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  • Title: Thermal transition of native tobacco mosaic virus and RNA-free viral proteins into spherical nanoparticles.
    Author: Atabekov J, Nikitin N, Arkhipenko M, Chirkov S, Karpova O.
    Journal: J Gen Virol; 2011 Feb; 92(Pt 2):453-6. PubMed ID: 20980527.
    Abstract:
    Spherical nanoparticles (SNPs) were generated by two-step thermal remodelling of native tobacco mosaic virus (TMV) at 94 °C. Particles of irregular shape and varying size were generated by TMV at 90 °C. They could be converted into SNPs by heating at 94 °C and were considered to be intermediate precursors of SNPs. In addition to SNP monomers (53 nm diameter), generated by individual TMV virions, large SNPs (100-800 nm diameter) were assembled. The size of the SNPs depended on the TMV concentration. The SNPs could be generated by distinct forms of RNA-free TMV coat protein (CP) aggregates and individual CP subunits. A one-step SNP assembly appeared to occur in these cases. These results show that SNPs represent a new type of particle nanoplatform for producing compositions of SNPs with foreign protein molecules bound to their surface.
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