Peroniin-1.3a is commercially produced in two recombinant forms using distinct expression systems:
Both variants retain the native sequence but differ in expression tags, which are determined during manufacturing .
Peroniin-1.3a is expressed in dorsal skin glands and functions as a defensive peptide against pathogens . While its specific antimicrobial activity remains uncharacterized, transcriptomic studies of L. peronii relatives (e.g., Rhinella schneideri) highlight its classification among AMPs like brevinins and buforins .
In R. schneideri skin gland analyses, peroniin-family peptides showed moderate expression levels:
| AMP Family | Transcripts Per Million (TPM) |
|---|---|
| Buforin | 766.95 |
| Peroniin | 129.53–841.55 |
| Brevinin | 122.99–175.33 |
Peroniin-1.3a specifically registered a TPM of 129.53, indicating constitutive expression in cutaneous secretions .
Reconstitution: Avoid repeated freeze-thaw cycles; working aliquots stored at 4°C are stable for ≤1 week .
Shelf Life: