6GWC

Tubulin:iE5 alphaRep complex


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.6 Å
  • R-Value Free: 0.223 
  • R-Value Work: 0.173 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Selection and Characterization of Artificial Proteins Targeting the Tubulin alpha Subunit.

Campanacci, V.Urvoas, A.Consolati, T.Cantos-Fernandes, S.Aumont-Nicaise, M.Valerio-Lepiniec, M.Surrey, T.Minard, P.Gigant, B.

(2019) Structure 27: 497-506.e4

  • DOI: 10.1016/j.str.2018.12.001
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Microtubules are cytoskeletal filaments of eukaryotic cells made of αβ-tubulin heterodimers. Structural studies of non-microtubular tubulin rely mainly on molecules that prevent its self-assembly and are used as crystallization chaperones. Here we id ...

    Microtubules are cytoskeletal filaments of eukaryotic cells made of αβ-tubulin heterodimers. Structural studies of non-microtubular tubulin rely mainly on molecules that prevent its self-assembly and are used as crystallization chaperones. Here we identified artificial proteins from an αRep library that are specific to α-tubulin. Turbidity experiments indicate that these αReps impede microtubule assembly in a dose-dependent manner and total internal reflection fluorescence microscopy further shows that they specifically block growth at the microtubule (-) end. Structural data indicate that they do so by targeting the α-tubulin longitudinal surface. Interestingly, in one of the complexes studied, the α subunit is in a conformation that is intermediate between the ones most commonly observed in X-ray structures of tubulin and those seen in the microtubule, emphasizing the plasticity of tubulin. These α-tubulin-specific αReps broaden the range of tools available for the mechanistic study of microtubule dynamics and its regulation.


    Organizational Affiliation

    Institute for Integrative Biology of the Cell (I2BC), CEA, CNRS, Univ. Paris-Sud, Université Paris-Saclay, Gif-sur-Yvette Cedex 91198, France. Electronic address: philippe.minard@i2bc.paris-saclay.fr.,Institute for Integrative Biology of the Cell (I2BC), CEA, CNRS, Univ. Paris-Sud, Université Paris-Saclay, Gif-sur-Yvette Cedex 91198, France. Electronic address: benoit.gigant@i2bc.paris-saclay.fr.,The Francis Crick Institute, 1 Midland Road, London NW1 1AT, UK.,Institute for Integrative Biology of the Cell (I2BC), CEA, CNRS, Univ. Paris-Sud, Université Paris-Saclay, Gif-sur-Yvette Cedex 91198, France.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
ALPHA-TUBULIN
A
451N/AMutation(s): 0 
Protein Feature View is not available: No corresponding UniProt sequence found.
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Tubulin beta chain
B
445Ovis ariesMutation(s): 0 
Find proteins for D0VWY9 (Ovis aries)
Go to UniProtKB:  D0VWY9
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
iE5 ALPHAREP
C
232N/AMutation(s): 0 
Protein Feature View is not available: No corresponding UniProt sequence found.
Small Molecules
Ligands 4 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
GTP
Query on GTP

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

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Download CCD File 
A, B
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
 Ligand Interaction
PGE
Query on PGE

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Download CCD File 
A
TRIETHYLENE GLYCOL
C6 H14 O4
ZIBGPFATKBEMQZ-UHFFFAOYSA-N
 Ligand Interaction
MES
Query on MES

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Download CCD File 
B
2-(N-MORPHOLINO)-ETHANESULFONIC ACID
C6 H13 N O4 S
SXGZJKUKBWWHRA-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.6 Å
  • R-Value Free: 0.223 
  • R-Value Work: 0.173 
  • Space Group: P 32 2 1
Unit Cell:
Length (Å)Angle (°)
a = 102.346α = 90.00
b = 102.346β = 90.00
c = 216.207γ = 120.00
Software Package:
Software NamePurpose
BUSTERrefinement
PHASERphasing
XDSdata scaling
XDSdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2019-01-30
    Type: Initial release
  • Version 1.1: 2019-03-13
    Type: Data collection, Database references