R-PE Inhibitors
Chemical inhibitors of R-Phycoerythrin (R-PE) can interfere with its function via various modes of action, primarily by targeting the cytoskeletal framework that is integral to R-PE's cellular activities. Phalloidin, for instance, binds and stabilizes actin filaments, thereby impeding the dynamic rearrangement of the cytoskeleton that R-PE relies on. This stabilization can lead to a functional inhibition of R-PE, as it limits the protein's ability to interact with the cytoskeletal components as required for its normal activities. Similarly, Cytochalasin D and Latrunculin A both target actin polymerization but through different mechanisms. Cytochalasin D binds to the barbed ends of actin filaments, promoting filament depolymerization, while Latrunculin A sequesters actin monomers, preventing their polymerization into filaments. Such disruptions can undermine the structural integrity of the actin network, leading to an inhibition of R-PE function due to the protein's dependence on a stable cytoskeletal framework for its operations.
Additional compounds such as Jasplakinolide and Chondramide affect R-PE by abnormal actin stabilization, which can lock the cytoskeleton in a rigid state, impeding the necessary flexibility that R-PE requires. Swinholide A, on the other hand, severs actin filaments and thus directly depletes the actin monomer pool, resulting in a breakdown of the actin cytoskeleton and inhibition of R-PE function. Other inhibitors, like Tropolone and Emodin, indirectly affect R-PE by targeting actin-associated enzymes and protein kinases, respectively, which are crucial for the regulation of the actin cytoskeleton. Tropolone binds to and inhibits enzymes that interact with actin, altering actin dynamics, while Emodin inhibits kinases that play a role in cytoskeletal rearrangements. Furthermore, Blebbistatin and ML-7 inhibit proteins involved in actomyosin-driven processes; Blebbistatin inhibits myosin II, and ML-7 targets myosin light chain kinase, both of which are essential for the contractile mechanisms that influence R-PE's cellular functions. Lastly, Y-27632 impedes R-PE by inhibiting ROCK kinase, which is involved in actin filament stability and cell contraction, reflecting on the significance of cytoskeletal integrity for R-PE's function within the cell.
SEE ALSO...
| Product Name | CAS # | Catalog # | QUANTITY | Price | Citations | RATING |
|---|---|---|---|---|---|---|
Phalloidin | 17466-45-4 | sc-202763 | 1 mg | $234.00 | 33 | |
Phalloidin binds to actin filaments, stabilizing them and preventing their disassembly, which is crucial for maintaining the cytoskeleton. Since R-PE is associated with the cytoskeleton due to its role in cell structure, the stabilization of actin filaments by Phalloidin leads to a functional inhibition of R-PE by hindering the dynamic reorganization of the cytoskeleton that R-PE requires for its normal function. | ||||||
Cytochalasin D | 22144-77-0 | sc-201442 sc-201442A | 1 mg 5 mg | $165.00 $486.00 | 64 | |
Cytochalasin D disrupts actin polymerization by binding to the barbed ends of actin filaments, leading to the depolymerization of actin. The disruption of actin filaments inhibits the proper functioning of R-PE, as the protein is dependent on the integrity of the cytoskeleton for its cellular functions. | ||||||
Latrunculin A, Latrunculia magnifica | 76343-93-6 | sc-202691 sc-202691B | 100 µg 500 µg | $265.00 $815.00 | 36 | |
Latrunculin A binds to actin monomers, sequestering them and thus preventing their polymerization into filaments. This actin sequestration inhibits R-PE function by causing a collapse of the cytoskeletal structure necessary for the protein's activity or localization. | ||||||
Jasplakinolide | 102396-24-7 | sc-202191 sc-202191A | 50 µg 100 µg | $184.00 $305.00 | 59 | |
Jasplakinolide promotes actin filament nucleation and stabilizes existing filaments, leading to abnormal actin polymerization. This stabilization can inhibit the function of R-PE by locking the actin cytoskeleton in an overly rigid state, preventing the necessary conformational changes that R-PE relies on to perform its cellular role. | ||||||
Swinholide A, Theonella swinhoei | 95927-67-6 | sc-205914 | 10 µg | $135.00 | ||
Swinholide A severs actin filaments and caps the barbed ends, leading to a depletion of actin monomers and a subsequent breakdown of the actin cytoskeleton. By disrupting the actin network, Swinholide A inhibits R-PE function as it interferes with the cytoskeletal dynamics that are essential for R-PE's role in the cell. | ||||||
Tropolone | 533-75-5 | sc-253808 sc-253808A | 1 g 5 g | $32.00 $109.00 | ||
Tropolone has been shown to bind to and inhibit the function of enzymes that interact with actin, such as actin-depolymerizing factors. By inhibiting these enzymes, Tropolone can indirectly inhibit R-PE by affecting the actin dynamics and stability, which are fundamental to the function of R-PE. | ||||||
Emodin | 518-82-1 | sc-202601 sc-202601A sc-202601B | 50 mg 250 mg 15 g | $105.00 $214.00 $6255.00 | 2 | |
Emodin can inhibit the activity of certain protein kinases that are involved in regulating actin cytoskeleton dynamics. The inhibition of these kinases can indirectly inhibit R-PE by disrupting the signaling pathways that control cytoskeletal rearrangements, which in turn are necessary for the proper functioning of R-PE within the cell. | ||||||
(±)-Blebbistatin | 674289-55-5 | sc-203532B sc-203532 sc-203532A sc-203532C sc-203532D | 5 mg 10 mg 25 mg 50 mg 100 mg | $183.00 $313.00 $464.00 $942.00 $1723.00 | 7 | |
Blebbistatin inhibits myosin II, a motor protein that interacts with actin filaments to generate contractile forces within the cell. Inhibition of myosin II by Blebbistatin can lead to a functional inhibition of R-PE by preventing the actomyosin-driven processes that are crucial for R-PE's role in cellular mechanics and motility. | ||||||
Y-27632, free base | 146986-50-7 | sc-3536 sc-3536A | 5 mg 50 mg | $186.00 $707.00 | 88 | |
Y-27632 is an inhibitor of ROCK kinase, which is involved in regulating the actin cytoskeleton through phosphorylation of various downstream targets. Inhibition of ROCK can lead to a decrease in actin filament stability and cell contraction, which can functionally inhibit R-PE by disrupting the cytoskeletal structure and dynamics necessary for its function. | ||||||
ML-7 hydrochloride | 110448-33-4 | sc-200557 sc-200557A | 10 mg 50 mg | $91.00 $267.00 | 13 | |
ML-7 inhibits myosin light chain kinase (MLCK), which is involved in the phosphorylation of the myosin light chain, a critical step in actin-myosin contraction. By inhibiting MLCK, ML-7 can indirectly inhibit R-PE by impairing the contractile function of the cytoskeleton, thereby affecting the mechanical environment in which R-PE operates. | ||||||