What Is LL-37?
The human cathelicidin antimicrobial peptide studied for membrane interaction and innate immunity.
01Definition
LL-37 is a immune research compound. The human cathelicidin antimicrobial peptide studied for membrane interaction and innate immunity. It is also known as Cathelicidin antimicrobial peptide; CAP-18.
Sequence · 37-aa cathelicidin fragment
02Research Mechanism
LL-37 is the only human cathelicidin-derived antimicrobial peptide, a 37-residue amphipathic α-helix. Its primary research property is interaction with and disruption of microbial membranes, the basis of its antimicrobial activity in vitro.
Research framing only · No human-use claims
03Key Facts
| Classification | Immune |
| Molecular weight | 4,493.3 g/mol |
| Also known as | Cathelicidin antimicrobial peptide; CAP-18 |
| Purity spec | ≥99% HPLC |
| Verification | MZ Biolabs · 5-panel |
| Use | Research Use Only |
04FAQ
What is LL-37?
LL-37 is a immune research compound. The human cathelicidin antimicrobial peptide studied for membrane interaction and innate immunity. It is also known as Cathelicidin antimicrobial peptide; CAP-18. It is supplied strictly for laboratory research use.
What class of compound is LL-37?
LL-37 is categorized as Immune and is studied alongside related compounds in that research area.
What is the molecular weight of LL-37?
LL-37 has a molecular weight of 4,493.3 g/mol.
How is LL-37 tested?
Every Ethos Bio lot of LL-37 is analyzed by an independent third-party laboratory (MZ Biolabs, Arizona) on a five-point panel — HPLC purity, mass-spec identity, endotoxin, heavy metals, and sterility — with a batch-specific Certificate of Analysis.
View LL-37 product → · Full monograph → · Molecular weight →