Please use this identifier to cite or link to this item: https://doi.org/10.1021/bc0402888
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dc.titleChemical conjugation of heterologous proteins on the surface of cowpea mosaic virus
dc.contributor.authorChatterji, A.
dc.contributor.authorOchoa, W.
dc.contributor.authorShamieh, L.
dc.contributor.authorSalakian, S.P.
dc.contributor.authorWong, S.M.
dc.contributor.authorClinton, G.
dc.contributor.authorGhosh, P.
dc.contributor.authorLin, T.
dc.contributor.authorJohnson, J.E.
dc.date.accessioned2014-10-27T08:23:48Z
dc.date.available2014-10-27T08:23:48Z
dc.date.issued2004-07
dc.identifier.citationChatterji, A., Ochoa, W., Shamieh, L., Salakian, S.P., Wong, S.M., Clinton, G., Ghosh, P., Lin, T., Johnson, J.E. (2004-07). Chemical conjugation of heterologous proteins on the surface of cowpea mosaic virus. Bioconjugate Chemistry 15 (4) : 807-813. ScholarBank@NUS Repository. https://doi.org/10.1021/bc0402888
dc.identifier.issn10431802
dc.identifier.urihttp://scholarbank.nus.edu.sg/handle/10635/100258
dc.description.abstractGenetic economy leads to symmetric distributions of chemically identical subunits in icosaherdal and helical viruses. Modification of the subunit genes of a variety of viruses has permitted the display of polypeptides on both the infectious virions and virus particles made in expression systems. Icosahedral chimeric particles of this type often display novel properties resulting in high local concentrations of the insert. Here we report an extension of this concept in which entire proteins were chemically cross-linked to lysine and cysteine residues genetically engineered on the coat protein of icosahedral Cowpea mosaic virus particles. Three exogenous proteins, the LRR domain of internalin B, the T4 lysozyme, and the Intron 8 gene product of the of the HER2 tyrosine kinase receptor were derivatized with appropriate bifunctional cross-linkers and conjugated to the virus capsid. Characterization of these particles demonstrated that (1) virtually 100% occupancy of the 60 sites was achieved; (2) biological activity (either enzyme or binding specificity) of the attached protein was preserved; (3) in one case (LRR-internalin B) the attached protein conformed with the icosahedral symmetry to the extent that a reconstruction of the derivatized particles displayed added density with a shape consistent with the X-ray structure of the attached protein. Strategies demonstrated here allow virus particle targeting to specific cell types and the use of an icosahedral virus as a platform for structure determination of small proteins at moderate resolution.
dc.description.urihttp://libproxy1.nus.edu.sg/login?url=http://dx.doi.org/10.1021/bc0402888
dc.sourceScopus
dc.typeArticle
dc.contributor.departmentBIOLOGICAL SCIENCES
dc.description.doi10.1021/bc0402888
dc.description.sourcetitleBioconjugate Chemistry
dc.description.volume15
dc.description.issue4
dc.description.page807-813
dc.description.codenBCCHE
dc.identifier.isiut000222880900017
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