Antimicrobial Peptides

Plantaricin A is an antimicrobial peptide that can be derived from Lactobacillus plantarum. Plantaricin A has a synergistic effect with Ciprofloxacin. Plantaricin A shows anti-microbial activity. Plantaricin A increases the membrane potential of S. aureus and the level of intracellular ROS. Plantaricin A inhibits the function of the efflux pump by binding it and altering the structure of MepA, NorA, and LmrS. Plantaricin A significantly relieves inflammation, and promotes wound healing. Plantaricin A permeabilizes cancerous rat pituitary cells^[1][2].

Aurein 1.2 is a C-terminally amidated antimicrobial peptide found in Litoria raniformis. Aurein 1.2 exhibits moderate, broad-spectrum antimicrobial activity against a variety of bacteria, with a MIC of 12-100 μg/mL. Aurein 1.2 forms an amphipathic α-helix with distinct hydrophilic and hydrophobic faces, and may exert antimicrobial and cytotoxic effects on tumor cells by disrupting cell membranes. Aurein 1.2 can be used in studies related to antimicrobial peptides, membrane-active peptides, and tumor cytotoxicity.

Lunasin is a bioactive peptide with antioxidant, anti-inflammatory, anticancer and anti-aging properties. Lunasin can be isolated from soybean. Lunasin also has an epigenetic mechanism of action associated with histone acetylation. Lunasin can be internalized into cells and inhibit Oncosphere formation in cancer cells.

Buforin II, derived from buforin I, a protein isolated from the stomach of the Asian toad Bufo bufo gargarizans, is a potent antimicrobial peptide. Buforin II has antimicrobial activity against a broad spectrum of Gram-positive and Gram-negative bacteria.

Cyclo(L-Trp-L-Trp) is an antibiotic, and shows antimicrobial activity. Cyclo(L-Trp-L-Trp) can inhibit A. baumannii, as well as Candida albicans, Bacillus subtilis, Micrococcus luteus, Saccharomyces cerevisiae, Aspergillus niger, Staphylococcus aureus. Cyclo(L-Trp-L-Trp) can be used in microbial infection research.

LL-37 scrambled peptide acetate is a scrambled version of cathelicidin anti-microbial peptide LL-37. LL-37 scrambled peptide acetate can be used as a negative control of LL-37 peptide studies.

NP213 TFA is a rapidly acting, novel, first-in-class synthetic antimicrobial peptide (AMP), has anti-fungal activities. NP213 TFA targets the fungal cytoplasmic membrane and plays it role via membrane perturbation and disruption. NP213 TFA is effective and well-tolerated in resolving nail fungal infections.

Arylomycin A2, an antibiotic (Antibiotic), is a lipopeptide type I signal peptidase (SPase I) inhibitor. Arylomycin A2 has antibacterial effects.

Peceleganan (PL-5) is an artificial antimicrobial cecropin A (1-10) × melittin B (3-18) hybrid (10+16)-peptide analogue. Peceleganan inhibits wound infection.

Indolicidin acetate is a potent antimicrobial peptide purified from the cytoplasmic granules of bovine neutrophils.

LL-37, acetylated, amidated is a cathelicidin peptide LL-37 acetylated on the N-terminus and amidated on the C-terminus. The single human cathelicidin peptide LL-37 has antimicrobial and anti-biofilm activity against multiple Gram-positive and Gram-negative human pathogens, and has wound-healing effects on the host.

Cyclo (Arg-Pro) TFA is a chitinase inhibitor. Cyclo (Arg-Pro) TFA disrupts cell separation and morphological transition of yeast by inhibiting chitinase activity. Cyclo (Arg-Pro) TFA prevents cell separation of Saccharomyces cerevisiae, leading to the formation of grape-like cell clusters, without inhibiting cell growth. Cyclo (Arg-Pro) TFA blocks the morphological transition of Candida albicans from yeast form to hyphal form, without inhibiting cell growth.

Delta-hemolysin (Delta-lysin), a 26 amino acid peptide, is a hemolytic peptide produced by Staphylococcus. Delta-hemolysin may slightly perturb a membrane or lead to cell lysis. Delta-hemolysin is a model in the study of peptides interacting with membranes. Delta-hemolysin is poorly active against bacteria.

PMAP-23 is a biological active peptide. (an antimicrobial peptide (AMP) derived from porcine myeloid.)

LL-37 amide is a selective agonist of formyl peptide receptor-like FPRL1, effectively inhibiting periodontal pathogens (ED₉₉=8.5-8.7 μg/mL). LL-37 amide exerts its bactericidal effect by activating FPRL1-mediated immune cell chemotaxis and disrupting bacterial cell membrane integrity. It can also regulate inflammatory responses (inhibiting the release of factors such as TNF-α) and promote angiogenesis. Amidation modification reduces its sensitivity to serum inhibition and improves its stability. LL-37 amide possesses key activities in bactericidal action, immunomodulation, and wound healing, and is mainly used in research on infection-related diseases such as periodontal disease and deep tissue injuries (pressure ulcers), and wound healing.

P-113 is an antimicrobial peptide (AMP) derived from the human salivary protein histatin 5. P-113 is active against clinically important microorganisms such as Pseudomonas spp., Staphylococcus spp., and C. albicans.

Cecropin P1, porcine is an antibacterial peptide that can be isolated from the upper part of the small intestine of the pig. Cecropin P1, porcine shows antibacterial activity against Gram-negative bacteria. Cecropin P1, porcine shows antiviral activity and inhibits PRRSV infection.

Lactoferrin 17-41 (Lactoferricin B) acetate, a peptide corresponding to residues 17-41 of bovine lactoferrin, has antimicrobial activity against a wide range of microorganisms, including Gram-positive and Gramnegative bacteria, viruses, protozoa, and fungi. Lactoferrin 17-41 acetate has antitumor activities.

LAH4, an alpha-helix of the designed amphipathic peptide antibiotic, exhibits potent antimicrobial, nucleic acid transfection and cell penetration activities. LAH4 possesses high plasmid DNA delivery capacities. LAH4 has a strong affinity for anionic lipids found in the outer membrane of bacterial membranes.

Pediocin PA-1 TFA is a class IIa bacteriocin that specifically binds to membrane proteins of susceptible Gram-positive bacteria (such as Listeria monocytogenes) to form voltage-independent hydrophilic pores, leading to dissipation of proton motive force, ATP depletion and cell death. Pediocin PA-1 TFA shows no significant activity against intact Gram-negative bacteria, strains carrying immunity genes and obligate anaerobic commensal gut microbiota, and its bactericidal function depends on the integrity of disulfide bonds, with activity lost upon reduction. Pediocin PA-1 TFA can be used not only as a food biopreservative but also for research on listeriosis.