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maitansine

n. (alternative form of maytansine English)

Wikipedia
Maitansine

Maitansine ( INN), or maytansine ( USAN), is a cytotoxic agent. It inhibits the assembly of microtubules by binding to tubulin at the rhizoxin binding site.

It is a macrolide of the ansamycin type and can be isolated from plants of the genus Maytenus.

Derivatives are known as maytansinoids.