3JAL

Cryo-EM structure of GMPCPP-microtubule co-polymerized with EB3


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.50 Å
  • Aggregation State: FILAMENT 
  • Reconstruction Method: HELICAL 

wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

Mechanistic Origin of Microtubule Dynamic Instability and Its Modulation by EB Proteins.

Zhang, R.Alushin, G.M.Brown, A.Nogales, E.

(2015) Cell 162: 849-859

  • DOI: 10.1016/j.cell.2015.07.012
  • Primary Citation of Related Structures:  
    3JAR, 3JAS, 3JAT, 3JAW, 3JAK, 3JAL

  • PubMed Abstract: 
  • Microtubule (MT) dynamic instability is driven by GTP hydrolysis and regulated by microtubule-associated proteins, including the plus-end tracking end-binding protein (EB) family. We report six cryo-electron microscopy (cryo-EM) structures of MTs, at 3.5 ...

    Microtubule (MT) dynamic instability is driven by GTP hydrolysis and regulated by microtubule-associated proteins, including the plus-end tracking end-binding protein (EB) family. We report six cryo-electron microscopy (cryo-EM) structures of MTs, at 3.5 Å or better resolution, bound to GMPCPP, GTPγS, or GDP, either decorated with kinesin motor domain after polymerization or copolymerized with EB3. Subtle changes around the E-site nucleotide during hydrolysis trigger conformational changes in α-tubulin around an "anchor point," leading to global lattice rearrangements and strain generation. Unlike the extended lattice of the GMPCPP-MT, the EB3-bound GTPγS-MT has a compacted lattice that differs in lattice twist from that of the also compacted GDP-MT. These results and the observation that EB3 promotes rapid hydrolysis of GMPCPP suggest that EB proteins modulate structural transitions at growing MT ends by recognizing and promoting an intermediate state generated during GTP hydrolysis. Our findings explain both EBs end-tracking behavior and their effect on microtubule dynamics.


    Organizational Affiliation

    Life Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA; Department of Molecular and Cell Biology, Howard Hughes Medical Institute, 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-1B chain ACEJKL451Sus scrofaMutation(s): 0 
Gene Names: TUBA1B
Find proteins for Q2XVP4 (Sus scrofa)
Explore Q2XVP4 
Go to UniProtKB:  Q2XVP4
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  • Reference Sequence
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Tubulin beta chain BDFGHI445Sus scrofaMutation(s): 0 
Find proteins for P02554 (Sus scrofa)
Explore P02554 
Go to UniProtKB:  P02554
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  • Reference Sequence
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
Microtubule-associated protein RP/EB family member 3 MN203Homo sapiensMutation(s): 0 
Gene Names: MAPRE3
Find proteins for Q9UPY8 (Homo sapiens)
Explore Q9UPY8 
Go to UniProtKB:  Q9UPY8
NIH Common Fund Data Resources
PHAROS:  Q9UPY8
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  • Reference Sequence
Small Molecules
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.50 Å
  • Aggregation State: FILAMENT 
  • Reconstruction Method: HELICAL 

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

  • Deposited Date: 2015-06-16 
  • Released Date: 2015-08-12 
  • Deposition Author(s): Zhang, R., Nogales, E.

Revision History 

  • Version 1.0: 2015-08-12
    Type: Initial release
  • Version 1.1: 2015-09-02
    Changes: Database references
  • Version 1.2: 2018-07-18
    Changes: Author supporting evidence, Data collection
  • Version 1.3: 2019-12-18
    Changes: Database references, Other