PAFAH1B2 Activators
PAFAH1B2, Platelet-activating factor acetylhydrolase IB subunit beta, is a pivotal enzyme crucially involved in lipid metabolism and cellular signaling pathways. As a member of the phospholipase A2 (PLA2) superfamily, PAFAH1B2 plays a central role in hydrolyzing and inactivating platelet-activating factor (PAF), a potent lipid mediator implicated in various physiological and pathological processes such as inflammation, immune responses, and cardiovascular function. The primary function of PAFAH1B2 lies in regulating the levels of PAF, thus modulating cellular responses mediated by this lipid signaling molecule. PAFAH1B2 is predominantly expressed in tissues characterized by high metabolic activity, including the brain, heart, and skeletal muscle, underscoring its importance in lipid homeostasis and cellular signaling in these organs.
Activation of PAFAH1B2 involves intricate regulatory mechanisms aimed at modulating its catalytic activity and cellular localization. Several signaling pathways and post-translational modifications have been implicated in the activation of PAFAH1B2. For instance, phosphorylation events mediated by protein kinases can enhance PAFAH1B2 activity, leading to increased hydrolysis of PAF and subsequent modulation of cellular responses. Additionally, interaction with regulatory proteins or cofactors may facilitate the recruitment of PAFAH1B2 to specific cellular compartments or lipid microdomains, thereby promoting its enzymatic activity towards PAF substrates. Furthermore, changes in intracellular calcium levels or lipid composition can also influence PAFAH1B2 activation, highlighting the intricate interplay between cellular signaling pathways and lipid metabolism.
SEE ALSO...
| Product Name | CAS # | Catalog # | QUANTITY | Price | Citations | RATING |
|---|---|---|---|---|---|---|
A23187 | 52665-69-7 | sc-3591 sc-3591B sc-3591A sc-3591C | 1 mg 5 mg 10 mg 25 mg | $55.00 $131.00 $203.00 $317.00 | 23 | |
Calcium ionophores like A23187 can increase intracellular calcium levels, which may directly activate PAFAH1B2, as its activity is known to be influenced by Ca2+-dependent signaling pathways. | ||||||
PMA | 16561-29-8 | sc-3576 sc-3576A sc-3576B sc-3576C sc-3576D | 1 mg 5 mg 10 mg 25 mg 100 mg | $41.00 $132.00 $214.00 $500.00 $948.00 | 119 | |
PMA activates protein kinase C (PKC), which can phosphorylate specific substrates and might result in the activation of PAFAH1B2 if it is a downstream target of PKC signaling. | ||||||
Forskolin | 66575-29-9 | sc-3562 sc-3562A sc-3562B sc-3562C sc-3562D | 5 mg 50 mg 1 g 2 g 5 g | $78.00 $153.00 $740.00 $1413.00 $2091.00 | 73 | |
Forskolin elevates intracellular cAMP by activating adenylate cyclase, which in turn can activate PKA. PKA activation may lead to phosphorylation and activation of PAFAH1B2 if it is within the PKA signaling pathway. | ||||||
Ionomycin, free acid | 56092-81-0 | sc-263405 sc-263405A | 1 mg 5 mg | $96.00 $264.00 | 2 | |
Ionomycin is another calcium ionophore that raises intracellular calcium levels, potentially activating PAFAH1B2 through calcium-dependent mechanisms. | ||||||
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 inhibits protein phosphatases PP1 and PP2A, leading to increased phosphorylation levels within the cell, which may include the phosphorylation and activation of PAFAH1B2. | ||||||
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 an inhibitor of protein phosphatases, which could result in the phosphorylation and subsequent activation of PAFAH1B2. | ||||||
1,2-Dioctanoyl-sn-glycerol | 60514-48-9 | sc-202397 sc-202397A | 10 mg 50 mg | $47.00 $254.00 | 2 | |
As an activator of PKC, DAG could initiate a cascade of phosphorylation events that culminate in the activation of PAFAH1B2 if it is a PKC-dependent protein. | ||||||
Thapsigargin | 67526-95-8 | sc-24017 sc-24017A | 1 mg 5 mg | $136.00 $446.00 | 114 | |
Thapsigargin disrupts calcium homeostasis by inhibiting the sarcoplasmic/endoplasmic reticulum Ca2+-ATPase (SERCA), leading to increased cytosolic calcium which may activate PAFAH1B2. | ||||||
Cyclopiazonic Acid | 18172-33-3 | sc-201510 sc-201510A | 10 mg 50 mg | $176.00 $624.00 | 3 | |
Cyclopiazonic acid is an inhibitor of SERCA, similar to thapsigargin, and could therefore raise intracellular calcium levels, potentially resulting in the activation of PAFAH1B2. | ||||||
(±)-Bay K 8644 | 71145-03-4 | sc-203324 sc-203324A sc-203324B | 1 mg 5 mg 50 mg | $84.00 $196.00 $817.00 | ||
Bay K8644 acts as an L-type calcium channel agonist, increasing calcium influx, which could activate PAFAH1B2 through calcium-dependent signaling mechanisms. | ||||||