title: Nanoparticle-templated assembly of viral protein cages.
abstract: Self-assembly of regular protein surfaces around nanoparticle templates provides a new class of hybrid biomaterials with potential applications in medical imaging and in bioanalytical sensing. We report here the first example of efficiently self-assembled virus-like particles (VLPs) having a brome mosaic virus protein coat and a functionalized gold core. The present study indicates that functionalized gold particles can initiate VLP assembly by mimicking the electrostatic behavior of the nucleic acid component of the native virus. These VLP constructs are symmetric, with the protein stoichiometry and packaging properties indicating similarity to the icosahedral packing of the capsid. Moreover, a pH-induced swelling transition of the VLPs is observed, in direct analogy to the native virus.
authors.affiliation: Department of Chemistry, Indiana University, Bloomington, Indiana 47405, USA.
authors.forename: Chao
authors.initials: C
authors.lastname: Chen
authors.forename: Marie-Christine
authors.initials: MC
authors.lastname: Daniel
authors.forename: Zachary T
authors.initials: ZT
authors.lastname: Quinkert
authors.forename: Mrinmoy
authors.initials: M
authors.lastname: De
authors.forename: Barry
authors.initials: B
authors.lastname: Stein
authors.forename: Valorie D
authors.initials: VD
authors.lastname: Bowman
authors.forename: Paul R
authors.initials: PR
authors.lastname: Chipman
authors.forename: Vincent M
authors.initials: VM
authors.lastname: Rotello
authors.forename: C Cheng
authors.initials: CC
authors.lastname: Kao
authors.forename: Bogdan
authors.initials: B
authors.lastname: Dragnea
mesh_terms: D040761:Biomimetic Materials / Q000737:chemistry*; D003460:Crystallization / Q000379:methods*; D006046:Gold / Q000737:chemistry; D008422:Materials Testing; D046912:Multiprotein Complexes / Q000737:chemistry / Q000648:ultrastructure; D049329:Nanostructures / Q000737:chemistry* / Q000648:ultrastructure*; D036103:Nanotechnology / Q000379:methods*; D011487:Protein Conformation; D013499:Surface Properties; D014764:Viral Proteins / Q000737:chemistry* / Q000648:ultrastructure*; D019065:Virus Assembly
chemical_list: D046912:Multiprotein Complexes; D014764:Viral Proteins; D006046:Gold