Palmitoylation
Palmitoylation — The covalent attachment of palmitic acid to a cysteine residue, anchoring peptides to cell membranes and modulating protein trafficking.
What Is Palmitoylation?
Palmitoylation is the reversible attachment of palmitic acid (C16:0) to cysteine side chains via a thioester bond (S-palmitoylation). It is the most common lipid modification of intracellular proteins, anchoring them to membranes and regulating trafficking, signaling, and protein-protein interactions.
Peptide Applications
- Lipidation strategy: Synthetic N-terminal palmitoylation increases peptide membrane interaction and cellular uptake
- Self-adjuvanting vaccines: Pam2Cys and Pam3Cys lipopeptide adjuvants activate TLR2
- Half-life extension: Palmitoylated peptides bind serum albumin (weaker than C18 fatty acids)
Frequently Asked Questions
What is Palmitoylation?
The covalent attachment of palmitic acid to a cysteine residue, anchoring peptides to cell membranes and modulating protein trafficking.
Why is Palmitoylation important in peptide research?
Palmitoylation 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
- Palmitoylation on Wikipedia
- Search Palmitoylation on PubChem (NIH)
- Research articles on ScienceDirect