Biological Assembly 1  

 3D View: Structure | Ligand Interaction

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Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 2-mer - AB Pseudo Symmetry: Asymmetric - C1 
Pseudo Stoichiometry: Homo 2-mer -A2 

Biological assembly 1 assigned by authors and generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 98270.10 
• Atom Count: 6672 
• Residue Count: 867 
• Unique protein chains: 2

1TVK

The binding mode of epothilone A on a,b-tubulin by electron crystallography

• DOI: 10.2210/pdb1TVK/pdb

• Classification: CELL CYCLE STRUCTURAL PROTEIN
• Organism(s): Bos taurus


• Deposited: 2004-06-29 Released: 2004-09-14 
• Deposition Author(s): Nettles, J.H., Li, H., Cornett, B., Krahn, J.M., Snyder, J.P., Downing, K.H.

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Experimental Data Snapshot

• Method: ELECTRON CRYSTALLOGRAPHY
• Resolution: 2.89 Å
• Aggregation State: 2D ARRAY 
• Reconstruction Method: CRYSTALLOGRAPHY 

Literature

The binding mode of epothilone A on alpha,beta-tubulin by electron crystallography

Nettles, J.H., Li, H., Cornett, B., Krahn, J.M., Snyder, J.P., Downing, K.H.

(2004) Science 305: 866-869

• PubMed: 15297674 
• DOI: 10.1126/science.1099190


• PubMed Abstract: 
  

The structure of epothilone A, bound to alpha,beta-tubulin in zinc-stabilized sheets, was determined by a combination of electron crystallography at 2.89 angstrom resolution and nuclear magnetic resonance-based conformational analysis. The complex explains both the broad-based epothilone structure-activity relationship and the known mutational resistance profile. Comparison with Taxol shows that the longstanding expectation of a common pharmacophore is not met, because each ligand exploits the tubulin-binding pocket in a unique and independent manner.

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Organizational Affiliation: 

Molecular and Systems Pharmacology, Emory University, Atlanta, GA 30322, USA.

Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details
Tubulin alpha chain	A	440	Bos taurus	Mutation(s): 0  Gene Names: TUBA1D
Find proteins for Q2HJ86 (Bos taurus) Go to UniProtKB:  Q2HJ86

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details
Tubulin beta chain	B	427	Bos taurus	Mutation(s): 0  Gene Names: TUBB2B
Find proteins for Q6B856 (Bos taurus) Go to Gene View: TUBB2B Go to UniProtKB:  Q6B856

Small Molecules

Ligands 3 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram & Interactions
GDP	B	GUANOSINE-5'-DIPHOSPHATE C10 H15 N5 O11 P2 QGWNDRXFNXRZMB-UUOKFMHZSA-N
EP	B	EPOTHILONE A C26 H39 N O6 S HESCAJZNRMSMJG-KKQRBIROSA-N
GTP	A	GUANOSINE-5'-TRIPHOSPHATE C10 H16 N5 O14 P3 XKMLYUALXHKNFT-UUOKFMHZSA-N

Experimental Data & Validation

Experimental Data

• Method: ELECTRON CRYSTALLOGRAPHY
• Resolution: 2.89 Å
• Aggregation State: 2D ARRAY 
• Reconstruction Method: CRYSTALLOGRAPHY 

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2004-06-29 
• Released Date: 2004-09-14 
• Deposition Author(s): Nettles, J.H., Li, H., Cornett, B., Krahn, J.M., Snyder, J.P., Downing, K.H.

Revision History 

• Version 1.0: 2004-09-14
  Type: Initial release
• Version 1.1: 2008-04-30
  Type: Version format compliance
• Version 1.2: 2011-07-13
  Type: Version format compliance
• Version 1.3: 2018-07-18
  Type: Author supporting evidence, Data collection