Magainin 2
Overview
Magainin 2 is a 23-amino acid antimicrobial peptide originally isolated from the skin of the African clawed frog Xenopus laevis. It exerts broad-spectrum antimicrobial activity through membrane disruption, forming pores in bacterial membranes while exhibiting relative selectivity over mammalian cells.
Mechanism of Action
Magainin 2 belongs to the alpha-helical cationic antimicrobial peptide family and has served as a template for numerous synthetic analogs. Its mechanism of action, which is distinct from conventional antibiotics, offers potential against multidrug-resistant pathogens.
Research Summary & Key Findings
Early preclinical studies demonstrated activity against gram-positive and gram-negative bacteria, fungi, and protozoa in vitro and in animal infection models. Clinical development of magainin 2 itself was limited due to modest potency and susceptibility to proteolytic degradation. Derivatives such as pexiganan were subsequently developed to improve stability and therapeutic potential.
Clinical Status
Magainin 2 is in the research phase with limited clinical data in humans. Current evidence is primarily derived from preclinical (animal or in vitro) studies.
Administration Routes
References
Primary literature
- PubMed — "Magainin 2"
Peer-reviewed literature indexed by the National Library of Medicine.
- ClinicalTrials.gov — "Magainin 2"
Registered interventional and observational studies, including status and phase.
- PubChem — "Magainin 2"
Chemical structure, molecular properties, and bioactivity data.
Study-level citations for this compound are being verified against the primary sources before publication. The database queries above return the current indexed literature in the meantime.
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