LL-37: the human cathelicidin peptide

LL-37 is a well-studied antimicrobial peptide central to innate-immunity research. This overview describes its structure and handling, with no therapeutic or dosing claims.

What it is

LL-37 is a 37-amino-acid peptide and the only cathelicidin-derived antimicrobial peptide found in humans. It is studied as part of the body's host-defence system.

Why it is studied

LL-37 appears widely in antimicrobial and immune-modulation literature as a research tool. As always, the findings live in the studies and are not extended to any human context here.

Handling notes

• Supplied lyophilised; reconstitute gently without shaking.
• Keep the dry solid sealed, cold and dark.
• Refrigerate after reconstitution and aliquot to avoid freeze-thaw cycles.

For in-vitro research use only. Not for human or veterinary use.