Download MendeleyMetal-Templated Design of Chemically Switchable Protein Assemblies with High-Affinity Coordination Sites.
Kakkis, A., Gagnon, D., Esselborn, J., Britt, R.D., Tezcan, F.A.(2020) Angew Chem Int Ed Engl 59: 21940-21944
- PubMed: 32830423
- DOI: https://doi.org/10.1002/anie.202009226
- Primary Citation of Related Structures:
6WYU, 6WZ0, 6WZ1, 6WZ2, 6WZ3, 6WZ7, 6WZA, 6WZC, 6X7E, 6X8X - PubMed Abstract:
To mimic a hypothetical pathway for protein evolution, we previously tailored a monomeric protein (cyt cb 562 ) for metal-mediated self-assembly, followed by re-design of the resulting oligomers for enhanced stability and metal-based functions. We show that a single hydrophobic mutation on the cyt cb 562 surface drastically alters the outcome of metal-directed oligomerization to yield a new trimeric architecture, (TriCyt1) 3. This nascent trimer was redesigned into second and third-generation variants (TriCyt2) 3 and (TriCyt3) 3 with increased structural stability and preorganization for metal coordination. The three TriCyt variants combined furnish a unique platform to 1) provide tunable coupling between protein quaternary structure and metal coordination, 2) enable the construction of metal/pH-switchable protein oligomerization motifs, and 3) generate a robust metal coordination site that can coordinate all mid-to-late first-row transition-metal ions with high affinity.
Organizational Affiliation:
Department of Chemistry and Biochemistry, University of California, San Diego, 9500 Gilman Drive, La Jolla, CA, 92093, USA.
