2BTO

Structure of BtubA from Prosthecobacter dejongeii


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.50 Å
  • R-Value Free: 0.235 
  • R-Value Work: 0.200 
  • R-Value Observed: 0.202 

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 U S A 102: 9170

  • DOI: 10.1073/pnas.0502859102
  • Primary Citation of Related Structures:  
    2BTQ, 2BTO

  • 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:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
TUBULIN BTUBAAB473Prosthecobacter dejongeiiMutation(s): 0 
Gene Names: btubA
Find proteins for Q8GCC5 (Prosthecobacter dejongeii)
Explore Q8GCC5 
Go to UniProtKB:  Q8GCC5
Protein Feature View
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
THIOREDOXIN 1T108Escherichia coliMutation(s): 0 
Find proteins for P0AA25 (Escherichia coli (strain K12))
Explore P0AA25 
Go to UniProtKB:  P0AA25
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
GTP
Query on GTP

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: 2.50 Å
  • R-Value Free: 0.235 
  • R-Value Work: 0.200 
  • R-Value Observed: 0.202 
  • Space Group: P 3 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 180.539α = 90
b = 180.539β = 90
c = 84.229γ = 120
Software Package:
Software NamePurpose
REFMACrefinement
MOSFLMdata reduction
SCALAdata scaling

Structure Validation

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Entry History 

Deposition Data

Revision History 

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