Antimicrobial peptides (AMPs) are peptides that form part of the host's important innate immunity mechanism against pathogenic microorganisms such as Gram positive and negative bacteria, fungi and viruses. AMPs are short peptides, exhibit a broad-spectrum antimicrobial activity at physiological conditions and are predominantly cationic.
LL-37 is a 37 amino acid host defence peptide derived from the C-terminus of the only human calethicidin, hCAP18. This peptide has been found in many different cell types and body fluids and is linked with antimicrobial, antitumor, antiviral and immunomodulatory properties.
Cytotoxic to both bacterial and normal eukaryotic cells, LL-37 is significantly resistant to proteolytic degradation in solution. In addition, LL-37 has been shown to play a role in chemoattraction, dendritic cell differentiation, mast cell degranulation, cytokine secretion, angiogenesis stimulation. LL-37 has also been investigated as a wound-healing agent. In other species, the C-terminal antimicrobial region varies in sizes, sequences and structures.
LifeTein's LL-37 is an all D-amino acid peptide. Please read more details about the D amino acid peptides: https://www.lifetein.com/Peptide-Synthesis-D-Amino-Acid.html