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Oxytocin is a cyclic nonapeptide composed of nine amino acids. Research examines it through neuroendocrine signaling, oxytocin-receptor activation and cellular calcium responses.
The oxytocin receptor
The oxytocin receptor belongs to the G-protein-coupled receptor family. Activation can involve phospholipase C, inositol trisphosphate and changes in intracellular calcium, enabling functional in-vitro assays.
Research endpoints
- oxytocin-receptor affinity and activation
- calcium signaling and downstream responses
- selectivity relative to vasopressin receptors
- stability of the disulfide ring
- enzymatic degradation and analytical identity
Why does selectivity matter?
Oxytocin and vasopressin receptors are structurally related. Experimental interpretation should distinguish binding from full functional activity and use appropriate controls for each receptor subtype.
Related laboratory material
See the neutrally labeled OXT Nonapeptide 5 mg.
Further reading
PubMed: oxytocin receptor signaling
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