QRSL1 Inhibitors
Chemical inhibitors of QRSL1 can act through various mechanisms to hinder its role in protein synthesis. For instance, tetracycline targets the 30S subunit of the ribosome, an action that directly impacts the translation process in which QRSL1 plays an integral part through the aminoacylation of tRNAs. Similarly, chloramphenicol exerts its inhibitory effect by binding to the 50S ribosomal subunit, blocking the peptidyl transferase activity crucial for protein elongation, thereby impacting QRSL1's role in the translation process. Puromycin, mimicking an aminoacyl-tRNA, leads to premature termination of the protein chain, disrupting the normal function of QRSL1 by preventing the proper incorporation of tRNAs into the growing polypeptide chain. Cycloheximide specifically obstructs the translocation step within eukaryotic cells, thus affecting the translational machinery to which QRSL1 contributes.
Further disrupting the function of QRSL1, ricin inactivates ribosomes by modifying the rRNA, negating the ribosomal functions that QRSL1-modified tRNAs rely on during protein synthesis. α-Amanitin inhibits RNA polymerase II, which cuts down the overall mRNA pool, indirectly reducing QRSL1's involvement in translation due to less demand for its tRNA modification function. Anisomycin impacts the process by interfering with the peptidyl transferase reaction, which is crucial during the elongation step where QRSL1-aminoacylated tRNAs are involved. Harringtonine disrupts the initial chain elongation step on the ribosome, which requires QRSL1-modified tRNAs for the translation process to proceed. Fusidic acid hinders EF-G turnover, stalling the protein synthesis process and in turn, reducing the functional demand for QRSL1 activity. Sparsomycin and emetine also contribute to the inhibition of QRSL1 by targeting the 50S ribosomal subunit to inhibit peptidyl transferase and by obstructing ribosomal translocation along mRNA, respectively. Lastly, diphtheria toxin targets EF-2, impeding the translocation step of protein synthesis and thus, indirectly limiting the role of QRSL1 in the translation process.
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| Product Name | CAS # | Catalog # | QUANTITY | Price | Citations | RATING |
|---|---|---|---|---|---|---|
Tetracycline | 60-54-8 | sc-205858 sc-205858A sc-205858B sc-205858C sc-205858D | 10 g 25 g 100 g 500 g 1 kg | $63.00 $94.00 $270.00 $417.00 $634.00 | 6 | |
Tetracycline binds to the 30S subunit of the bacterial ribosome, which would inhibit QRSL1 by hindering its role in translation since QRSL1 is involved in the aminoacylation of tRNAs, a step necessary for protein synthesis. | ||||||
Chloramphenicol | 56-75-7 | sc-3594 | 25 g | $90.00 | 10 | |
Chloramphenicol inhibits bacterial protein synthesis by blocking the peptidyl transferase activity on the 50S ribosomal subunit, which would inhibit QRSL1 by impeding the translation process that QRSL1 facilitates through tRNA modification. | ||||||
Puromycin | 53-79-2 | sc-205821 sc-205821A | 10 mg 25 mg | $166.00 $322.00 | 436 | |
Puromycin causes premature chain termination during translation by acting as an analog of aminoacyl-tRNA, which would inhibit QRSL1's function in translation by preventing proper tRNA incorporation and peptide elongation. | ||||||
Cycloheximide | 66-81-9 | sc-3508B sc-3508 sc-3508A | 100 mg 1 g 5 g | $41.00 $84.00 $275.00 | 127 | |
Cycloheximide blocks the translocation step in eukaryotic protein synthesis on the 80S ribosome, which would inhibit QRSL1 by affecting the translational machinery that QRSL1-dependent tRNAs serve. | ||||||
α-Amanitin | 23109-05-9 | sc-202440 sc-202440A | 1 mg 5 mg | $269.00 $1050.00 | 26 | |
α-Amanitin inhibits RNA polymerase II, which would inhibit QRSL1 by reducing the overall pool of mRNA available for translation, indirectly reducing the need for QRSL1's tRNA modification function. | ||||||
Anisomycin | 22862-76-6 | sc-3524 sc-3524A | 5 mg 50 mg | $99.00 $259.00 | 36 | |
Anisomycin interferes with the peptidyl transferase reaction on ribosomes, which would inhibit QRSL1 by impeding the elongation step in protein synthesis where QRSL1's aminoacylation activity is critical. | ||||||
Harringtonin | 26833-85-2 | sc-204771 sc-204771A sc-204771B sc-204771C sc-204771D | 5 mg 10 mg 25 mg 50 mg 100 mg | $250.00 $367.00 $548.00 $730.00 $980.00 | 30 | |
Harringtonine inhibits protein synthesis by preventing the initial chain elongation step on ribosomes, which would inhibit QRSL1 by blocking the translation process in which QRSL1-aminoacylated tRNAs are required. | ||||||
Fusidic acid | 6990-06-3 | sc-215065 | 1 g | $292.00 | ||
Fusidic acid prevents the turnover of elongation factor G (EF-G) from the ribosome, which would inhibit QRSL1 by stalling protein synthesis, thus reducing the functional demand for QRSL1's tRNA modification activity. | ||||||
Emetine | 483-18-1 | sc-470668 sc-470668A sc-470668B sc-470668C | 1 mg 10 mg 50 mg 100 mg | $440.00 $900.00 $1400.00 $2502.00 | ||
Emetine inhibits protein synthesis by blocking the movement of ribosomes along mRNA, which would inhibit QRSL1 by reducing the translation process that requires the involvement of QRSL1-modified tRNAs. | ||||||
Diphtheria Toxin, CRM Mutant | 92092-36-9 | sc-203924 | 0.25 mg | $652.00 | 1 | |
Diphtheria toxin inactivates elongation factor 2 (EF-2) by ADP-ribosylation, which would inhibit QRSL1 by blocking the translocation step in protein synthesis, thereby reducing the demand for QRSL1's function in tRNA aminoacylation and subsequent translation. | ||||||