Thymic & Immune
VIP
Vasoactive intestinal peptide
Reference entry · not stocked
11 more in Thymic & ImmuneIdentity
- Class
- Thymic & Immune
- Molecular weight
- 3326 Da
- Residues
- 28
- Heavy atoms
- 234
- Reference slug
- vip
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
Twenty-eight residues sharing the same architecture as PACAP and secretin: a structured N-terminus and a helical tail. Ends in an amide.
Sequence
| 1 | HSDAVFTDNY TRLRKQMAVK KYLNSILN |
|---|
- Three-letter code
- His-Ser-Asp-Ala-Val-Phe-Thr-Asp-Asn-Tyr-Thr-Arg-Leu-Arg-Lys-Gln-Met-Ala-Val-Lys-Lys-Tyr-Leu-Asn-Ser-Ile-Leu-Asn
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. VIP is built from 15 of the twenty standard amino acids across 28 positions.
By residue
| Residue | Code | Count | Share |
|---|---|---|---|
| Lysine | K · Lys | 3 | 10.7% |
| Leucine | L · Leu | 3 | 10.7% |
| Asparagine | N · Asn | 3 | 10.7% |
| Alanine | A · Ala | 2 | 7.1% |
| Aspartic acid | D · Asp | 2 | 7.1% |
| Arginine | R · Arg | 2 | 7.1% |
| Serine | S · Ser | 2 | 7.1% |
| Threonine | T · Thr | 2 | 7.1% |
| Valine | V · Val | 2 | 7.1% |
| Tyrosine | Y · Tyr | 2 | 7.1% |
| Phenylalanine | F · Phe | 1 | 3.6% |
| Histidine | H · His | 1 | 3.6% |
| Isoleucine | I · Ile | 1 | 3.6% |
| Methionine | M · Met | 1 | 3.6% |
| Glutamine | Q · Gln | 1 | 3.6% |
By side-chain class
Nonpolar, aliphatic
9 · 32.1%
A I L M V
Aromatic
3 · 10.7%
F Y
Polar, uncharged
8 · 28.6%
N Q S T
Positively charged
6 · 21.4%
H K R
Negatively charged
2 · 7.1%
D
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.
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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.