Source comparison
Comparison of Major Kisspeptin Fragments
To help clarify the differences between the major forms of kisspeptin used in research, we've put together this quick comparison table. It highlights why a researcher might choose one fragment over another for a specific study design. Amino Acid Length 54 amin
This comparison does not assign a generated winner or score.
- To help clarify the differences between the major forms of kisspeptin used in research, we've put together this quick comparison table. It highlights why a researcher might choose one fragment over another for a specific study design.
- Amino Acid Length
- 54 amino acids
- 14 amino acids
- 10 amino acids
- Biological Half-Life
- Longer (several hours in humans)
- Shorter (minutes)
- Very short (minutes)
- Potency at Kiss1R
- High
- Very High
- Highest
- Primary Research Use
- Studies requiring sustained, long-term activation
- Pulsatile signaling studies, acute activation
- Gold standard for acute, potent activation of Kiss1R
- Key Characteristic
- Represents the main circulating form
- A potent, naturally cleaved fragment
- The minimal, most active C-terminal sequence
- As you can see, while Kp-54 offers a longer duration of action, Kp-10 provides the most potent and direct stimulus to the GPR54 receptor. For experiments designed to measure the immediate downstream effects of receptor activation (like a GnRH pulse), Kisspeptin 10 is often the superior choice.