What is puromycin used for?
Puromycin is an antibiotic that prevents bacterial protein translation. It is utilized as a selective agent in laboratory cell cultures. Puromycin is toxic to both prokaryotic and eukaryotic cells, resulting in significant cell death at appropriate doses.
What does puromycin do in translation?
Puromycin is a tyrosyl-tRNA mimic that blocks translation by labeling and releasing elongating polypeptide chains from translating ribosomes. Puromycin has been used in molecular biology research for decades as a translation inhibitor.
How do you dissolve puromycin?
Preparation Instructions The product is soluble in water (50 mg/ml), yielding a clear, colorless to faint yellow solution. The stock solution may be passed through a 0.22 µm filter and stored in aliquots at –20 °C. It is also soluble in methanol (10 mg/ml).
What do you dilute puromycin with?
If necessary, prepare an aliquot of 1mg/ml puromycin (working concentration) by diluting a 10mg/ml stock 1:10 with sterile water.
What is an Aminonucleoside?
PA (6-dimethylaminopurine, 3-amino-d-ribose) is a purine antagonist with antibiotic activity that inhibits RNA synthesis at the level of the ribosome (Siegrist et al. 1984).
How does puromycin stop translation?
Does puromycin affect eukaryotic cells?
Puromycin is used in cell biology as a selective agent in cell culture systems. It is toxic to prokaryotic and eukaryotic cells.
How much puromycin should I take for selection?
The usual puromycin concentration used is 1-4 ug/ml depending on the cell line. The selection (addition of puromycin to the cell culture media) is usually started around 24 hr following transfection. You can also start the selection at 48 hr depending on the health of your transfected cells.
How long is puromycin stable?
one year
Puromycin is stable for up to three months at room temperature and at least one year at 4°C. For optimal stability and long term storage aqueous solutions can be stored at -20°C.
Why is puromycin essential for the mRNA display technology?
In contrast, the puromycin DNA spacer linker used in mRNA display technology is much smaller comparing to a ribosome. This linker may have less chance to interact with an immobilized selection target. Thus, mRNA display technology is more likely to give less biased results.
What does puromycin do to cells?
Puromycin is a naturally occurring aminonucleoside antibiotic that inhibits protein synthesis by ribosome-catalyzed incorporation into the C-terminus of elongating nascent chains, blocking further extension and resulting in premature termination of translation.
How long does puromycin last?
Puromycin is stable for up to three months at room temperature and at least one year at 4°C. For optimal stability and long term storage aqueous solutions can be stored at -20°C.
When do you add puromycin?
The selection (addition of puromycin to the cell culture media) is usually started around 24 hr following transfection. You can also start the selection at 48 hr depending on the health of your transfected cells.
How do you store puromycin?
Storage and stability: Puromycin is shipped at room temperature. Upon receipt it should be stored at 4°C or -20°C. Puromycin is stable for two years at -20°C, two years at 4°C, and 3 months at room temperature. Avoid repeated freeze-thaw cycles.