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HSP-90 Inhibitors

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A8476 17-(Allylamino)-17-demethoxygeldanamycin ≥98% (HPLC), solid Potent inhibitor of heat shock protein 90 (Hsp90). 17-AAG is a less toxic analog than geldanamycin. It induces apoptosis and displays antitumor effects. 17-AAG inhibits the activity of oncogenic proteins such as N-ras, Ki-ras, c-Akt, and p185erB2.
G3381 Geldanamycin from Streptomyces hygroscopicus ≥98% (HPLC), powder Geldanamycin is a potent antitumor antibiotic active at nanomolar concentration against 60 cell lines.
Geldanamycin binds specifically to the heat shock protein Hsp90 and to its endoplasmic reticulum homologue GP96, and thus interferes with conformational maturation of proteins and the cellular stress response. In addition, Geldanamycin is a potent inhibitor of the nuclear hormone receptor family.
R3530   Rifabutin >98% (HPLC), powder Rifabutin is an antibiotic; antitumor. Rifabutin interferes with HSP-90 molecular chaperone, enhances ubiquitination and protein degradation, and inactivates bacterial RNA polymerase.