Exportin T Activators
Exportin T activators belong to a chemical class that interacts with the nuclear export pathway, specifically targeting a protein known as Exportin T (ExpT). Exportin T is a member of the karyopherin family of nuclear transport receptors, which are responsible for the transport of various molecules across the nuclear envelope. In the case of Exportin T, its primary function is to mediate the nuclear export of tRNAs from the nucleus to the cytoplasm, a critical step in protein synthesis. The activators of Exportin T are molecules that enhance the function of Exportin T, thereby potentially influencing the efficiency and regulation of tRNA transport. These activators bind to Exportin T, causing conformational changes that can increase its affinity for tRNAs or alter its interaction with the RanGTPase system, which provides the necessary energy for transport through the nuclear pore complex.
The precise mechanism of action of Exportin T activators can vary, with some influencing the recognition and binding of tRNA, while others may affect the release of tRNA into the cytoplasm. The activity of these activators is critical for maintaining the balance of tRNA populations in the cytoplasm, ensuring that protein translation processes have access to the necessary components. This balance is particularly important under various physiological conditions where the demand for protein synthesis might change. The regulation of Exportin T by its activators is a fine-tuned process, which is essential for cellular homeostasis. Disruptions in the function of Exportin T or its activators can lead to an imbalance in tRNA export, which in turn can affect the overall process of protein synthesis. The study of Exportin T activators thus provides valuable insights into the fundamental processes of cellular function and the intricate mechanisms that maintain the flow of genetic information from the nucleus to the ribosome.
| Product Name | CAS # | Catalog # | QUANTITY | Price | Citations | RATING |
|---|---|---|---|---|---|---|
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 is a specific inhibitor of the nuclear export protein CRM1 (exportin 1). By inhibiting CRM1, Leptomycin B causes the accumulation of protein cargoes within the nucleus, indirectly enhancing the activity of Exportin T (XPOT) as it may compensate for CRM1 inhibition by facilitating the nuclear export of different RNA species, including tRNA and mRNA. | ||||||
Pramoxine hydrochloride | 637-58-1 | sc-264141 | 10 g | $44.00 | ||
This compound is a tyrosine phosphatase inhibitor and can lead to increased phosphorylation levels of cellular proteins. Enhanced phosphorylation can impact nucleo-cytoplasmic transport processes, potentially increasing the functional demand for Exportin T in the export of phosphorylated substrates. | ||||||
Ribavirin | 36791-04-5 | sc-203238 sc-203238A sc-203238B | 10 mg 100 mg 5 g | $63.00 $110.00 $214.00 | 1 | |
Ribavirin is a nucleoside inhibitor that exhibits antiviral activity. It can alter nucleotide pools and RNA metabolism, potentially enhancing the functional activity of Exportin T by increasing its substrate specificity for modified RNA molecules during viral infection. | ||||||
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 and inhibits RNA synthesis. This binding can cause a backlog of RNA processing and modification machinery, potentially necessitating increased Exportin T function to regulate the export of non-coding RNA and mRNA. | ||||||
Ellipticine | 519-23-3 | sc-200878 sc-200878A | 10 mg 50 mg | $145.00 $569.00 | 4 | |
Ellipticine is an alkaloid that intercalates with DNA and inhibits topoisomerase II. By causing DNA damage and affecting the cell cycle, it may increase the requirement for Exportin T function in the export of stress response mRNAs and non-coding RNAs during DNA repair processes. | ||||||
BMH-21 | 896705-16-1 | sc-507460 | 10 mg | $165.00 | ||
BMH-21 is a small molecule that binds to RNA polymerase I and inhibits ribosomal RNA synthesis. This inhibition can elevate the need for Exportin T to export the few mature ribosomal subunits and associated mRNAs that are still produced under these conditions. | ||||||
Homoharringtonine | 26833-87-4 | sc-202652 sc-202652A sc-202652B | 1 mg 5 mg 10 mg | $52.00 $125.00 $182.00 | 11 | |
Homoharringtonine is a protein synthesis inhibitor that blocks the initial elongation step of translation. By inhibiting protein synthesis, it can lead to a build-up of mRNA in the nucleus, potentially increasing the functional activity of Exportin T in the export of mRNA to the cytoplasm. | ||||||
Tunicamycin | 11089-65-9 | sc-3506A sc-3506 | 5 mg 10 mg | $172.00 $305.00 | 66 | |
Tautomycin is a potent inhibitor of protein phosphatases 1 and 2A. Its activity can lead to altered phosphorylation states of nuclear proteins, possibly enhancing the need for Exportin T in the export of specific phosphorylated proteins or RNAs. | ||||||
Triptolide | 38748-32-2 | sc-200122 sc-200122A | 1 mg 5 mg | $90.00 $204.00 | 13 | |
Triptolide is a diterpene triepoxide that inhibits RNA polymerase II. The inhibition of transcription can upregulate stress response pathways that may require Exportin T to facilitate the export of specific stress-related mRNAs or non-coding RNAs. | ||||||
Etoposide (VP-16) | 33419-42-0 | sc-3512B sc-3512 sc-3512A | 10 mg 100 mg 500 mg | $51.00 $231.00 $523.00 | 63 | |
Etoposide is a chemotherapeutic agent that causes DNA strand breaks by inhibiting topoisomerase II. This DNA damage response can increase the functional activity of Exportin T as the cell may need to export various RNAs related to DNA damage repair mechanisms. | ||||||