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Read our LL-37 research guide

Product Highlights

  • Independently tested by third-party UK laboratories
  • Certificate of Analysis included with every order
  • Protective tracked packaging with tracked delivery
  • Next-day delivery on orders before 2pm

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Healing & Repair Peptide

LL-37

Human cathelicidin antimicrobial peptide

1
£32.99£51.5536% OFF

Limited time offer — 36% off original price

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For Research Use Only — Not for Human Consumption

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Express (Next Day)£4.99 (Free £75+)
Dispatch TimeBefore 2pm
CoverageUK Mainland Only
Research dataPubChem·PubMed
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LL-37 is the sole human cathelicidin antimicrobial peptide, a 37-amino-acid cationic peptide that plays a crucial role in innate immune defence mechanisms. This peptide has been extensively studied for its broad-spectrum antimicrobial activity against bacteria, viruses, and fungi, as well as its immunomodulatory functions and wound healing properties. Research applications span infectious disease models, biofilm disruption studies, and investigations into peptide-mediated immune signalling. LL-37's unique amphipathic alpha-helical structure enables it to interact with microbial membranes, making it a valuable subject for structural biology and antimicrobial peptide research. AllMyPeptides supplies LL-37 as a lyophilised research peptide with independent HPLC purity verification of 99%+ by independent third-party laboratories. Each order includes a batch-matched Certificate of Analysis documenting chromatographic purity, mass spectrometry confirmation, and comprehensive quality control data.

CAS Number

154947-66-7

Molecular Formula

C205H340N60O53

Molecular Weight

4493.3 g/mol

Appearance

White lyophilised powder

Sequence

Leu-Leu-Gly-Asp-Phe-Phe-Arg-Lys-Ser-Lys-Glu-Lys-Ile-Gly-Lys-Gln-Gly-Lys-Phe-Leu-Gln-Arg-Ile-Val-Gln-Arg-Ile-Lys-Gln-Phe

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Use our free Peptide Calculator and step-by-step Reconstitution Guide

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Our UK-based support team is available Mon-Fri, 9am-5pm. Fast response within 24 hours.

Frequently Asked Questions

What is the purity of your LL-37?+
Our LL-37 is 99%+ pure, verified by independent third-party HPLC and mass spectrometry analysis. A Certificate of Analysis (COA) is included with every order.
How should I store LL-37?+
LL-37 should be stored in a cool, dry place away from direct light. For long-term storage, refrigeration at 2-8°C is recommended. Always reconstitute with bacteriostatic water and use proper aseptic technique.
How do I reconstitute LL-37?+
Use our free Peptide Calculator to determine the correct amount of bacteriostatic water for your desired concentration. Slowly inject the water down the side of the vial — do not spray directly onto the peptide. Gently swirl until fully dissolved.
Is LL-37 for human consumption?+
No. All products sold by AllMyPeptides are strictly for in vitro research and laboratory use only. They are not intended for human consumption, diagnostic, or therapeutic purposes. Purchasers must be qualified researchers aged 18 or over.
How quickly will my order arrive?+
Order before 2pm Monday to Friday and we dispatch the same day on Royal Mail Tracked Express — almost always with you the next working day. Free on orders over £75. We ship UK mainland only.