3J6G

Minimized average structure of microtubules stabilized by taxol


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 5.50 Å
  • Aggregation State: FILAMENT 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

High-Resolution Microtubule Structures Reveal the Structural Transitions in alpha beta-Tubulin upon GTP Hydrolysis.

Alushin, G.M.Lander, G.C.Kellogg, E.H.Zhang, R.Baker, D.Nogales, E.

(2014) Cell 157: 1117-1129

  • DOI: 10.1016/j.cell.2014.03.053
  • Primary Citation of Related Structures:  
    3J6E, 3J6F, 3J6G

  • PubMed Abstract: 
  • Dynamic instability, the stochastic switching between growth and shrinkage, is essential for microtubule function. This behavior is driven by GTP hydrolysis in the microtubule lattice and is inhibited by anticancer agents like Taxol. We provide insight into the mechanism of dynamic instability, based on high-resolution cryo-EM structures (4 ...

    Dynamic instability, the stochastic switching between growth and shrinkage, is essential for microtubule function. This behavior is driven by GTP hydrolysis in the microtubule lattice and is inhibited by anticancer agents like Taxol. We provide insight into the mechanism of dynamic instability, based on high-resolution cryo-EM structures (4.7-5.6 Å) of dynamic microtubules and microtubules stabilized by GMPCPP or Taxol. We infer that hydrolysis leads to a compaction around the E-site nucleotide at longitudinal interfaces, as well as movement of the α-tubulin intermediate domain and H7 helix. Displacement of the C-terminal helices in both α- and β-tubulin subunits suggests an effect on interactions with binding partners that contact this region. Taxol inhibits most of these conformational changes, allosterically inducing a GMPCPP-like state. Lateral interactions are similar in all conditions we examined, suggesting that microtubule lattice stability is primarily modulated at longitudinal interfaces.


    Organizational Affiliation

    Life Sciences Division, Lawrence Berkeley National Lab, Berkeley, CA 94720, USA; Howard Hughes Medical Institute, Department of Molecular and Cell Biology, University of California, Berkeley, Berkeley, CA 94720, USA. Electronic address: enogales@lbl.gov.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Tubulin alpha-1A chain
A, C, E, G, I, K, M, O
A, C, E, G, I, K, M, O, Q
439Sus scrofaMutation(s): 0 
Gene Names: TUBA1A
UniProt
Find proteins for P02550 (Sus scrofa)
Explore P02550 
Go to UniProtKB:  P02550
Protein Feature View
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Tubulin beta chain
B, D, F, H, J, L, N, P
B, D, F, H, J, L, N, P, R
427Sus scrofaMutation(s): 0 
UniProt
Find proteins for P02554 (Sus scrofa)
Explore P02554 
Go to UniProtKB:  P02554
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 4 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
TA1 (Subject of Investigation/LOI)
Query on TA1

Download Ideal Coordinates CCD File 
BB [auth R] , DA [auth F] , HA [auth H] , LA [auth J] , PA [auth L] , TA [auth N] , V [auth B] , XA [auth P] , 
BB [auth R], DA [auth F], HA [auth H], LA [auth J], PA [auth L], TA [auth N], V [auth B], XA [auth P], Z [auth D]
TAXOL
C47 H51 N O14
RCINICONZNJXQF-MZXODVADSA-N
 Ligand Interaction
GTP (Subject of Investigation/LOI)
Query on GTP

Download Ideal Coordinates CCD File 
AA [auth E] , EA [auth G] , IA [auth I] , MA [auth K] , QA [auth M] , S [auth A] , UA [auth O] , W [auth C] , 
AA [auth E], EA [auth G], IA [auth I], MA [auth K], QA [auth M], S [auth A], UA [auth O], W [auth C], YA [auth Q]
GUANOSINE-5'-TRIPHOSPHATE
C10 H16 N5 O14 P3
XKMLYUALXHKNFT-UUOKFMHZSA-N
 Ligand Interaction
GDP (Subject of Investigation/LOI)
Query on GDP

Download Ideal Coordinates CCD File 
AB [auth R] , CA [auth F] , GA [auth H] , KA [auth J] , OA [auth L] , SA [auth N] , U [auth B] , WA [auth P] , 
AB [auth R], CA [auth F], GA [auth H], KA [auth J], OA [auth L], SA [auth N], U [auth B], WA [auth P], Y [auth D]
GUANOSINE-5'-DIPHOSPHATE
C10 H15 N5 O11 P2
QGWNDRXFNXRZMB-UUOKFMHZSA-N
 Ligand Interaction
MG
Query on MG

Download Ideal Coordinates CCD File 
BA [auth E] , FA [auth G] , JA [auth I] , NA [auth K] , RA [auth M] , T [auth A] , VA [auth O] , X [auth C] , 
BA [auth E], FA [auth G], JA [auth I], NA [auth K], RA [auth M], T [auth A], VA [auth O], X [auth C], ZA [auth Q]
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
 Ligand Interaction
Binding Affinity Annotations 
IDSourceBinding Affinity
TA1 BindingDB:  3J6G EC50: 520 (nM) from 1 assay(s)
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 5.50 Å
  • Aggregation State: FILAMENT 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

View Full Validation Report




Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2014-06-04
    Type: Initial release
  • Version 1.1: 2018-07-18
    Changes: Author supporting evidence, Data collection