1RQ2

MYCOBACTERIUM TUBERCULOSIS FTSZ IN COMPLEX WITH CITRATE


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.86 Å
  • R-Value Free: 0.222 
  • R-Value Work: 0.187 
  • R-Value Observed: 0.189 

wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

Structure of Mycobacterium tuberculosis FtsZ reveals unexpected, G protein-like conformational switches.

Leung, A.K.Lucile White, E.Ross, L.J.Reynolds, R.C.DeVito, J.A.Borhani, D.W.

(2004) J Mol Biol 342: 953-970

  • DOI: 10.1016/j.jmb.2004.07.061
  • Primary Citation of Related Structures:  
    1RLU, 1RQ2, 1RQ7

  • PubMed Abstract: 
  • We report three crystal structures of the Mycobacterium tuberculosis cell division protein FtsZ, as the citrate, GDP, and GTPgammaS complexes, determined at 1.89, 2.60, and 2.08A resolution. MtbFtsZ crystallized as a tight, laterally oriented dimer distinct from the longitudinal polymer observed for alphabeta-tubulin ...

    We report three crystal structures of the Mycobacterium tuberculosis cell division protein FtsZ, as the citrate, GDP, and GTPgammaS complexes, determined at 1.89, 2.60, and 2.08A resolution. MtbFtsZ crystallized as a tight, laterally oriented dimer distinct from the longitudinal polymer observed for alphabeta-tubulin. Mutational data on Escherichia coli FtsZ suggest that this dimer interface is important for proper protofilament and "Z-ring" assembly and function. An alpha-to-beta secondary structure conformational switch at the dimer interface is spatially analogous to, and has many of the hallmarks of, the Switch I conformational changes exhibited by G-proteins upon activation. The presence of a gamma-phosphate in the FtsZ active site modulates the conformation of the "tubulin" loop T3 (spatially analogous to the G-protein Switch II); T3 switching upon gamma-phosphate ligation is directly coupled to the alpha-to-beta switch by steric overlap. The dual conformational switches observed here for the first time in an FtsZ link GTP binding and hydrolysis to FtsZ (and tubulin) lateral assembly and Z-ring contraction, and they are suggestive of an underappreciated functional analogy between FtsZ, tubulin and G-proteins.


    Related Citations: 
    • Polymerization of C-Terminally Truncated Mycobacterium tuberculosis FtsZ Is Unlikely to be Physiologically Relevant
      Borhani, D.W., White, E.L.
      () To be published --: --
    • Crystallization of the Mycobacterium tuberculosis cell-division protein FtsZ
      Leung, A.K.W., White, E.L., Ross, L.J., Borhani, D.W.
      (2000) Acta Crystallogr D Biol Crystallogr 56: 1634
    • Slow polymerization of Mycobacterium tuberculosis FtsZ
      White, E.L., Ross, L.J., Reynolds, R.C., Seitz, L.E., Moore, G.D., Borhani, D.W.
      (2000) J Bacteriol 182: 4028
    • 2-Alkoxycarbonylaminopyridines: inhibitors of Mycobacterium tuberculosis FtsZ
      White, E.L., Suling, W.J., Ross, L.J., Seitz, L.E., Reynolds, R.C.
      (2002) J Antimicrob Chemother 50: 111

    Organizational Affiliation

    Drug Discovery Division, Southern Research Institute, Birmingham, AL 35205, USA.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Cell division protein ftsZA, B382Mycobacterium tuberculosisMutation(s): 0 
Gene Names: ftsZRv2150cMT2209MTCY270.18MB2174C
UniProt
Find proteins for P9WN95 (Mycobacterium tuberculosis (strain ATCC 25618 / H37Rv))
Explore P9WN95 
Go to UniProtKB:  P9WN95
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP9WN95
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
CIT
Query on CIT

Download Ideal Coordinates CCD File 
C [auth A]CITRIC ACID
C6 H8 O7
KRKNYBCHXYNGOX-UHFFFAOYSA-N
 Ligand Interaction
Binding Affinity Annotations 
IDSourceBinding Affinity
CIT PDBBind:  1RQ2 IC50: 3.00e+6 (nM) from 1 assay(s)
Binding MOAD:  1RQ2 IC50: 3.00e+6 (nM) from 1 assay(s)
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.86 Å
  • R-Value Free: 0.222 
  • R-Value Work: 0.187 
  • R-Value Observed: 0.189 
  • Space Group: P 65
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 88.116α = 90
b = 88.116β = 90
c = 176.807γ = 120
Software Package:
Software NamePurpose
MOSFLMdata reduction
SCALAdata scaling
TRUNCATEdata reduction
EPMRphasing
REFMACrefinement
X-PLORrefinement
CCP4data scaling
TRUNCATEdata scaling

Structure Validation

View Full Validation Report




Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2004-08-31
    Type: Initial release
  • Version 1.1: 2008-04-29
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2017-10-11
    Changes: Refinement description