DSIP
DSIP is a peptide of nine amino acids, first isolated from rabbit blood in 1974.
Where it came from
DSIP was isolated in 1974 by Guido Schoenenberger and Marcel Monnier in Basel, Switzerland, from the blood of rabbits. Its full makeup was published, and it was first made in the lab, in 1977.
Worth knowing
- It is a chain of nine amino acids, weighing about 850 units.
- The name is an abbreviation of the descriptive name the Basel group gave it, based on the brain-wave recordings they took from the animals.
- Almost 50 years later, no gene, parent protein or dedicated receptor (the specific docking site on a cell) has been found for it. A 2006 review called it "a still unresolved riddle".
At a glance
| Detail | Value |
|---|---|
| Chain length | 9 amino acids |
| Chemical formula | C35H48N10O15 |
| Weight of one molecule | 848.8 g/mol |
| Form | Freeze-dried powder |
| Storage | Sealed in a freezer at -20 °C, away from light |
Weight is shown in grams per mole (g/mol), the standard unit chemists use. It's the number a lab checks a sample against to confirm it's the right compound.
Lab reports
Every batch (called a lot) of DSIP is tested by an independent lab. The report shows the lab, the test date, the lot number, how pure the sample is and how much is in the vial. Find them on the Certificates of Analysis page. New to lab reports? Start with How to read a peptide lab report.
The weight above is for the compound on its own. A report may show a slightly higher figure, because the powder also carries a little salt left from manufacturing. Peptide salt forms explains why.
Storage
Keep the vial sealed in a freezer at -20 °C, away from light, and let it warm to room temperature before opening so moisture doesn't get in. More in Storing lyophilized (freeze-dried) peptides in the lab and the Research handling guidelines.
For research use only. Not for human or veterinary use.