Quantitative study of Au(III) and Pd(II) ion biosorption on genetically engineered Tobacco mosaic virus.

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TitleQuantitative study of Au(III) and Pd(II) ion biosorption on genetically engineered Tobacco mosaic virus.
Publication TypeJournal Article
Year of Publication2010
AuthorsLim, J-S, Kim, S-M, Lee, S-Y, Stach, EA, Culver, JN, Harris, MT
JournalJ Colloid Interface Sci
Volume342
Issue2
Pagination455-61
Date Published2010 Feb 15
ISSN1095-7103
KeywordsAdsorption, Gold, Organisms, Genetically Modified, Palladium, Temperature, Tobacco, Tobacco Mosaic Virus
Abstract

One major obstacle in the mineralization of metal onto biologically derived templates is the lack of fundamental information pertaining to the relationship between metal ion loading and overall metal deposition onto the biotemplate. This study focuses on Au(III) and Pd(II) biosorption on the genetically-modified model biological template Tobacco mosaic virus (TMV1Cys). Metal ion (Au(III) or Pd(II)) loading on the TMV1Cys template was measured as a function of the equilibrium concentration of Au(III) or Pd(II) ions in solution at several temperatures. In addition, the Pd(II) loading on the TMV-wild (wild-type TMV) and TMV1Cys were compared to estimate the improvement of metal ion loading by genetic modification of the biotemplate. The gold or palladium coatings on the TMV1Cys were prepared using various metal ion loadings. Results show, for a range of metal ion loadings, a positive correlation existed between the concentration of the metal ions and the coating density of the metals deposited on the virus surface.

DOI10.1016/j.jcis.2009.10.028
Alternate JournalJ Colloid Interface Sci
PubMed ID19914631