3J7I

Structure of alpha- and beta- tubulin in GMPCPP-microtubules


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 8.9 Å
  • Aggregation State: HELICAL ARRAY 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation 3D Report Full Report


This is version 1.0 of the entry. See complete history

Literature

Conformational changes in tubulin in GMPCPP and GDP-taxol microtubules observed by cryoelectron microscopy

Yajima, H.Ogura, T.Nitta, R.Okada, Y.Sato, C.Hirokawa, N.

(2012) J.Cell Biol. 198: 315-322

  • DOI: 10.1083/jcb.201201161

  • PubMed Abstract: 
  • Microtubules are dynamic polymers that stochastically switch between growing and shrinking phases. Microtubule dynamics are regulated by guanosine triphosphate (GTP) hydrolysis by β-tubulin, but the mechanism of this regulation remains elusive becaus ...

    Microtubules are dynamic polymers that stochastically switch between growing and shrinking phases. Microtubule dynamics are regulated by guanosine triphosphate (GTP) hydrolysis by β-tubulin, but the mechanism of this regulation remains elusive because high-resolution microtubule structures have only been revealed for the guanosine diphosphate (GDP) state. In this paper, we solved the cryoelectron microscopy (cryo-EM) structure of microtubule stabilized with a GTP analogue, guanylyl 5'-α,β-methylenediphosphonate (GMPCPP), at 8.8-Å resolution by developing a novel cryo-EM image reconstruction algorithm. In contrast to the crystal structures of GTP-bound tubulin relatives such as γ-tubulin and bacterial tubulins, significant changes were detected between GMPCPP and GDP-taxol microtubules at the contacts between tubulins both along the protofilament and between neighboring protofilaments, contributing to the stability of the microtubule. These findings are consistent with the structural plasticity or lattice model and suggest the structural basis not only for the regulatory mechanism of microtubule dynamics but also for the recognition of the nucleotide state of the microtubule by several microtubule-binding proteins, such as EB1 or kinesin.


    Related Citations: 
    • Mutual Conformational Changes of Kinesin and GTP-Microtubule Upon their Binding
      Yajima, H.,Ogura, T.,Nitta, R.,Okada, Y.,Sato, C.,Hirokawa, N.
      () TO BE PUBLISHED --: --


    Organizational Affiliation

    Department of Cell Biology and Anatomy, Graduate School of Medicine, The University of Tokyo, Hongo, Tokyo 113-0033, Japan.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Tubulin alpha-1A chain
A
451Sus scrofaMutation(s): 0 
Gene Names: TUBA1A
Find proteins for P02550 (Sus scrofa)
Go to Gene View: TUBA1A
Go to UniProtKB:  P02550
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Tubulin beta chain
B
445Sus scrofaMutation(s): 0 
Find proteins for P02554 (Sus scrofa)
Go to UniProtKB:  P02554
Small Molecules
Ligands 2 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
MG
Query on MG

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

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 8.9 Å
  • Aggregation State: HELICAL ARRAY 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2014-12-10
    Type: Initial release