Lipopeptide
Lipopeptide — A peptide covalently linked to a lipid moiety, enhancing membrane permeability and often exhibiting antimicrobial or surfactant properties.
What Is a Lipopeptide?
A lipopeptide is a peptide covalently attached to a lipid moiety, either naturally (e.g., daptomycin, polymyxins, surfactin) or through synthetic lipidation. Natural lipopeptides are produced by bacteria and fungi as antimicrobial weapons, and several are FDA-approved antibiotics targeting drug-resistant infections.
Examples
- Daptomycin: Cyclic lipopeptide antibiotic (decanoyl tail). Inserts into gram-positive membranes causing depolarization
- Polymyxin B/E: Cyclic lipopeptides targeting gram-negative LPS. Last-resort antibiotics
- Pam3CSK4: Synthetic lipopeptide TLR2 agonist used as vaccine adjuvant
Frequently Asked Questions
What is Lipopeptide?
A peptide covalently linked to a lipid moiety, enhancing membrane permeability and often exhibiting antimicrobial or surfactant properties.
Why is Lipopeptide important in peptide research?
Lipopeptide is a fundamental concept in structure as it relates to peptide science. It directly influences experimental design, compound characterization, and the reliability of research outcomes across biochemistry and molecular biology disciplines.