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Title: Modulating nanoparticle superlattice structure using proteins with tunable bond distributions

Journal Article · · Journal of the American Chemical Society
DOI:https://doi.org/10.1021/jacs.6b11893· OSTI ID:1371916

Here, we investigate the use of proteins with tunable DNA modification distributions to modulate nanoparticle superlattice structure. Using Beta-galactosidase (βgal) as a model system, we have employed the orthogonal chemical reactivities of surface amines and thiols to synthesize protein-DNA conjugates with 36 evenly distributed or 8 specifically positioned oligonucleotides. When assembled into crystalline superlattices with AuNPs, we find that the distribution of DNA modifications modulates the favored structure: βgal with uniformly distributed DNA bonding elements results in body-centered cubic crystals, whereas DNA functionalization of cysteines results in AB2 packing. We probe the role of protein oligonucleotide number and conjugate size on this observation, which revealed the importance of oligonucleotide distribution and number in this observed assembly behavior. These results indicate that proteins with defined DNA-modification patterns are powerful tools to control the nanoparticle superlattices architecture, and establish the importance of oligonucleotide distribution in the assembly behavior of protein-DNA conjugates.

Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Organization:
U.S. Department of Defense (DOD); Air Force Research Laboratory (AFRL), Air Force Office of Scientific Research (AFOSR); USDOE Office of Science (SC); W.M. Keck Foundation; National Science Foundation (NSF)
Grant/Contract Number:
AC02-06CH11357
OSTI ID:
1371916
Journal Information:
Journal of the American Chemical Society, Vol. 139, Issue 5; ISSN 0002-7863
Publisher:
American Chemical Society (ACS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 46 works
Citation information provided by
Web of Science

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Cited By (11)

Building expanded structures from tetrahedral DNA branching elements, RNA and TMV protein journal January 2018
DNA‐ and Field‐Mediated Assembly of Magnetic Nanoparticles into High‐Aspect Ratio Crystals journal December 2019
Efficient bioactive oligonucleotide‐protein conjugation for cell‐targeted cancer therapy journal March 2019
Programmable Atom Equivalents: Atomic Crystallization as a Framework for Synthesizing Nanoparticle Superlattices journal February 2019
Crystallizing protein assemblies via free and grafted linkers journal January 2019
Hamilton Receptor‐Mediated Self‐Assembly of Orthogonally Functionalized Au and TiO 2 Nanoparticles journal March 2019
Crystal engineering with DNA journal February 2019
Significance of DNA bond strength in programmable nanoparticle thermodynamics and dynamics journal January 2018
Particle analogs of electrons in colloidal crystals journal June 2019
Assembling Ordered Crystals with Disperse Building Blocks journal July 2019
Defining the Structure of a Protein–Spherical Nucleic Acid Conjugate and Its Counterionic Cloud journal March 2018

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