RPA40 Activators
The class of chemicals known as RPA40 Activators would pertain to molecules that specifically increase the activity of the RPA40 subunit, which is part of the Replication Protein A (RPA) complex. RPA is a eukaryotic DNA-binding protein complex crucial for various aspects of DNA metabolism, including replication, repair, and recombination. The complex itself typically consists of three subunits: RPA70, RPA32, and RPA14, with RPA40 often being used interchangeably with RPA32. Activators of RPA40 would likely enhance the DNA-binding affinity or stability of the RPA complex, possibly by promoting the proper folding of RPA40 or facilitating its integration into the RPA trimer.
The mechanisms by which RPA40 activators would function could be varied. They might interact directly with the RPA40 peptide, stabilizing its structure or inducing conformational changes that result in a higher affinity for DNA substrates. Alternatively, these activators could bind to regulatory domains of RPA40, leading to enhanced interactions with other subunits of the RPA complex or with additional proteins involved in DNA processing. The activators may also act by increasing the expression level of RPA40, thereby indirectly amplifying the activity of the entire RPA complex. The chemical structures of these activators would be designed to specifically target the RPA40 subunit without disrupting the function of other proteins or cellular components.
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| Product Name | CAS # | Catalog # | QUANTITY | Price | Citations | RATING |
|---|---|---|---|---|---|---|
Zinc | 7440-66-6 | sc-213177 | 100 g | $48.00 | ||
Zinc ions are crucial for the structural integrity of many protein complexes; they can stabilize the RNA polymerase I complex and enhance RPA40 activity by improving the polymerase structural conformation necessary for effective transcription initiation and elongation. | ||||||
Magnesium chloride | 7786-30-3 | sc-255260C sc-255260B sc-255260 sc-255260A | 10 g 25 g 100 g 500 g | $28.00 $35.00 $48.00 $125.00 | 2 | |
Magnesium ions are essential cofactors for nucleic acid biochemistry, including RNA synthesis; they assist in the proper formation of the catalytic center of RNA polymerase I, thereby enhancing the functional activity of RPA40 in rRNA transcription. | ||||||
Amiloride • HCl | 2016-88-8 | sc-3578 sc-3578A | 25 mg 100 mg | $22.00 $57.00 | 6 | |
As an indirect modulator of intracellular sodium levels, Amiloride can alter cellular ionic balance and indirectly influence the transcriptional activity of RNA polymerase I by affecting the nuclear ionic environment, which can enhance RPA40 activity. | ||||||
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, as a cAMP analog, activates PKA which can phosphorylate transcription factors involved in the initiation of rRNA transcription, thereby potentially enhancing the function of the RPA40-containing RNA polymerase I. | ||||||
Spermidine | 124-20-9 | sc-215900 sc-215900B sc-215900A | 1 g 25 g 5 g | $57.00 $607.00 $176.00 | ||
Spermidine facilitates chromatin remodeling by inducing hyperacetylation of histones, which can lead to an open chromatin state and enhanced accessibility of DNA to RNA polymerase I, indirectly increasing RPA40 activity. | ||||||
β-Nicotinamide mononucleotide | 1094-61-7 | sc-212376 sc-212376A sc-212376B sc-212376C sc-212376D | 25 mg 100 mg 1 g 2 g 5 g | $110.00 $150.00 $220.00 $300.00 $600.00 | 4 | |
β-NMN, as a precursor to NAD+, can enhance the activity of sirtuins which are implicated in the positive regulation of RNA polymerase I activity, thereby potentially enhancing RPA40 function. | ||||||
AICAR | 2627-69-2 | sc-200659 sc-200659A sc-200659B | 50 mg 250 mg 1 g | $65.00 $280.00 $400.00 | 48 | |
AICAR activates AMPK which can phosphorylate and thus modify the activity of transcriptional regulators of rRNA synthesis, indirectly enhancing RPA40 activity by facilitating the formation and stabilization of the RNA polymerase I complex. | ||||||
Brefeldin A | 20350-15-6 | sc-200861C sc-200861 sc-200861A sc-200861B | 1 mg 5 mg 25 mg 100 mg | $31.00 $53.00 $124.00 $374.00 | 25 | |
Brefeldin A disrupts transport between the endoplasmic reticulum and Golgi apparatus, leading to cellular stress responses that can include upregulation of rRNA synthesis and thus potential enhancement of RPA40 activity as part of the stress response. | ||||||
Leptomycin B | 87081-35-4 | sc-358688 sc-358688A sc-358688B | 50 µg 500 µg 2.5 mg | $107.00 $416.00 $1248.00 | 35 | |
Leptomycin B inhibits the nuclear export of RNA, which can cause a compensatory increase in rRNA synthesis and potentially enhance RPA40 activity by increasing the demand for RNA polymerase I function. | ||||||
Actinomycin D | 50-76-0 | sc-200906 sc-200906A sc-200906B sc-200906C sc-200906D | 5 mg 25 mg 100 mg 1 g 10 g | $74.00 $243.00 $731.00 $2572.00 $21848.00 | 53 | |
Actinomycin D binds to DNA at the transcription initiation complex, inhibiting RNA polymerase II and III; this competitive inhibition can shunt transcriptional machinery and resources to RNA polymerase I, thereby indirectly enhancing RPA40 function. | ||||||