2BTO

Structure of BtubA from Prosthecobacter dejongeii


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.5 Å
  • R-Value Free: 0.235 
  • R-Value Work: 0.200 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Structure of Bacterial Tubulin Btuba/B: Evidence for Horizontal Gene Transfer.

Schlieper, D.Oliva, M.A.Andreu, J.M.Lowe, J.

(2005) Proc.Natl.Acad.Sci.USA 102: 9170

  • DOI: 10.1073/pnas.0502859102
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • alphabeta-Tubulin heterodimers, from which the microtubules of the cytoskeleton are built, have a complex chaperone-dependent folding pathway. They are thought to be unique to eukaryotes, whereas the homologue FtsZ can be found in bacteria. The excep ...

    alphabeta-Tubulin heterodimers, from which the microtubules of the cytoskeleton are built, have a complex chaperone-dependent folding pathway. They are thought to be unique to eukaryotes, whereas the homologue FtsZ can be found in bacteria. The exceptions are BtubA and BtubB from Prosthecobacter, which have higher sequence homology to eukaryotic tubulin than to FtsZ. Here we show that some of their properties are different from tubulin, such as weak dimerization and chaperone-independent folding. However, their structure is strikingly similar to tubulin including surface loops, and BtubA/B form tubulin-like protofilaments. Presumably, BtubA/B were transferred from a eukaryotic cell by horizontal gene transfer because their high degree of similarity to eukaryotic genes is unique within the Prosthecobacter genome.


    Organizational Affiliation

    Laboratory of Molecular Biology, Medical Research Council, Hills Road, Cambridge CB2 2QH, United Kingdom.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
TUBULIN BTUBA
A, B
473Prosthecobacter dejongeiiMutation(s): 0 
Gene Names: btubA
Find proteins for Q8GCC5 (Prosthecobacter dejongeii)
Go to UniProtKB:  Q8GCC5
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
THIOREDOXIN 1
T
108Escherichia coli (strain K12)Mutation(s): 0 
Gene Names: trxA (fipA, tsnC)
Find proteins for P0AA25 (Escherichia coli (strain K12))
Go to UniProtKB:  P0AA25
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
GTP
Query on GTP

Download SDF File 
Download CCD File 
A, B
GUANOSINE-5'-TRIPHOSPHATE
C10 H16 N5 O14 P3
XKMLYUALXHKNFT-UUOKFMHZSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.5 Å
  • R-Value Free: 0.235 
  • R-Value Work: 0.200 
  • Space Group: P 3 2 1
Unit Cell:
Length (Å)Angle (°)
a = 180.539α = 90.00
b = 180.539β = 90.00
c = 84.229γ = 120.00
Software Package:
Software NamePurpose
REFMACrefinement
MOSFLMdata reduction
SCALAdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2005-06-23
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Advisory, Version format compliance