Small molecule manage of intracellularSo How Does p97 Work? protein ranges will allow temporal and dose-dependent regulation of protein function. Lately, we produced a strategy to degrade proteins fused to a mutant dehalogenase (HaloTag2) employing modest molecule hydrophobic tags (HyTs). Right here, we introduce a complementary technique to stabilize the same HaloTag2 fusion proteins, leading to a unified program enabling bidirectional How Exactly Does p97 Function? management of cellular protein ranges within a temporal and dose-dependent method. From a smaller molecule screen, we recognized N-(3,5-dichloro-2-ethoxybenzyl)-2H-tetrazol-5-amine as a nano-molar HALoTag2 Stabilizer (HALTS1) that decreases the Hsp70:HaloTag2 interaction, therefore preventing HaloTag2 ubiquitination. Last but not least, we demonstrate the utility on the HyT/HALTS system in probing the physiological part of therapeutic targets by modulating HaloTag2-fused oncogenic H-Ras, which resulted in both the cessation (HyT) or acceleration (HALTS) of cellular transformation. In sum, we current a basic platform to examine protein perform, whereby any protein of curiosity fused to HaloTag2 can be both degraded 10-fold or stabilized 5-fold applying two corresponding How Exactly Does p97 Perform? compounds.