Identity
- Class
- Cosmetic Science
- Molecular weight
- 397 Da
- Residues
- 4
- Heavy atoms
- 56
- Reference slug
- oligopeptide-68
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
Four residues, GHK extended at the other end instead. Three variations on the same tripeptide core are now here.
Sequence
| 1 | GHKG |
|---|
- Three-letter code
- Gly-His-Lys-Gly
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. Oligopeptide-68 is built from 3 of the twenty standard amino acids across 4 positions.
By residue
| Residue | Code | Count | Share |
|---|---|---|---|
| Glycine | G · Gly | 2 | 50% |
| Histidine | H · His | 1 | 25% |
| Lysine | K · Lys | 1 | 25% |
By side-chain class
Nonpolar, aliphatic
2 · 50%
G
Positively charged
2 · 50%
H K
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.
Others in Cosmetic Science
GHK-Cu
3 residues · 404 Da
A tripeptide present in human plasma that binds copper(II) with high affinity. The copper is sho…
In our catalogue
Argireline
6 residues · 889 Da
Six residues capped with an acetyl group at one end and an amide at the other, both of which are…
Reference entry
GHK
3 residues · 340 Da
The bare tripeptide, shown without the copper it usually carries. Comparing it with GHK-Cu in th…
Reference entry
Hexapeptide-11
6 residues · 677 Da
Six residues, two prolines and two phenylalanines. The prolines force an extended backbone, so i…
Reference entry
Matrixyl core
5 residues · 564 Da
The five-residue core of palmitoyl pentapeptide-4, a fragment of type I collagen. The palmitoyl…
Reference entry
SNAP-8
8 residues · 1075 Da
Argireline with two more residues on the end, and otherwise the same molecule. Worth seeing besi…
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.