5LXS

Tubulin-KS-1-199-32 complex


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.20 Å
  • R-Value Free: 0.227 
  • R-Value Work: 0.186 
  • R-Value Observed: 0.189 

wwPDB Validation   3D Report Full Report



Literature

Structural Basis of Microtubule Stabilization by Discodermolide.

Prota, A.E.Bargsten, K.Redondo-Horcajo, M.Smith, A.B.Yang, C.H.McDaid, H.M.Paterson, I.Horwitz, S.B.Fernando Diaz, J.Steinmetz, M.O.

(2017) Chembiochem 18: 905-909

  • DOI: 10.1002/cbic.201600696
  • Primary Citation of Related Structures:  
    5LXT, 5LXS

  • PubMed Abstract: 
  • Microtubule-stabilizing agents (MSAs) are widely used in chemotherapy. Using X-ray crystallography we elucidated the detailed binding modes of two potent MSAs, (+)-discodermolide (DDM) and the DDM-paclitaxel hybrid KS-1-199-32, in the taxane pocket of β- ...

    Microtubule-stabilizing agents (MSAs) are widely used in chemotherapy. Using X-ray crystallography we elucidated the detailed binding modes of two potent MSAs, (+)-discodermolide (DDM) and the DDM-paclitaxel hybrid KS-1-199-32, in the taxane pocket of β-tubulin. The two compounds bind in a very similar hairpin conformation, as previously observed in solution. However, they stabilize the M-loop of β-tubulin differently: KS-1-199-32 induces an M-loop helical conformation that is not observed for DDM. In the context of the microtubule structure, both MSAs connect the β-tubulin helices H6 and H7 and loop S9-S10 with the M-loop. This is similar to the structural effects elicited by epothilone A, but distinct from paclitaxel. Together, our data reveal differential binding mechanisms of DDM and KS-1-199-32 on tubulin.


    Organizational Affiliation

    Laboratory of Biomolecular Research, Department of Biology and Chemistry, Paul Scherrer Institut, OFLC/111, 5232, Villigen PSI, Switzerland.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Tubulin alpha-1B chain AC451Bos 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 chain BD445Bos 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-4 E143Rattus 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 ligase F384Gallus 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 7 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
7AO
Query on 7AO

Download Ideal Coordinates CCD File 
B, D
[(3~{Z},5~{S},6~{S},7~{S},8~{R},9~{S},11~{Z},13~{S},14~{S},15~{S},16~{Z},18~{S})-19-[(2~{S},3~{R},4~{S},5~{R})-3,5-dimethyl-4-oxidanyl-6-oxidanylidene-oxan-2-yl]-5,7,9,11,13,15-hexamethyl-8,14,18-tris(oxidanyl)nonadeca-1,3,11,16-tetraen-6-yl] ~{N}-[3-[(3-azidophenyl)carbonylamino]propyl]carbamate
C43 H65 N5 O9
XHLXKZHSJZBMGZ-FVXUXLCOSA-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

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

Download Ideal Coordinates CCD File 
B
2-(N-MORPHOLINO)-ETHANESULFONIC ACID
C6 H13 N O4 S
SXGZJKUKBWWHRA-UHFFFAOYSA-N
 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, B, C, D, F
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
7AOKa:  93000000   M^-1  Binding MOAD
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.20 Å
  • R-Value Free: 0.227 
  • R-Value Work: 0.186 
  • R-Value Observed: 0.189 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 104.58α = 90
b = 157.8β = 90
c = 179.44γ = 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 and 31003A_166608
Spanish Ministry of Economy and CompetitivenessSpainBIO2013-42984-R and S2010/BMD-2457 BIPEDD2
National Cancer InstituteUnited StatesCA077263
Breast Cancer Research FoundationUnited States--

Revision History 

  • Version 1.0: 2017-09-20
    Type: Initial release