Description
LL-37 is a synthetic 37-amino-acid research peptide corresponding to the active fragment of human cathelicidin (hCAP18). It is supplied as a high-purity lyophilized powder for laboratory use only.
The compound is typically described by the sequence Leu-Leu-Gly-Asp-Phe-Phe-Arg-Lys-Ser-Lys-Glu-Lys-Ile-Gly-Lys-Glu-Phe-Lys-Arg-Ile-Val-Gln-Arg-Ile-Lys-Asp-Phe-Leu-Arg-Asn-Leu-Val-Pro-Arg-Thr-Glu-Ser. Reported specifications commonly include a molecular weight of approximately 4493 g/mol. Identity and purity are confirmed by HPLC and mass spectrometry.
In laboratory and preclinical research, LL-37 has been investigated for effects on innate-immune and host-defense signaling, including studies of antimicrobial activity, membrane-interaction models, and inflammatory-response pathways in experimental systems. These findings are limited to research settings and do not establish approved medical use.
This material is not approved for human or veterinary use and is not intended for consumption.
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