Ect2 Activators
Ect2, or Epithelial Cell Transforming 2, is a guanine nucleotide exchange factor (GEF) protein that plays a crucial role in the regulation of cell division and cytokinesis. Its primary function revolves around the activation of Rho GTPases, particularly RhoA, which are key regulators of the actin cytoskeleton and cell morphology. Ect2 is primarily localized to the cytoplasm during interphase, where it remains inactive. However, upon entry into mitosis, Ect2 undergoes a series of regulatory events that lead to its activation and subsequent translocation to the cell cortex and the midbody, where it exerts its function in cytokinesis.
The activation of Ect2 involves several intricate mechanisms. Firstly, Ect2 is phosphorylated by Cyclin B/Cdk1 complexes during mitosis, leading to its activation. This phosphorylation primes Ect2 for subsequent interactions with other regulatory proteins, such as centralspindlin complex, which further enhance its GEF activity towards RhoA. Additionally, Ect2 is regulated by its binding partners, including MgcRacGAP and RhoGAPs, which fine-tune its activity and localization during cytokinesis. Moreover, Ect2 activity is tightly regulated by subcellular localization, as it needs to be recruited to the cell cortex and the midbody to exert its function in promoting actin polymerization and contractile ring formation. Overall, the activation of Ect2 orchestrates the precise spatial and temporal regulation of RhoA activity during cytokinesis, ensuring the successful completion of cell division.
SEE ALSO...
| Product Name | CAS # | Catalog # | QUANTITY | Price | Citations | RATING |
|---|---|---|---|---|---|---|
Calyculin A | 101932-71-2 | sc-24000 sc-24000A | 10 µg 100 µg | $163.00 $800.00 | 59 | |
Calyculin A is a potent inhibitor of protein phosphatases, particularly protein phosphatase 1 (PP1) and protein phosphatase 2A (PP2A). By inhibiting PP1 and PP2A, Calyculin A indirectly activates Ect2 by preventing its dephosphorylation. | ||||||
Lysophosphatidic Acid | 325465-93-8 | sc-201053 sc-201053A | 5 mg 25 mg | $98.00 $341.00 | 50 | |
Lysophosphatidic Acid (LPA) is a bioactive lipid mediator that activates the Rho GTPase signaling pathway. By binding to specific G protein-coupled receptors (LPA receptors), LPA stimulates the downstream signaling cascades that converge on Ect2. | ||||||
Fasudil, Monohydrochloride Salt | 105628-07-7 | sc-203418 sc-203418A sc-203418B sc-203418C sc-203418D sc-203418E sc-203418F | 10 mg 50 mg 250 mg 1 g 2 g 5 g 10 g | $18.00 $33.00 $87.00 $168.00 $253.00 $496.00 $910.00 | 5 | |
Fasudil is a Rho kinase (ROCK) inhibitor, and paradoxically, its inhibition of ROCK indirectly activates Ect2. ROCK normally phosphorylates and inhibits Ect2, preventing its activation. By blocking ROCK activity, Fasudil relieves this inhibitory phosphorylation, allowing Ect2 to become active and participate in the regulation of Rho GTPases, ultimately promoting cytokinesis and cell division. | ||||||
8-pCPT-2′-O-Me-cAMP | 634207-53-7 | sc-257020 | 1 mg | $306.00 | 5 | |
8-pCPT-2'-O-Me-cAMP-AM is a membrane-permeable analog of cyclic AMP (cAMP) that activates protein kinase A (PKA). PKA, when activated, can phosphorylate and modulate Ect2 activity. By indirectly influencing Ect2 through the cAMP/PKA signaling pathway, this compound contributes to the regulation of Rho GTPases and the initiation of cytokinesis. | ||||||
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 is an activator of protein kinase C (PKC) and can indirectly activate Ect2 by modulating its phosphorylation status. PKC-mediated phosphorylation events contribute to the regulation of Ect2, which in turn influences the activity of Rho GTPases and promotes cytokinesis. | ||||||
GSK-3 Inhibitor IX | 667463-62-9 | sc-202634 sc-202634A sc-202634B | 1 mg 10 mg 50 mg | $58.00 $188.00 $884.00 | 10 | |
This synthetic compound acts as an inhibitor of glycogen synthase kinase-3 (GSK-3), a serine/threonine kinase involved in multiple signaling pathways. By inhibiting GSK-3, this compound indirectly activates Ect2, as GSK-3 can phosphorylate and regulate the activity of Ect2. | ||||||