4TUY

Tubulin-Rhizoxin complex


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.1 Å
  • R-Value Free: 0.217 
  • R-Value Work: 0.184 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

A new tubulin-binding site and pharmacophore for microtubule-destabilizing anticancer drugs.

Prota, A.E.Bargsten, K.Diaz, J.F.Marsh, M.Cuevas, C.Liniger, M.Neuhaus, C.Andreu, J.M.Altmann, K.H.Steinmetz, M.O.

(2014) Proc.Natl.Acad.Sci.USA 111: 13817-13821

  • DOI: 10.1073/pnas.1408124111
  • Primary Citation of Related Structures:  4TV8, 4TV9

  • PubMed Abstract: 
  • The recent success of antibody-drug conjugates (ADCs) in the treatment of cancer has led to a revived interest in microtubule-destabilizing agents. Here, we determined the high-resolution crystal structure of the complex between tubulin and maytansin ...

    The recent success of antibody-drug conjugates (ADCs) in the treatment of cancer has led to a revived interest in microtubule-destabilizing agents. Here, we determined the high-resolution crystal structure of the complex between tubulin and maytansine, which is part of an ADC that is approved by the US Food and Drug Administration (FDA) for the treatment of advanced breast cancer. We found that the drug binds to a site on β-tubulin that is distinct from the vinca domain and that blocks the formation of longitudinal tubulin interactions in microtubules. We also solved crystal structures of tubulin in complex with both a variant of rhizoxin and the phase 1 drug PM060184. Consistent with biochemical and mutagenesis data, we found that the two compounds bound to the same site as maytansine and that the structures revealed a common pharmacophore for the three ligands. Our results delineate a distinct molecular mechanism of action for the inhibition of microtubule assembly by clinically relevant agents. They further provide a structural basis for the rational design of potent microtubule-destabilizing agents, thus opening opportunities for the development of next-generation ADCs for the treatment of cancer.


    Organizational Affiliation

    Department of Biology and Chemistry, Laboratory of Biomolecular Research, Paul Scherrer Institut, 5232 Villigen PSI, Switzerland;




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Tubulin alpha-1B chain
A, C
451Bos taurusN/A
Find proteins for P81947 (Bos taurus)
Go to UniProtKB:  P81947
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Tubulin beta-2B chain
B, D
445Bos taurusGene Names: TUBB2B
Find proteins for Q6B856 (Bos taurus)
Go to Gene View: TUBB2B
Go to UniProtKB:  Q6B856
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
Stathmin-4
E
143Rattus norvegicusGene Names: Stmn4
Find proteins for P63043 (Rattus norvegicus)
Go to UniProtKB:  P63043
Entity ID: 4
MoleculeChainsSequence LengthOrganismDetails
Tubulin-Tyrosine Ligase
F
384Gallus gallusGene Names: TTL
Find proteins for E1BQ43 (Gallus gallus)
Go to Gene View: TTL
Go to UniProtKB:  E1BQ43
Small Molecules
Ligands 7 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
GDP
Query on GDP

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Download CCD File 
B, D
GUANOSINE-5'-DIPHOSPHATE
C10 H15 N5 O11 P2
QGWNDRXFNXRZMB-UUOKFMHZSA-N
 Ligand Interaction
36L
Query on 36L

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Download CCD File 
D
(1R,2R,3E,5R,7R,8S,10S,13E,16R)-8-hydroxy-10-[(2S,3R,4E,6E,8E)-3-methoxy-4,8-dimethyl-9-(2-methyl-1,3-oxazol-4-yl)nona-4,6,8-trien-2-yl]-2,7-dimethyl-6,11,19-trioxatricyclo[14.3.1.0~5,7~]icosa-3,13-diene-12,18-dione
Rhizoxin
C35 H47 N O8
HZCHLCHTTHJHIL-OAMJKPACSA-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
CA
Query on CA

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

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Download CCD File 
A, B, C, D, F
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-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
ACP
Query on ACP

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Download CCD File 
F
PHOSPHOMETHYLPHOSPHONIC ACID ADENYLATE ESTER
ADENOSINE-5'-[BETA, GAMMA-METHYLENE]TRIPHOSPHATE
C11 H18 N5 O12 P3
UFZTZBNSLXELAL-IOSLPCCCSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.1 Å
  • R-Value Free: 0.217 
  • R-Value Work: 0.184 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 104.310α = 90.00
b = 156.920β = 90.00
c = 181.120γ = 90.00
Software Package:
Software NamePurpose
PHENIXrefinement
PHASERphasing
XDSdata reduction
XSCALEdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History & Funding Information

Deposition Data


Funding OrganizationCountryGrant Number
Swiss National Science FoundationSwitzerland310030B_138659
Ministero de Economia y CompetitividadSpainBIO2010-16351
Ministero de Economia y CompetitividadSpainBFU2011-23416
Comunidad Autonoma de MadridSpainS201/BMD-2457
Comunidad Autonoma de MadridSpainS2010/BMD-2353

Revision History 

  • Version 1.0: 2014-08-27
    Type: Initial release
  • Version 1.1: 2014-10-01
    Type: Database references