1TVK

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

Summary for 1TVK

• Entry DOI: 10.2210/pdb1tvk/pdb
• Related: 1JFF 1TUB
• Descriptor: Tubulin alpha chain, Tubulin beta chain, GUANOSINE-5'-TRIPHOSPHATE, ... (5 entities in total)
• Functional Keywords: epothilone; taxol; ligand interactions, cell cycle, structural protein
• Biological source: Bos taurus (cattle); More
• Total number of polymer chains: 2
• Total formula weight: 98270.10

Authors

Nettles, J.H.,Li, H.,Cornett, B.,Krahn, J.M.,Snyder, J.P.,Downing, K.H. (deposition date: 2004-06-29, release date: 2004-09-14, Last modification date: 2023-08-23)

Primary citation

Nettles, J.H.,Li, H.,Cornett, B.,Krahn, J.M.,Snyder, J.P.,Downing, K.H.
The binding mode of epothilone A on alpha,beta-tubulin by electron crystallography
Science, 305:866-869, 2004

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.

PubMed: 15297674
DOI: 10.1126/science.1099190

Experimental method

ELECTRON CRYSTALLOGRAPHY (2.89 Å)