Delta-sleep-inducing peptide (DSIP) is a neuropeptide first isolated in 1977 from rabbit brain. It is a nonapeptide with the amino acid sequence Trp-Ala-Gly-Gly-Asp-Ala-Ser-Gly-Glu.
DSIP is known for its role in promoting sleep, particularly slow-wave sleep (SWS), and has been shown to induce delta EEG activity and reduce motor activity in rabbits. Despite its sleep-inducing properties, the exact mechanism of action, precursor peptide, and receptor for DSIP remain unidentified.
DSIP has been found in various tissues, including the hypothalamus, limbic system, pituitary, and peripheral organs, and is thought to interact with NMDA receptors and other neurochemical pathways. It has also been implicated in stress regulation, endocrine modulation, and potential therapeutic applications for conditions like insomnia, epilepsy, and withdrawal syndromes.
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| Other Names | Emideltide, DELTA SLEEP INDUCING PEPTIDE, DSIP nonapeptide |
|---|---|
| IUPAC Name | (2S)-2-[[2-[[(2S)-2-[[(2S)-2-[[(2S)-2-[[2-[[2-[[(2S)-2-[[(2S)-2-amino-3-(1H-indol-3-yl)propanoyl]amino]propanoyl]amino]acetyl]amino]acetyl]amino]-3-carboxypropanoyl]amino]propanoyl]amino]-3-hydroxypropanoyl]amino]acetyl]amino]pentanedioic acid |
| CAS | 62568-57-4 |
| Molecular Weight | 848.8 |
| Molecular Formula | C35H48N10O15 |
| SMILES | C[C@@H](C(=O)NCC(=O)NCC(=O)N[C@@H](CC(=O)O)C(=O)N[C@@H](C)C(=O)N[C@@H](CO)C(=O)NCC(=O)N[C@@H](CCC(=O)O)C(=O)O)NC(=O)[C@H](CC1=CNC2=CC=CC=C21)N |