Buy LL-37 UK
Peptaro Research Team
LL-37 is the only human cathelicidin antimicrobial peptide, 37 residues long and studied widely in innate-immunity and membrane research. We supply a 5mg vial with batch data.
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What is LL-37?
LL-37 is the active C-terminal fragment of the hCAP18 precursor and takes its name from the two leucines at the start of its 37-residue chain. It forms an amphipathic alpha-helix in membranes, which is what drives its activity against bacterial membranes in vitro and makes it a model for helical antimicrobial peptides. It also appears in studies of immune-cell chemotaxis and epithelial signalling. At 37 residues it is among the longer peptides we list, so analytical identity and purity checks are particularly informative. Supplied for in-vitro laboratory research only, not for human or veterinary use.
Published research on LL-37 cathelicidin antimicrobial peptide is indexed on PubMed.
Intended Use: Strictly for in-vitro laboratory research. Not for use in humans or animals. This product has not been evaluated by the MHRA or FDA.
Research Areas
- Antimicrobial peptide and membrane interaction models
- Innate immunity and cathelicidin biology
- Amphipathic helix structure studies
- Epithelial and immune-cell signalling in culture
Why buy LL-37 from Peptaro
Batch-specific test results
Check the reported method, result and testing source for each batch.
Published batch certificates
Review available lab reports and CoAs on the product page.
UK cold-chain storage
Stored at -20°C from arrival through dispatch.
Same-day UK dispatch
Royal Mail Tracked 24, free tracked UK delivery on every order.
Research use only. For in-vitro laboratory research use only. Not for human or veterinary use. This article summarises published preclinical literature for laboratory researchers and is not medical advice.
Frequently asked questions
Why is it called LL-37?
It begins with two leucine residues (L, L) and is 37 amino acids long.
What purity is recorded for the LL-37 batch?
Batch UKPL-9509 is recorded at 99.97%, with the certificate linked on the product page.
Is LL-37 an antibiotic?
It is studied as an antimicrobial peptide in laboratory models. We sell it purely as a research reagent and make no treatment or medical claims.
How is LL-37 stored?
As a lyophilised powder it is held cold, at -20°C before dispatch in our case, and kept away from light and moisture.
