LL-37 5mg Peptides
Grounded in precision and built for consistency, this research peptide is prepared to meet exacting laboratory expectations.
LL-37 is supplied as a research-grade lyophilized peptide vial with a total strength of 5mg. Presented as an unflavored, fine lyophilized powder, this cathelicidin peptide is suitable for qualified laboratory work where clarity, purity, and reliable performance are essential.
- Each vial contains 5mg of LL-37, a cathelicidin peptide widely investigated in antimicrobial, membrane-interaction, and immunology research across in vitro and exploratory laboratory models.
As a non-edible laboratory material, this lyophilized format supports controlled reconstitution and method development by trained professionals. Researchers commonly evaluate LL-37 in buffered environments appropriate to their protocols, focusing on consistency, assay compatibility, and reliable handling. Texture and taste are not applicable; the emphasis is on material integrity, solubility behavior under defined conditions, and reproducible outcomes within validated workflows.
Handling considerations typically include careful reconstitution with suitable sterile solvents, aseptic technique, and minimal exposure to moisture. Laboratories often store lyophilized peptides in cold, dry conditions and protect them from light to maintain integrity, following internal SOPs. As with any sensitive peptide material, appropriate PPE, calibrated equipment, and cleanroom-minded practices help preserve quality and reduce variability throughout preparation and use.
Ingredients: LL-37.
Peptide Scientific Labs operates with a quality-first mindset. Each lot is produced and fulfilled in the USA and is supported by rigorous identity and purity assessments (including HPLC and mass spectrometry) to verify consistency. Lot-specific Certificates of Analysis are available for transparency, and packaging is designed to help protect the compound from environmental stress during transit. This product is intended strictly for laboratory research purposes; it is not a drug, food, or cosmetic, and is not intended for human or veterinary use. For qualified professionals only. By emphasizing controlled manufacturing, robust documentation, and dependable logistics, Peptide Scientific Labs provides researchers with a reliable source for high-quality peptides, enabling careful study, method development, and consistent laboratory performance.
- Most orders ship within 24 hours and arrive within 3 to 5 days of leaving our warehouse.
- Shipping is free on orders of $99+ (except Hawaii and Alaska).
- All orders ship in discreet packaging via USPS Ground Advantage mail.
Delivery restrictions vary by state.
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Frequently Asked Questions
What is LL-37 typically studied for?
Researchers usually study LL-37 for innate immunity, antimicrobial activity, biofilm-related questions, inflammatory signaling, and wound-environment biology. Because it sits at the intersection of immunity and tissue repair, it often appears in experimental discussions of both infection control and healing pathways.
How do antimicrobial peptides differ from antibiotics?
Classical antibiotics are usually small-molecule compounds — many derived from microbial secondary metabolites — that act on specific bacterial targets such as cell wall synthesis, ribosomes, or DNA replication. Antimicrobial peptides, by contrast, are short amino acid chains produced as part of the innate immune response, and their primary research-studied mechanism typically involves direct interaction with microbial membranes rather than a single enzymatic target.
Because AMPs often act on membrane structure rather than one discrete protein, they have been of research interest in the context of membrane biophysics and resistance evolution. This makes them a distinct class of study from conventional antibiotics, even when the two are sometimes grouped together in broader antimicrobial research literature.
Where do antimicrobial peptides occur naturally?
Antimicrobial peptides are found across essentially every branch of life. In mammals, well-studied examples include cathelicidins (such as LL-37) and defensins, which are expressed in skin, mucosal surfaces, neutrophils, and epithelial tissues. In amphibians, insects, and plants, AMPs form a major part of innate immunity and are secreted in skin, hemolymph, seeds, and other tissues.
This broad distribution across kingdoms is one reason AMPs are a significant subject of biological research — they represent a conserved, ancient strategy for host defense. Peptide Scientific Labs supplies synthetic AMP reference compounds for in vitro research use only.
What are antimicrobial peptides?
Antimicrobial peptides (AMPs) are short, naturally occurring chains of amino acids that act as part of the innate immune defense in virtually all living organisms — from bacteria and plants to insects, amphibians, and mammals. They are typically between 10 and 50 amino acids long and often carry a net positive charge, which allows them to interact with negatively charged microbial membranes.
In research, AMPs are studied as a broad and evolutionarily ancient class of host defense molecules. They are investigated in the context of innate immunity, membrane biology, structure–activity relationships, and microbial resistance. All AMPs offered by Peptide Scientific Labs are intended strictly for in vitro laboratory research and are not drugs, supplements, or therapeutics.
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