Understand the source comparison
Difference Between KLOW and KPV: Peptide Comparison
The table below summarizes the structural, functional, and practical research differences between KLOW and KPV for laboratory applications. Amino Acid Sequence Lys-Leu-Pro-Trp (tetrapeptide) Lys-Pro-Val (tripeptide) KLOW has one additional amino acid with arom
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This page preserves a source comparison for education. It does not add a rating, recommendation or clinical judgment.
- The table below summarizes the structural, functional, and practical research differences between KLOW and KPV for laboratory applications.
- Amino Acid Sequence
- Lys-Leu-Pro-Trp (tetrapeptide)
- Lys-Pro-Val (tripeptide)
- KLOW has one additional amino acid with aromatic tryptophan
- Molecular Weight
- ~530 Da
- ~341 Da
- KLOW is 55% heavier, affecting diffusion and dosing
- Receptor Selectivity
- MC1R, MC3R, MC4R (broad)
- MC1R, MC3R (selective)
- KPV better for inflammation-specific studies
- cAMP Kinetics
- Rapid peak (15–20 min)
- Sustained elevation (30–90 min)
- KLOW for acute models, KPV for chronic protocols
- Reconstitution Solubility
- 5 mg/mL max (requires warming)
- 10 mg/mL readily
- KPV easier to handle at high concentrations
- Storage Stability (2–8°C)
- 30 days (light-sensitive)
- 30+ days (light-stable)
- KLOW requires amber vials or foil wrap
- Freeze-Thaw Tolerance
- Poor (avoid entirely)
- Moderate (2 cycles max)
- KPV more forgiving for multi-use protocols