De novo design of buttressed loops for sculpting protein functions
Problem
Designing multiple structured loops at protein functional sites was extremely difficult because loops are intrinsically flexible and irregular.
Why it matters
Structured loops control molecular recognition, signaling and enzyme catalysis, so designing them unlocks new protein functions.
What the AI did
A de novo computational design method produced tandem repeat proteins with 9-14 residue structured loops buttressed by extensive hydrogen bonding; designs were then experimentally characterized.
Results
Designs were monodisperse, highly soluble, folded and thermally stable; crystal structures closely matched design models; peptide binders with loop-formed binding pockets were designed.
Impact
Experimentally validated method extends de novo design to multi-loop functional proteins and peptide binders.
Record
| Venue | Nature Chemical Biology |
|---|---|
| Published | 2024 |
| Work type | article |
| Authors | Hanlun Jiang, Kevin M. Jude, Kejia Wu, Jorge A. Fallas, George Ueda, TJ Brunette, Derrick R. Hicks, Harley Pyles et al. |
| Citations | 24 (OpenAlex, at import time) |
| References | 68 |
| Model or method | not stated in source |
| Organization | not stated in source |
| Primary source | https://doi.org/10.1038/s41589-024-01632-2 |
| Open access | hybrid |
| Keywords | protein design, de novo, structured loops, hydrogen bonding, peptide binders |
Importance rating
significant — thousands to millions affected
Genuinely new capability: de novo design of multiple structured loops, enabling new protein functions and peptide binders; foundational for protein design field.