3HKB

Tubulin: RB3 Stathmin-like domain complex


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.65 Å
  • R-Value Free: 0.254 
  • R-Value Work: 0.213 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Variations in the colchicine-binding domain provide insight into the structural switch of tubulin

Dorleans, A.Gigant, B.Ravelli, R.B.G.Mailliet, P.Mikol, V.Knossow, M.

(2009) Proc.Natl.Acad.Sci.USA 106: 13775-13779

  • DOI: 10.1073/pnas.0904223106
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Structural changes occur in the alphabeta-tubulin heterodimer during the microtubule assembly/disassembly cycle. Their most prominent feature is a transition from a straight, microtubular structure to a curved structure. There is a broad range of sma ...

    Structural changes occur in the alphabeta-tubulin heterodimer during the microtubule assembly/disassembly cycle. Their most prominent feature is a transition from a straight, microtubular structure to a curved structure. There is a broad range of small molecule compounds that disturbs the microtubule cycle, a class of which targets the colchicine-binding site and prevents microtubule assembly. This class includes compounds with very different chemical structures, and it is presently unknown whether they prevent tubulin polymerization by the same mechanism. To address this issue, we have determined the structures of tubulin complexed with a set of such ligands and show that they interfere with several of the movements of tubulin subunits structural elements upon its transition from curved to straight. We also determined the structure of tubulin unliganded at the colchicine site; this reveals that a beta-tubulin loop (termed T7) flips into this site. As with colchicine site ligands, this prevents a helix which is at the interface with alpha-tubulin from stacking onto a beta-tubulin beta sheet as in straight protofilaments. Whereas in the presence of these ligands the interference with microtubule assembly gets frozen, by flipping in and out the beta-subunit T7 loop participates in a reversible way in the resistance to straightening that opposes microtubule assembly. Our results suggest that it thereby contributes to microtubule dynamic instability.


    Organizational Affiliation

    Laboratoire d'Enzymologie et Biochimie Structurales, Centre National de la Recherche Scientifique, B√Ętiment 34, 1, avenue de la Terrasse, 91198 Gif sur Yvette, France.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Tubulin alpha chain
A, C
451Ovis ariesMutation(s): 0 
Find proteins for D0VWZ0 (Ovis aries)
Go to UniProtKB:  D0VWZ0
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Tubulin beta chain
B, D
445Ovis ariesMutation(s): 0 
Find proteins for D0VWY9 (Ovis aries)
Go to UniProtKB:  D0VWY9
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
Stathmin-4
E
142Rattus norvegicusMutation(s): 0 
Gene Names: Stmn4
Find proteins for P63043 (Rattus norvegicus)
Go to UniProtKB:  P63043
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
GDP
Query on GDP

Download SDF File 
Download CCD File 
B, D
GUANOSINE-5'-DIPHOSPHATE
C10 H15 N5 O11 P2
QGWNDRXFNXRZMB-UUOKFMHZSA-N
 Ligand Interaction
GTP
Query on GTP

Download SDF File 
Download CCD File 
A, C
GUANOSINE-5'-TRIPHOSPHATE
C10 H16 N5 O14 P3
XKMLYUALXHKNFT-UUOKFMHZSA-N
 Ligand Interaction
MG
Query on MG

Download SDF File 
Download CCD File 
A, C
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.65 Å
  • R-Value Free: 0.254 
  • R-Value Work: 0.213 
  • Space Group: P 65
Unit Cell:
Length (Å)Angle (°)
a = 328.826α = 90.00
b = 328.826β = 90.00
c = 53.711γ = 120.00
Software Package:
Software NamePurpose
ADSCdata collection
AMoREphasing
SCALEPACKdata scaling
DENZOdata reduction
REFMACrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2009-09-01
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Advisory, Version format compliance