Identity
- Class
- Neuropeptides
- Molecular weight
- 849 Da
- Residues
- 9
- Heavy atoms
- 60
- Reference slug
- dsip
These are published properties of the molecule, given for identification. Values we cannot confirm are omitted rather than estimated. What these terms mean.
What this compound is
Nine residues with tryptophan at the N-terminus and a run of small residues through the middle. The glycines give the backbone unusual freedom, so an extended conformation is the honest way to draw it.
Sequence
| 1 | WAGGDASGE |
|---|
- Three-letter code
- Trp-Ala-Gly-Gly-Asp-Ala-Ser-Gly-Glu
The one-letter code gives the amino-acid backbone. Terminal modifications, where a compound carries them, are accounted for in the molecular weight above but are not visible in the letters.
Residue composition
Counted directly from the sequence above. DSIP is built from 6 of the twenty standard amino acids across 9 positions.
By residue
| Residue | Code | Count | Share |
|---|---|---|---|
| Glycine | G · Gly | 3 | 33.3% |
| Alanine | A · Ala | 2 | 22.2% |
| Aspartic acid | D · Asp | 1 | 11.1% |
| Glutamic acid | E · Glu | 1 | 11.1% |
| Serine | S · Ser | 1 | 11.1% |
| Tryptophan | W · Trp | 1 | 11.1% |
By side-chain class
Nonpolar, aliphatic
5 · 55.6%
A G
Aromatic
1 · 11.1%
W
Polar, uncharged
1 · 11.1%
S
Negatively charged
2 · 22.2%
D E
Side-chain classes follow the standard grouping of the twenty proteinogenic amino acids. Composition is arithmetic over the published sequence and says nothing about how the molecule behaves.
Primary literature
5 peer-reviewed papers indexed in PubMed that name this compound in the title. Each record was checked against the database for title, journal and year rather than written from memory.
Delta-sleep-inducing peptide (DSIP): a review
Neurosci Biobehav Rev1984PMID 6145137
Delta sleep-inducing peptide (DSIP): a still unresolved riddle
J Neurochem2006PMID 16539679
Delta sleep-inducing peptide
Eur J Anaesthesiol2001PMID 11437870
Delta-sleep-inducing peptide (DSIP): an update
Peptides1986PMID 3550726
Delta-sleep-inducing peptide (DSIP) inhibited CRF-induced ACTH secretion from rat anterior pituitary gland in vitro
Horm Metab Res1986PMID 3017833
Citations are listed so the underlying research can be read directly. They describe laboratory and preclinical work on the molecule. They are not evidence of a benefit, and nothing here is an application, dose, route or outcome.
Reference databases
PubChem
Compound record: Delta Sleep-Inducing Peptide
Resolved from the compound name
PubMed
Indexed literature
Live search for DSIP
Links resolved against the live databases on 2026-08-29.
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Reference entry
This is a reference entry. Sequence, residue count, molecular weight and atom count are published properties of the molecule, given for identification. Nothing on this page describes an application, benefit, dose, route or outcome, and nothing here should be read as an offer to supply or as guidance for use in a person or an animal. Materials sold by PepXtide are for laboratory research use only, are not for human or animal consumption, and have not been evaluated by the FDA.