Details

Autor(en) / Beteiligte

• Heinz-Kunert, Sherrie L
• Pandya, Ashma
• Dang, Viet Thuc
• Tran, Phuong Nguyen
• Ghosh, Sabari
• McElheny, Dan
• Santarsiero, Bernard D
• Ren, Zhong
• Nguyen, Andy I

Titel

Assembly of π‑Stacking Helical Peptides into a Porous and Multivariable Proteomimetic Framework

Ist Teil von

• Journal of the American Chemical Society, 2022-04, Vol.144 (15), p.7001-7009

Ort / Verlag

United States: American Chemical Society

Erscheinungsjahr

2022

Quelle

MEDLINE

Beschreibungen/Notizen

• The evolution of proteins from simpler, self-assembled peptides provides a powerful blueprint for the design of complex synthetic materials. Previously, peptide–metal frameworks using short sequences (≤3 residues) have shown great promise as proteomimetic materials that exhibit sophisticated capabilities. However, their development has been hindered due to few variable residues and restricted choice of side-chains that are compatible with metal ions. Herein, we developed a noncovalent strategy featuring π-stacking bipyridyl residues to assemble much longer peptides into crystalline frameworks that tolerate even previously incompatible acidic and basic functionalities and allow an unprecedented level of pore variations. Single-crystal X-ray structures are provided for all variants to guide and validate rational design. These materials exhibit hallmark proteomimetic behaviors such as guest-selective induced fit and assembly of multimetallic units. Significantly, we demonstrate facile optimization of the framework design to substantially increase affinity toward a complex organic molecule.