5JH7

Tubulin-Eribulin complex


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.25 Å
  • R-Value Free: 0.220 
  • R-Value Work: 0.181 
  • R-Value Observed: 0.183 

wwPDB Validation   3D Report Full Report



Literature

Termination of Protofilament Elongation by Eribulin Induces Lattice Defects that Promote Microtubule Catastrophes.

Doodhi, H.Prota, A.E.Rodriguez-Garcia, R.Xiao, H.Custar, D.W.Bargsten, K.Katrukha, E.A.Hilbert, M.Hua, S.Jiang, K.Grigoriev, I.Yang, C.P.Cox, D.Horwitz, S.B.Kapitein, L.C.Akhmanova, A.Steinmetz, M.O.

(2016) Curr Biol 26: 1713-1721

  • DOI: 10.1016/j.cub.2016.04.053
  • Primary Citation of Related Structures:  
    5JH7

  • PubMed Abstract: 
  • Microtubules are dynamic polymers built of tubulin dimers that attach in a head-to-tail fashion to form protofilaments, which further associate laterally to form a tube. Asynchronous elongation of individual protofilaments can potentially lead to an ...

    Microtubules are dynamic polymers built of tubulin dimers that attach in a head-to-tail fashion to form protofilaments, which further associate laterally to form a tube. Asynchronous elongation of individual protofilaments can potentially lead to an altered microtubule-end structure that promotes sudden depolymerization, termed catastrophe [1-4]. However, how the dynamics of individual protofilaments relates to overall growth persistence has remained unclear. Here, we used the microtubule targeting anti-cancer drug Eribulin [5-7] to explore the consequences of stalled protofilament elongation on microtubule growth. Using X-ray crystallography, we first revealed that Eribulin binds to a site on β-tubulin that is required for protofilament plus-end elongation. Based on the structural information, we engineered a fluorescent Eribulin molecule. We demonstrate that single Eribulin molecules specifically interact with microtubule plus ends and are sufficient to either trigger a catastrophe or induce slow and erratic microtubule growth in the presence of EB3. Interestingly, we found that Eribulin increases the frequency of EB3 comet "splitting," transient events where a slow and erratically progressing comet is followed by a faster comet. This observation possibly reflects the "healing" of a microtubule lattice. Because EB3 comet splitting was also observed in control microtubules in the absence of any drugs, we propose that Eribulin amplifies a natural pathway toward catastrophe by promoting the arrest of protofilament elongation.


    Organizational Affiliation

    Laboratory of Biomolecular Research, Department of Biology and Chemistry, Paul Scherrer Institut, 5232 Villigen, Switzerland. Electronic address: michel.steinmetz@psi.ch.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Tubulin alpha-1B chainAC450Bos taurusMutation(s): 0 
Find proteins for P81947 (Bos taurus)
Explore P81947 
Go to UniProtKB:  P81947
Protein Feature View
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  • Reference Sequence
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Tubulin beta-2B chainBD445Bos taurusMutation(s): 0 
Gene Names: TUBB2B
Find proteins for Q6B856 (Bos taurus)
Explore Q6B856 
Go to UniProtKB:  Q6B856
Protein Feature View
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  • Reference Sequence
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
Stathmin-4E143Rattus norvegicusMutation(s): 0 
Gene Names: Stmn4
Find proteins for P63043 (Rattus norvegicus)
Explore P63043 
Go to UniProtKB:  P63043
Protein Feature View
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  • Reference Sequence
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Entity ID: 4
MoleculeChainsSequence LengthOrganismDetailsImage
Tubulin Tyrosine LigaseF384Gallus gallusMutation(s): 0 
Gene Names: TTL
Find proteins for E1BQ43 (Gallus gallus)
Explore E1BQ43 
Go to UniProtKB:  E1BQ43
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 10 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
6K9
Query on 6K9

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B, D
(1S,3S,6S,9S,12S,14R,16R,18S,20R,21R,22S,26R,29S,31R,32S,33R,35R,36S)-20-[(2S)-3-amino-2-hydroxypropyl]-21-methoxy-14-methyl-8,15-dimethylidene-2,19,30,34,37,39,40,41-octaoxanonacyclo[24.9.2.1~3,32~.1~3,33~.1~6,9~.1~12,16~.0~18,22~.0~29,36~.0~31,35~]hentetracontan-24-one (non-preferred name)
C40 H59 N O11
UFNVPOGXISZXJD-JBQZKEIOSA-N
 Ligand Interaction
GTP
Query on GTP

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A, C
GUANOSINE-5'-TRIPHOSPHATE
C10 H16 N5 O14 P3
XKMLYUALXHKNFT-UUOKFMHZSA-N
 Ligand Interaction
ACP
Query on ACP

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F
PHOSPHOMETHYLPHOSPHONIC ACID ADENYLATE ESTER
C11 H18 N5 O12 P3
UFZTZBNSLXELAL-IOSLPCCCSA-N
 Ligand Interaction
GDP
Query on GDP

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B, D
GUANOSINE-5'-DIPHOSPHATE
C10 H15 N5 O11 P2
QGWNDRXFNXRZMB-UUOKFMHZSA-N
 Ligand Interaction
MES
Query on MES

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B
2-(N-MORPHOLINO)-ETHANESULFONIC ACID
C6 H13 N O4 S
SXGZJKUKBWWHRA-UHFFFAOYSA-N
 Ligand Interaction
03S
Query on 03S

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B
methanesulfonic acid
C H4 O3 S
AFVFQIVMOAPDHO-UHFFFAOYSA-N
 Ligand Interaction
GOL
Query on GOL

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A, C
GLYCEROL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
 Ligand Interaction
IMD
Query on IMD

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A, B
IMIDAZOLE
C3 H5 N2
RAXXELZNTBOGNW-UHFFFAOYSA-O
 Ligand Interaction
CA
Query on CA

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A, B, C, E
CALCIUM ION
Ca
BHPQYMZQTOCNFJ-UHFFFAOYSA-N
 Ligand Interaction
MG
Query on MG

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A, C, F
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
6K9Kd:  45   nM  Binding MOAD
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.25 Å
  • R-Value Free: 0.220 
  • R-Value Work: 0.181 
  • R-Value Observed: 0.183 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 105.217α = 90
b = 157.134β = 90
c = 182.824γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
XDSdata reduction
XSCALEdata scaling
PHENIXphasing

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Swiss National Science FoundationSwitzerland310030B_138659
Swiss National Science FoundationSwitzerland31003A_166608

Revision History 

  • Version 1.0: 2016-06-29
    Type: Initial release