Side-by-Side Comparison · 2026

Esculentin vs Protegrin

Esculentin vs Protegrin — mechanism, half-life, dosing, and research status compared. Which is right for your protocol?

Esculentin
Antimicrobial Peptide

Esculentins are the longest known naturally occurring antimicrobial peptides, isolated from the skin of the water frog Rana esculenta. At 46 amino acids, they form two amphipathic helices connected by a short linker....

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Protegrin
Antimicrobial Peptide

Protegrins are disulfide-bridged beta-hairpin antimicrobial peptides isolated from porcine leukocytes. Protegrin-1 (PG-1) is one of the most potent AMPs against both Gram-positive and Gram-negative bacteria, including multidrug-resistant organisms....

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Key Parameters
Parameter Esculentin Protegrin
Category Antimicrobial Peptide Antimicrobial Peptide
Research Preclinical Phase III (failed)
Half-Life Minutes (proteolytic) Hours (disulfide stabilized)
Typical Dose N/A N/A
Frequency N/A N/A
Route Research only Topical / Rinse
FDA Status Not approved Not approved

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Frequently Asked Questions
What is the difference between Esculentin and Protegrin?
Esculentin: Esculentins are the longest known naturally occurring antimicrobial peptides, isolated from the skin of the water frog Rana esculenta. At 46 amino acids, they form two amphipathic helices connected by... Protegrin: Protegrins are disulfide-bridged beta-hairpin antimicrobial peptides isolated from porcine leukocytes. Protegrin-1 (PG-1) is one of the most potent AMPs against both Gram-positive and Gram-negative ba...
Which has a longer half-life, Esculentin or Protegrin?
Esculentin half-life: Minutes (proteolytic). Protegrin half-life: Hours (disulfide stabilized).
Can you stack Esculentin and Protegrin?
Esculentin and Protegrin are in the same category and used together in research protocols. Always consult relevant literature and follow appropriate guidelines.

For research use only. Not medical advice. ASCEND does not conduct or endorse any specific research protocol. Always consult relevant scientific literature and regulatory guidelines.