1SA1

Tubulin-podophyllotoxin: stathmin-like domain complex


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 4.20 Å
  • R-Value Free: 0.259 
  • R-Value Work: 0.204 
  • R-Value Observed: 0.206 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Insight into tubulin regulation from a complex with colchicine and a stathmin-like domain.

Ravelli, R.B.Gigant, B.Curmi, P.A.Jourdain, I.Lachkar, S.Sobel, A.Knossow, M.

(2004) Nature 428: 198-202

  • DOI: 10.1038/nature02393
  • Primary Citation of Related Structures:  
    1SA1, 1SA0

  • PubMed Abstract: 
  • Microtubules are cytoskeletal polymers of tubulin involved in many cellular functions. Their dynamic instability is controlled by numerous compounds and proteins, including colchicine and stathmin family proteins. The way in which microtubule instability is regulated at the molecular level has remained elusive, mainly because of the lack of appropriate structural data ...

    Microtubules are cytoskeletal polymers of tubulin involved in many cellular functions. Their dynamic instability is controlled by numerous compounds and proteins, including colchicine and stathmin family proteins. The way in which microtubule instability is regulated at the molecular level has remained elusive, mainly because of the lack of appropriate structural data. Here, we present the structure, at 3.5 A resolution, of tubulin in complex with colchicine and with the stathmin-like domain (SLD) of RB3. It shows the interaction of RB3-SLD with two tubulin heterodimers in a curved complex capped by the SLD amino-terminal domain, which prevents the incorporation of the complexed tubulin into microtubules. A comparison with the structure of tubulin in protofilaments shows changes in the subunits of tubulin as it switches from its straight conformation to a curved one. These changes correlate with the loss of lateral contacts and provide a rationale for the rapid microtubule depolymerization characteristic of dynamic instability. Moreover, the tubulin-colchicine complex sheds light on the mechanism of colchicine's activity: we show that colchicine binds at a location where it prevents curved tubulin from adopting a straight structure, which inhibits assembly.


    Organizational Affiliation

    European Molecular Biology Laboratory (EMBL), Grenoble Outstation, 6 rue Jules Horowitz, BP 181, 38042 Grenoble Cedex 9, France.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Tubulin alpha chainA, C451Bos taurusMutation(s): 0 
Gene Names: TUBA1D
UniProt
Find proteins for Q2HJ86 (Bos taurus)
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Go to UniProtKB:  Q2HJ86
Protein Feature View
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  • Reference Sequence
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Tubulin beta chainB, D445Bos taurusMutation(s): 0 
Gene Names: TUBB2B
UniProt
Find proteins for Q6B856 (Bos taurus)
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Go to UniProtKB:  Q6B856
Protein Feature View
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  • Reference Sequence
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
Stathmin 4E142Rattus norvegicusMutation(s): 0 
Gene Names: Stmn4
UniProt
Find proteins for P63043 (Rattus norvegicus)
Explore P63043 
Go to UniProtKB:  P63043
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 4 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
GTP
Query on GTP

Download Ideal Coordinates CCD File 
G [auth A], K [auth C]GUANOSINE-5'-TRIPHOSPHATE
C10 H16 N5 O14 P3
XKMLYUALXHKNFT-UUOKFMHZSA-N
 Ligand Interaction
GDP
Query on GDP

Download Ideal Coordinates CCD File 
H [auth B], L [auth D]GUANOSINE-5'-DIPHOSPHATE
C10 H15 N5 O11 P2
QGWNDRXFNXRZMB-UUOKFMHZSA-N
 Ligand Interaction
POD
Query on POD

Download Ideal Coordinates CCD File 
I [auth B], M [auth D]9-HYDROXY-5-(3,4,5-TRIMETHOXYPHENYL)-5,8,8A,9-TETRAHYDROFURO[3',4':6,7]NAPHTHO[2,3-D][1,3]DIOXOL-6(5AH)-ONE
C22 H22 O8
YJGVMLPVUAXIQN-XVVDYKMHSA-N
 Ligand Interaction
MG
Query on MG

Download Ideal Coordinates CCD File 
F [auth A], J [auth C]MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
PODIC50:  2100   nM  BindingDB
PODIC50:  1400   nM  BindingDB
PODIC50:  460   nM  BindingDB
PODΔG:  1088   kJ/mol  BindingDB
PODΔH:  775.7999877929688   kJ/mol  BindingDB
PODIC50:  3710   nM  BindingDB
PODIC50:  460   nM  BindingDB
PODIC50:  560   nM  BindingDB
PODIC50:  1300   nM  BindingDB
PODIC50:  350   nM  BindingDB
PODIC50:  1560   nM  BindingDB
POD-TΔS:  312.239990234375   kJ/mol  BindingDB
PODKi:  2180   nM  BindingDB
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 4.20 Å
  • R-Value Free: 0.259 
  • R-Value Work: 0.204 
  • R-Value Observed: 0.206 
  • Space Group: P 65
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 328.061α = 90
b = 328.061β = 90
c = 54.301γ = 120
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
AMoREphasing
REFMACrefinement

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2004-03-23
    Type: Initial release
  • Version 1.1: 2007-10-16
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance