PPM1H Inhibitors
Chemical inhibitors of protein phosphatase methylesterase-1 (PPM1H) encompass a range of compounds that interfere with the protein's activity by indirectly influencing the cellular balance of serine/threonine phosphatase activity. Okadaic Acid and Calyculin A, for instance, are known for their strong inhibitory effects on protein phosphatases PP1 and PP2A. The inhibition of these phosphatases can lead to a compensatory increase in PPM1H activity due to changes in the cellular environment that necessitate a rebalancing of phosphatase activities. Cantharidin and Tautomycin similarly inhibit PP1 and PP2A, which can result in a functional inhibition of PPM1H. This occurs as the cell adjusts to the inhibited state of PP1 and PP2A, which can indirectly affect PPM1H by altering the competitive landscape of phosphatase activity within the cell.
Other inhibitors like Endothall and Fostriecin primarily target PP2A. The inhibition of this particular phosphatase can also alter the dynamics of PPM1H activity. In the absence of normal PP2A function, the cellular machinery may respond in a way that impacts the functional capacity of PPM1H, despite the compound not directly targeting PPM1H. Substances like Microcystin-LR and Nodularin operate in a similar fashion, with a strong preference for inhibiting PP1 and PP2A, which indirectly modifies PPM1H activity. Cylindrospermopsin, while not as specific as the other inhibitors, can lead to a decrease in PP2A activity, which can, in turn, affect PPM1H. Moreover, Methyl Arachidonyl Fluorophosphonate and similar fluorophosphonate compounds, although they inhibit a broad spectrum of serine/threonine phosphatases, can interfere with PPM1H by binding to its active site, thereby blocking the enzyme's function. These inhibitors collectively illustrate the complex interplay within the cell's phosphatase activities and how altering one component can lead to adjustments in the activity levels of PPM1H.
SEE ALSO...
| Product Name | CAS # | Catalog # | QUANTITY | Price | Citations | RATING |
|---|---|---|---|---|---|---|
Okadaic Acid | 78111-17-8 | sc-3513 sc-3513A sc-3513B | 25 µg 100 µg 1 mg | $291.00 $530.00 $1800.00 | 78 | |
Okadaic acid is a potent inhibitor of protein phosphatases 1 (PP1) and 2A (PP2A), and PPM1H is a member of the PP2C family of Ser/Thr protein phosphatases. Although it has higher selectivity for PP2A, by inhibiting these closely related phosphatases, okadaic acid can lead to a compensatory increase in PPM1H activity, thereby indirectly inhibiting PPM1H by reducing its relative function in the cell. | ||||||
Calyculin A | 101932-71-2 | sc-24000 sc-24000A | 10 µg 100 µg | $163.00 $800.00 | 59 | |
Similar to okadaic acid, Calyculin A is a specific inhibitor of PP1 and PP2A. By inhibiting these phosphatases, the chemical can indirectly inhibit PPM1H by altering the balance of phosphatase activity within the cell, which can lead to a functional inhibition of PPM1H since its relative contribution to dephosphorylation processes would be diminished. | ||||||
Cantharidin | 56-25-7 | sc-201321 sc-201321A | 25 mg 100 mg | $89.00 $279.00 | 6 | |
Cantharidin is an inhibitor of PP2A and PP1. By inhibiting these phosphatases, it could alter the phosphoprotein equilibrium in the cell, potentially leading to a state where PPM1H's activity is functionally inhibited due to the increase in substrate competition or regulatory imbalances caused by the inhibited activity of PP1 and PP2A. | ||||||
Endothall | 145-73-3 | sc-201325 sc-201325A | 20 mg 100 mg | $49.00 $203.00 | 1 | |
Endothall acts as an inhibitor of PP2A. The inhibition of PP2A can lead to upregulated compensatory mechanisms that may include increased activity of other phosphatases. This could indirectly inhibit PPM1H by affecting the overall phosphatase activity within the cell, making the enzymatic landscape less favorable for PPM1H activity. | ||||||
Fostriecin | 87860-39-7 | sc-202160 | 50 µg | $265.00 | 9 | |
Fostriecin selectively inhibits PP2A and PP4, which could affect the activity of PPM1H indirectly by shifting the balance of phosphatase activity in the cell. This shift may reduce the functional capacity of PPM1H to act on its substrates due to an altered phosphatase activity landscape caused by the inhibited function of PP2A and PP4. | ||||||
MAFP | 188404-10-6 | sc-203440 | 5 mg | $219.00 | 4 | |
Methyl arachidonyl fluorophosphonate inhibits a broad range of serine/threonine phosphatases. Although it may not be entirely specific to PPM1H, it can inhibit PPM1H activity by binding to the active site of the enzyme, preventing the dephosphorylation of its substrates. | ||||||