FBL18 Activators
FBL18, also referred to as F-box/LRR-repeat protein 18, is a pivotal component of the Skp1-Cullin-F-box (SCF) E3 ubiquitin ligase complex, encoded by the FBL18 gene. The F-box proteins, including FBL18, serve as adaptors linking specific substrates to the core SCF complex for ubiquitination and subsequent degradation by the proteasome. This protein belongs to the F-box family characterized by the presence of an F-box motif, essential for interaction with Skp1, a core component of the SCF complex. The FBL18 protein also contains leucine-rich repeats (LRRs), which likely mediate substrate recognition, conferring specificity to the SCF complex. Through its role in targeted protein degradation, FBL18 regulates various cellular processes, such as cell cycle progression, signal transduction, and protein turnover, contributing to cellular homeostasis and function.
Activation of FBL18 involves several intricate mechanisms that enhance its function within the SCF E3 ligase complex. One mechanism involves post-translational modifications (PTMs) such as phosphorylation, which can regulate the activity and stability of FBL18. Phosphorylation of specific residues within FBL18 may promote its interaction with other components of the SCF complex or modulate substrate recognition, thereby facilitating substrate ubiquitination. Additionally, FBL18 activation may be influenced by upstream signaling pathways that converge on the SCF complex. For example, activation of signaling pathways involved in cell cycle regulation or stress response can stimulate FBL18 activity by promoting the assembly of the SCF complex or enhancing its substrate-binding affinity. Moreover, the expression levels of FBL18 and its interacting partners can be regulated transcriptionally or post-transcriptionally, impacting the overall activity of the SCF complex and consequently, FBL18-mediated substrate degradation. Understanding the intricate mechanisms underlying FBL18 activation is crucial for deciphering its physiological roles in cellular processes and may offer insights into strategies targeting protein degradation pathways.
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| Product Name | CAS # | Catalog # | QUANTITY | Price | Citations | RATING |
|---|---|---|---|---|---|---|
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 activates adenylate cyclase, leading to increased levels of cyclic adenosine monophosphate (cAMP) in the cell. Elevated cAMP levels activate protein kinase A (PKA), which phosphorylates and activates FBL18, thereby promoting its functional activation. | ||||||
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 in turn phosphorylates and activates FBL18, resulting in its functional activation. The activation of FBL18 by PMA occurs through the PKC-mediated signaling pathway. | ||||||
Sodium Orthovanadate | 13721-39-6 | sc-3540 sc-3540B sc-3540A | 5 g 10 g 50 g | $49.00 $57.00 $187.00 | 142 | |
Sodium orthovanadate inhibits protein tyrosine phosphatases (PTPs), leading to increased levels of phosphorylated proteins, including FBL18. Phosphorylation activates FBL18, enhancing its functional activity within the cell. | ||||||
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 | |
A23187 is a calcium ionophore that increases intracellular calcium levels. Elevated calcium levels activate calcium/calmodulin-dependent protein kinases (CaMKs), which phosphorylate and activate FBL18, resulting in its functional activation. | ||||||
Dibutyryl-cAMP | 16980-89-5 | sc-201567 sc-201567A sc-201567B sc-201567C | 20 mg 100 mg 500 mg 10 g | $47.00 $136.00 $492.00 $4552.00 | 74 | |
Dibutyryl-cAMP is a cell-permeable analog of cAMP that directly activates protein kinase A (PKA). Activated PKA phosphorylates and activates FBL18, promoting its functional activation within the cell. | ||||||
2-APB | 524-95-8 | sc-201487 sc-201487A | 20 mg 100 mg | $28.00 $53.00 | 37 | |
2-APB activates inositol trisphosphate receptors (IP3Rs), leading to calcium release from intracellular stores. Increased calcium levels activate calcium/calmodulin-dependent protein kinases (CaMKs), which phosphorylate and activate FBL18, promoting its functional activation. | ||||||
Thapsigargin | 67526-95-8 | sc-24017 sc-24017A | 1 mg 5 mg | $136.00 $446.00 | 114 | |
Thapsigargin inhibits sarco/endoplasmic reticulum Ca2+-ATPase (SERCA) pumps, causing calcium release from the endoplasmic reticulum. Elevated calcium levels activate calcium/calmodulin-dependent protein kinases (CaMKs), which phosphorylate and activate FBL18, promoting its functional activation. | ||||||
8-Bromo-cAMP | 76939-46-3 | sc-201564 sc-201564A | 10 mg 50 mg | $126.00 $328.00 | 30 | |
8-Bromo-cAMP is a cell-permeable analog of cAMP that activates protein kinase A (PKA). Activated PKA phosphorylates and activates FBL18, enhancing its functional activity within the cell. | ||||||
Adenosine 3′,5′-cyclic Monophosphate, N6-Benzoyl-, Sodium Salt | 30275-80-0 | sc-300167 | 10 µmol | $324.00 | 1 | |
6-Bnz-cAMP is a cell-permeable analog of cAMP that activates protein kinase A (PKA). Activated PKA phosphorylates and activates FBL18, promoting its functional activation within the cell. | ||||||
4α-Phorbol 12,13-didecanoate | 27536-56-7 | sc-201210 sc-201210A | 1 mg 5 mg | $188.00 $676.00 | 3 | |
4a-PDD activates transient receptor potential vanilloid 4 (TRPV4) channels, leading to calcium influx into the cell. Increased calcium levels activate calcium/calmodulin-dependent protein kinases (CaMKs), which phosphorylate and activate FBL18, promoting its functional activation. | ||||||