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Peptide pt 141

opticalman

Junior Member
Member
hi I have never used peptides. Today I received the pt 141. I would ask you how it should be stored if at room temperature, if I have to put it in the fridge immediately or if I have to put it in the fridge after mixing the peptide with bacteriostatic water. Sorry for the silly questions for some of you.
 

DylanGemelli

Founding Member
Super Moderator
[h=2]Storage Guidelines for Lyophilized Peptides:[/h]The stability of each peptide is unique and is dependent on its sequence. Lyophilized peptides should be stored at -20℃, away from bright light. Most lyophilized peptides are stable for several years under these conditions, however, certain amino acid residues in peptide sequences can thwart long-term stability. Peptides containing Cys, Met, or Trp residues are prone to oxidation and require storage under anaerobic conditions to maintain stability. Peptides containing Asp, Glu, Lys, Arg, or His are prone to moisture absorption from the air, called deliquescence. These peptides should be stored in a dessicator in a tightly capped vial.
In addition, peptides that undergo freeze-thaw cycles are susceptible to degradation. Whenever possible, the amount of peptide required for each experimental set should be pre-determined, and peptides should be aliquoted into separate vials accordingly. Aliquoting reduces the number of freeze-thaw cycles, and reduces the amount of air exposure to the peptide.
[h=2]Storage Guidelines for Peptides in Solution:[/h]The shelf-life of peptides in solution is very limited, much shorter than that of lyophilized peptides. This is especially true for peptides whose sequences contain Cys, Met,Trp, Asp, Gln, and N-terminal Glu. In addition, peptides stored in solution are susceptible to bacterial degradation, therefore GenScript does not recommend storing peptides in solution. However, if storage of your peptide in solution is unavoidable, use sterile buffers at pH5-6 to dissolve your peptide, divide the peptide solution into aliquots, and store the aliquots at -20℃. Avoid freeze-thaw cycles of the aliquots. You may choose to pass your peptide solution through a 0.2 ?m filter to remove potential bacterial contamination from your peptide solution. If you dissolve too much of your peptide, re-lyophilization of the peptide solution will help you to maintain the stability of the excess peptide.
 

opticalman

Junior Member
Member
Hi Dylan, thanks for the answer. I used pt 141, without any side effects like nausea, vomiting, etc. The only problem is that the erections (not spontaneous but stimulated) are painful. It is a real shame that as I have not experienced any side effects, I cannot use the peptide for this reason. How can I go about getting painless erections? Thanks for your help
 

DylanGemelli

Founding Member
Super Moderator
Hi Dylan, thanks for the answer. I used pt 141, without any side effects like nausea, vomiting, etc. The only problem is that the erections (not spontaneous but stimulated) are painful. It is a real shame that as I have not experienced any side effects, I cannot use the peptide for this reason. How can I go about getting painless erections? Thanks for your help
i wouldnt have the slightest idea... just like anything else, thats not for everyone and it likely is just not for you
 

RickRock

Community Leader
VIP Moderator
Hi Dylan, thanks for the answer. I used pt 141, without any side effects like nausea, vomiting, etc. The only problem is that the erections (not spontaneous but stimulated) are painful. It is a real shame that as I have not experienced any side effects, I cannot use the peptide for this reason. How can I go about getting painless erections? Thanks for your help
Try lowering the dosage. It may be too much for you
 
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