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Ion-dependent protein–surface interactions from intrinsic solvent response

Journal Article · · Proceedings of the National Academy of Sciences of the United States of America
 [1];  [2];  [3];  [4];  [5];  [6];  [3];  [7];  [8];  [9]
  1. Department of Chemistry, University of Washington, Seattle, WA 98195,
  2. Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, CA 92093,
  3. Physical Sciences Division, Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, WA 99354,, Materials Science and Engineering, University of Washington, Seattle, WA 98195,
  4. Department of Biochemistry, University of Washington, Seattle, WA 98195,, Institute for Protein Design, University of Washington, Seattle, WA 98195,
  5. Department of Biochemistry, University of Washington, Seattle, WA 98195,, Institute for Protein Design, University of Washington, Seattle, WA 98195,, HHMI, University of Washington, Seattle, WA 98195,
  6. Department of Chemistry, University of Washington, Seattle, WA 98195,, Department of Chemical Engineering, University of Washington, Seattle, WA 98195,
  7. Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, CA 92093,, Materials Science and Engineering, University of California, San Diego, La Jolla, CA 92093,
  8. Department of Chemistry and Chemical Biology, Rutgers University, Piscataway, NJ 08854,
  9. Department of Chemical Engineering, University of Washington, Seattle, WA 98195,, Chemical Physics Theory Team, Pacific Northwest National Laboratory, Richland, WA 99354
Significance

Hard–soft interfaces between inorganic surfaces and biomolecules promote self-assembly processes with broad implications in biogeochemistry, energy sciences, nanomedicine, and origins of life. Yet, detailed molecular-scale understanding of inorganic–biomolecule interactions and their dependence on solution conditions is missing. We present a theory for the initial stages of inorganic–biomolecule assembly based on the far-field response of water, using experimentally characterized interactions between muscovite surfaces and mica-binding proteins as model systems. Our work connects molecular details of the solution to assembly outcomes and suggests the initial driving forces for assembly are dominated by long-range, ion-specific interactions. The connections made between interfacial structure and long-range surface–biomolecule interactions provide insights toward a predictive understanding of biomolecular self-assembly on mineral surfaces.

Research Organization:
Pacific Northwest National Laboratory (PNNL), Richland, WA (United States); Univ. of Washington, Seattle, WA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC05-76RL01830; SC0019288
OSTI ID:
1798553
Alternate ID(s):
OSTI ID: 1810291
OSTI ID: 1821486
Report Number(s):
PNNL-SA--158527; e2025121118
Journal Information:
Proceedings of the National Academy of Sciences of the United States of America, Journal Name: Proceedings of the National Academy of Sciences of the United States of America Journal Issue: 26 Vol. 118; ISSN 0027-8424
Publisher:
Proceedings of the National Academy of SciencesCopyright Statement
Country of Publication:
United States
Language:
English

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