LL-37 is available from Kimerachems for controlled laboratory and analytical research. Review the product-specific information, available formats and documentation below before ordering.
LL-37 (Host Defense Peptide Research Standard)
LL-37 is a synthetic, 37-amino acid peptide derived from the human cathelicidin family. It is a critical tool for investigating host defense mechanisms in controlled laboratory environments. Due to its amphipathic nature and positive charge, LL-37 is primarily utilized to study peptide-lipid membrane interactions, membrane disruption mechanisms, and peptide structural dynamics in solution. Kimera Chems supplies this material as a high-purity lyophilized powder for use in in vitro and analytical research.
Technical Specifications
| Property | Specification |
| Product Name | LL-37 |
| CAS Number | 154947-66-7 |
| Molecular Formula | C205H340N60O53 |
| Molecular Weight | 4493.28 g/mol |
| Physical Appearance | White to off-white lyophilized powder |
| Assay Purity | >=98% (HPLC verified) |
Research Applications
LL-37 serves as a specialized structural probe for examining host defense peptide activity and membrane-protein interactions.
Primary fields of in vitro laboratory investigation include:
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Lipid Experiments: Adding the peptide to artificial membranes to observe insertion dynamics and lipid bilayer disruption.
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Structural/Folding Studies: Analyzing peptide conformation and structural changes within varying solvent environments before membrane contact.
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Microbial Membrane Interaction: Studying interactions with bacterial membrane models in controlled culture environments.
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Cell Culture Work: Analyzing binding events and signaling effects in immune cell culture models.
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Binding Kinetics: Measuring the strength and nature of the peptide’s attachment to target lipid molecules.
Storage & Handling Guidelines
To maintain the stability and experimental validity of the lyophilized peptide, the following laboratory protocols are required:
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Lyophilized Material: Store at room temperature, ensuring the material is kept away from direct light.
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Reconstituted Material: Samples should be kept in a refrigerator.
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Long-Term Storage: The material must be stored in a freezer.
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Environmental Control: Keep the container tightly sealed after each use. Store in a dry place with a desiccant to prevent atmospheric moisture degradation.
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Aseptic Technique: Handle with clean laboratory tools to avoid contamination.
Research Use Disclaimer
Research Use Only Disclaimer: This product is developed and distributed strictly as a Research Use Only (RUO) laboratory reference chemical intended exclusively for non-clinical analytical and scientific investigation. It is not an FDA-approved drug, medication, or dietary supplement, and is strictly prohibited for human or animal consumption. Kimera Chems supplies these high-purity research materials solely to professional laboratories and qualified scientific investigators for authorized study.
| CAS Number | 154947-66-7 |
| Other Names | Antibacterial protein LL-37, Cathelicidin LL 37, GTPL5527 |
| IUPAC Name | (4S)-5-[[(2S)-6-amino-1-[[(2S,3S)-1-[[2-[[(2S)-6-amino-1-[[(2S)-1-[[(2S)-1-[[(2S)-6-amino-1-[[(2S)-1-[[(2S,3S)-1-[[(2S)-1-[[(2S)-5-amino-1-[[(2S)-1-[[(2S,3S)-1-[[(2S)-6-amino-1-[[(2S)-1-[[(2S)-1-[[(2S)-1-[[(2S)-1-[[(2S)-4-amino-1-[[(2S)-1-[[(2S)-1-[(2S)-2-[[(2S)-1-[[(2S,3R)-1-[[(2S)-4-carboxy-1-[[(1S)-1-carboxy-2-hydroxyethyl]amino]-1-oxobutan-2-yl]amino]-3-hydroxy-1-oxobutan-2-yl]amino]-5-(diaminomethylideneamino)-1-oxopentan-2-yl]carbamoyl]pyrrolidin-1-yl]-3-methyl-1-oxobutan-2-yl]amino]-4-methyl-1-oxopentan-2-yl]amino]-1,4-dioxobutan-2-yl]amino]-5-(diaminomethylideneamino)-1-oxopentan-2-yl]amino]-4-methyl-1-oxopentan-2-yl]amino]-1-oxo-3-phenylpropan-2-yl]amino]-3-carboxy-1-oxopropan-2-yl]amino]-1-oxohexan-2-yl]amino]-3-methyl-1-oxopentan-2-yl]amino]-5-(diaminomethylideneamino)-1-oxopentan-2-yl]amino]-1,5-dioxopentan-2-yl]amino]-3-methyl-1-oxobutan-2-yl]amino]-3-methyl-1-oxopentan-2-yl]amino]-5-(diaminomethylideneamino)-1-oxopentan-2-yl]amino]-1-oxohexan-2-yl]amino]-1-oxo-3-phenylpropan-2-yl]amino]-4-carboxy-1-oxobutan-2-yl]amino]-1-oxohexan-2-yl]amino]-2-oxoethyl]amino]-3-methyl-1-oxopentan-2-yl]amino]-1-oxohexan-2-yl]amino]-4-[[(2S)-6-amino-2-[[(2S)-2-[[(2S)-6-amino-2-[[(2S)-2-[[(2S)-2-[[(2S)-2-[[(2S)-2-[[2-[[(2S)-2-[[(2S)-2-amino-4-methylpentanoyl]amino]-4-methylpentanoyl]amino]acetyl]amino]-3-carboxypropanoyl]amino]-3-phenylpropanoyl]amino]-3-phenylpropanoyl]amino]-5-(diaminomethylideneamino)pentanoyl]amino]hexanoyl]amino]-3-hydroxypropanoyl]amino]hexanoyl]amino]-5-oxopentanoic acid |
| Molecular Formula | C₂₀₅H₃₄₀N₆₀O₅₃ |
| Molecular Weight | 4493.28 |
| Aliquot Concentration And Solution | Lyophilized Peptide 5mg |
Product FAQs
What is LL-37 supplied for?
This material is supplied strictly for controlled, non-clinical laboratory and analytical research. It is not intended for human or animal consumption.
Which formats are available for LL-37?
Available formats or options are shown in the product selector above. Current availability can change.
Where can I review product documentation?
Where available, batch documentation can be reviewed in the Certificate of Analysis library before ordering.



