.B.de Oliveira, J.S.Basso, L.A.Santos, D.S.de Azevedo, W.F.

(2007) Acta Crystallogr Sect F Struct Biol Cryst Commun 63: 1-6

  • DOI: https://doi.org/10.1107/S1744309106046823
  • Primary Citation of Related Structures:  
    2DFN, 2DFT

  • PubMed Abstract: 

    Bacteria, fungi and plants can convert carbohydrate and phosphoenolpyruvate into chorismate, which is the precursor of various aromatic compounds. The seven enzymes of the shikimate pathway are responsible for this conversion. Shikimate kinase (SK) is the fifth enzyme in this pathway and converts shikimate to shikimate-3-phosphate. In this work, the conformational changes that occur on binding of shikimate, magnesium and chloride ions to SK from Mycobacterium tuberculosis (MtSK) are described. It was observed that both ions and shikimate influence the conformation of residues of the active site of MtSK. Magnesium influences the conformation of the shikimate hydroxyl groups and the position of the side chains of some of the residues of the active site. Chloride seems to influence the affinity of ADP and its position in the active site and the opening length of the LID domain. Shikimate binding causes a closing of the LID domain and also seems to influence the crystallographic packing of SK. The results shown here could be useful for understanding the catalytic mechanism of SK and the role of ions in the activity of this protein.


  • Organizational Affiliation

    Programa de Pós-Graduação em Biofísica Molecular, Departamento de Física, UNESP, São José do Rio Preto, SP 15054-000, Brazil.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Shikimate kinase176Mycobacterium tuberculosisMutation(s): 0 
Gene Names: AroK
EC: 2.7.1.71
UniProt
Find proteins for P9WPY3 (Mycobacterium tuberculosis (strain ATCC 25618 / H37Rv))
Explore P9WPY3 
Go to UniProtKB:  P9WPY3
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP9WPY3
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.93 Å
  • R-Value Free: 0.267 
  • R-Value Work: 0.202 
  • R-Value Observed: 0.202 
  • Space Group: P 32 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 63.296α = 90
b = 63.296β = 90
c = 91.61γ = 120
Software Package:
Software NamePurpose
REFMACrefinement
MOSFLMdata reduction
CCP4data scaling
AMoREphasing

Structure Validation

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Ligand Structure Quality Assessment 


Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2006-09-03
    Type: Initial release
  • Version 1.1: 2008-04-30
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2023-10-25
    Changes: Data collection, Database references, Derived calculations, Refinement description