Cosmetic · Pentapeptide
Pentapeptide-1
A synthetic pentapeptide that functions as a nicotinic acetylcholine receptor antagonist, studied for its effects on muscle cell contraction in vitro.
- Length
- 5 amino acids
- Half-life
- Not well characterised
- Mechanism
- This peptide functions as a modulator of the nicotinic acetylcholine receptor, acting as a non-competitive antagonist to reduce ion flow and subsequent cellular responses in neuromuscular models.
- Studied in
- It is investigated in vitro for its effects on muscle cell contraction, often in assays that measure acetylcholine-induced calcium influx in myotubes.
About Pentapeptide-1
Pentapeptide-1 is a synthetic five-amino-acid peptide developed for research into neuromuscular signaling. It acts as a modulator at the post-synaptic membrane of the neuromuscular junction. Its mechanism is distinct from competitive antagonists, as it binds to a site on the nicotinic acetylcholine receptor (nAChR) that is different from the acetylcholine binding site.
Laboratory research focuses on its ability to inhibit muscle cell contraction. In vitro systems, such as innervated primary human skeletal muscle cell cultures, are used to demonstrate its function as a negative allosteric modulator of the nAChR. These studies quantify the reduction in signal transmission and muscle fiber contraction upon peptide application.
Laboratory notes
- This peptide is often compared against competitive antagonists like Tripeptide-3 to differentiate mechanisms of nAChR inhibition.
- Solubility should be verified in the specific culture medium being used, as components may interact with the peptide.
- Ensure accurate and consistent timing in experiments measuring rapid cellular events like calcium influx or muscle contraction.
Storage and reconstitution basics: storage guide.
Questions about Pentapeptide-1
How does the mechanism of Pentapeptide-1 differ from other nAChR antagonists?
Unlike competitive antagonists that block the acetylcholine binding site, Pentapeptide-1 is a non-competitive or allosteric modulator. It binds to a different site on the receptor, changing its conformation to reduce ion channel activity even when acetylcholine is bound.
What is the primary endpoint measured in studies with Pentapeptide-1?
A common endpoint is the reduction of contraction frequency and amplitude in cultured myotubes or isolated muscle tissue preparations following stimulation.
Is this peptide derived from a natural source?
No, Pentapeptide-1 is a synthetically designed peptide sequence created specifically for its receptor modulating properties.
Is Pentapeptide-1 for human use?
No. It is supplied strictly for in-vitro laboratory research and is not for human or animal consumption.
Related research peptides
All products are sold for laboratory research use only. Not for human consumption, not a medicine, not for diagnosing, treating or preventing any condition.