Multichaperone

The complex containing Cdc37 and p23 is thought to be the primary stable form, and the HSP70- and HOP-associated complex is another proteasome-targeting form that induces ubiquitin-proteasome degradation [45, 46 ]. 17-AAG is an ansamycin antibiotic that binds to HSP90 and inhibits the formation of the stabilized HSP90-client protein complex, resulting in the accumulation of the proteasome-targeting HSP90-based multichaperone.