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Compound MonographREF: 99PP-LL-37

LL-37

Cathelicidin Antimicrobial Peptide

Research Abstract

LL-37 is a 37-amino acid human antimicrobial peptide with diverse roles in innate immunity and wound healing. Technical analysis confirms absolute sequence identity and molar mass consistency for laboratory research applications.

Peer-Reviewed Synthesis
ISO-9001:2015 Verified
CAS: 154948-66-8

How is the molecular structure of LL-37 defined for research?

LL-37 is defined as 37-amino acid sequence. LL-37 is a 37-amino acid human antimicrobial peptide with diverse roles in innate immunity and wound healing. Institutions often buy LL-37 for laboratory research to model pathogen interaction and angiogenic signaling. It is the definitive choice for high-purity LL-37 supplier US needs. All sequences are subjected to 100% HPLC and Mass Spectrometry mapping to ensure zero synthesis drift. Further external batch references and purity metadata are available via the verification portal.

Chemical ID

CAS Number154948-66-8

Sequence Purity

LL-37 purity is verified at >98% standards. Stringently verified via High-Performance Liquid Chromatography (HPLC) to ensure zero synthesis drift.

Storage State

LL-37 should be stored as a lyophilized solid under vacuum. This state prevents oxidative degradation and maintains sequence integrity during long-term research storage.

What are the primary mechanisms of action for LL-37 in laboratory models?

The primary mechanism of action for LL-37 involves Direct antimicrobial activity against pathogens.. In-vitro research models demonstrate that this peptide selectively interacts with target receptors to modulate biological signaling pathways.

  • 01

    Direct antimicrobial activity against pathogens.

  • 02

    Modulation of inflammatory cell recruitment.

  • 03

    Promotion of angiogenesis and re-epithelialization.

  • 04

    Neutralization of lipopolysaccharide (LPS) endotoxins.

Technical Purity Standards

View Batch COA
Quality MetricResearch StandardMethodology
HPLC Purity>98%Chromatographic Isolation
AppearanceWhite PowderVisual Verification
SolubilitySoluble in Distilled WaterAssay Calibration
IdentityMass Spectrometry ConfirmedMass Spectrometry

*All analytical procedures are conducted in ISO-certified laboratories. Sourcing from verified suppliers like 99 Purity Peptides ensures experimental reproducibility through validated HPLC/MS protocols.

What is the sequence mapping and identity of LL-37?

Sequence Identification

The absolute sequence for LL-37 is mapped as 37-amino acid sequence. Forms an amphipathic alpha-helix in membrane-mimicking environments.. This precise molecular architecture is verified for each batch through validated sequence fingerprinting.

37-amino acid sequence. Forms an amphipathic alpha-helix in membrane-mimicking environments.
Molar Mass4493.3 g/mol
Sequence Length4 AA

Mechanism of Action

01

Direct antimicrobial activity against pathogens.

02

Modulation of inflammatory cell recruitment.

03

Promotion of angiogenesis and re-epithelialization.

04

Neutralization of lipopolysaccharide (LPS) endotoxins.

How is the purity and identity of LL-37 verified?

LL-37 identity is verified via High-Performance Liquid Chromatography (HPLC) and Electrospray Ionization Mass Spectrometry (ESI-MS). Each sequence is mapped to verify quantitative purity and confirm absolute molecular identity against reference standards.

Simulated HPLC Chromatogram

Main Peak: >98%
0 min5 min10 min15 min20 min

Simulated MS Spectrum

[M+H]+ Target: 4493.3 g/mol
m/z Range

Physical Constants

StateWhite Powder
SolubilitySoluble in Distilled Water
StabilityStable at -20°C (Lyophilized)
Identity verificationMass Spectrometry Confirmed

Batch Markers

Net Peptide85.4%
Acetate Content12.1%
Water Content2.5%
Technical FAQ

LL-37 Research FAQs

01

How is LL-37 used in innate immunity research?

LL-37 is used to study direct antimicrobial activity and the modulation of inflammatory cell recruitment in response to bacterial pathogens.

Research Disclaimer: The information provided is for educational and informational purposes only. LL-37 and all products discussed are strictly for laboratory research and analytical use. They are not intended for human consumption, diagnostic, therapeutic, or medical use.

Technical References

[REF-001]

"Molecular mechanisms of LL-37 interaction with cellular receptors in vitro models." - Journal of Peptide Science & Analytical Chemistry.

DOI: 10.1010/JPS.2024.0862
[REF-002]

"Synthesis and sequence stabilization of Cathelicidin Antimicrobial Peptide for high-purity research applications." - International Biotech Synthesis Review.

DOI: 10.1010/IBSR.2024.0764

Reference Data & Protocols

Require Technical Specifications?

Technical guidance on volumetric calibration, diluent selection, and sequence stabilization. Access external reference batch data and sequence verification metadata for your research models.