Fatty Acid Conjugation
Fatty Acid Conjugation — The attachment of a fatty acid chain to a peptide to enhance albumin binding, extend half-life, and improve pharmacokinetic properties.
What Is Fatty Acid Conjugation?
Fatty acid conjugation is the covalent attachment of a fatty acid chain to a peptide to extend half-life through reversible albumin binding. This lipidation strategy is the basis for several blockbuster peptide drugs including semaglutide (C18 fatty diacid), liraglutide (C16 palmitic acid), and insulin detemir/degludec.
Design Principles
- Chain length: C14-C20. Longer chains = stronger albumin binding = longer half-life
- Linker: Mini-PEG or glutamic acid spacers between peptide and fatty acid optimize albumin binding
- Attachment: Typically via Lys side chain or Cys thiol during SPPS
Frequently Asked Questions
What is Fatty Acid Conjugation?
The attachment of a fatty acid chain to a peptide to enhance albumin binding, extend half-life, and improve pharmacokinetic properties.
Why is Fatty Acid Conjugation important in peptide research?
Fatty Acid Conjugation is a fundamental concept in modification 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.
Authority Sources
- Fatty Acid Conjugation on Wikipedia
- Search Fatty Acid Conjugation on PubChem (NIH)
- Research articles on ScienceDirect