Download MendeleyNMR solution structure of a highly stable de novo heterodimeric coiled-coil
Lindhout, D.A., Litowski, J.R., Mercier, P., Hodges, R.S., Sykes, B.D.(2004) Biopolymers 75: 367-375
- PubMed: 15457434
- DOI: https://doi.org/10.1002/bip.20150
- Primary Citation of Related Structures:
1U0I - PubMed Abstract:
The NMR solution structure of a highly stable coiled-coil IAAL-E3/K3 has been solved. The E3/K3 coiled-coil is a 42-residue de novo designed coiled-coil comprising three heptad repeats per subunit, stabilized by hydrophobic contacts within the core and electrostatic interactions at the interface crossing the hydrophobic core which direct heterodimer formation. This E3/K3 domain has previously been shown to have high alpha-helical content as well as possessing a low dissociation constant (70 nM). The E3/K3 structure is completely alpha-helical and is an archetypical coiled-coil in solution, as determined using a combination of (1)H-NOE and homology based structural restraints. This structure provides a structural framework for visualizing the important interactions for stability and specificity, which are key to protein engineering applications such as affinity purification and de novo design.
Organizational Affiliation:
CIHR Group in Protein Structure and Function and Department of Biochemistry, University of Alberta, Edmonton, Alberta, Canada T6G 2H7.
