Coiled-Coil
Coiled-Coil — A structural motif where two or more alpha-helices wind around each other in a superhelical fashion, common in protein-protein interactions.
What Is a Coiled-Coil?
A coiled-coil is a structural motif in which two or more alpha-helices wind around each other with a characteristic heptad repeat pattern (abcdefg) where positions a and d contain hydrophobic residues (Leu, Ile, Val) that interdigitate in a "knobs-into-holes" packing arrangement.
Peptide Design Applications
- Self-assembly: Designed coiled-coils create defined dimers, trimers, or higher-order assemblies
- Biomaterials: Coiled-coil peptides as physical crosslinks in responsive hydrogels
- Drug delivery: Coiled-coil "lock-and-key" systems for triggered peptide release
Frequently Asked Questions
What is Coiled-Coil?
A structural motif where two or more alpha-helices wind around each other in a superhelical fashion, common in protein-protein interactions.
Why is Coiled-Coil important in peptide research?
Coiled-Coil 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.