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Expanding the Versatility of Phage Display I: Efficient Display of Peptide-Tags on Protein VII of the Filamentous Phage

Løset, Geir Åge; Bogen, Bjarne; Sandlie, Inger
Journal article; PublishedVersion; Peer reviewed
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35.+pone.0014702.pdf (303.3Kb)
Year
2011
Permanent link
http://urn.nb.no/URN:NBN:no-57286

CRIStin
830341

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Appears in the following Collection
  • Institutt for molekylær biovitenskap [121]
  • Institutt for klinisk medisin [7762]
  • CRIStin høstingsarkiv [22517]
Original version
PLoS ONE. 2011, 6 (2):e14702, DOI: http://dx.doi.org/10.1371/journal.pone.0014702
Abstract
Background: Phage display is a platform for selection of specific binding molecules and this is a clear-cut motivation for increasing its performance. Polypeptides are normally displayed as fusions to the major coat protein VIII (pVIII), or the minor coat protein III (pIII). Display on other coat proteins such as pVII allows for display of heterologous peptide sequences on the virions in addition to those displayed on pIII and pVIII. In addition, pVII display is an alternative to pIII or pVIII display.

Methodology/Principal Findings: Here we demonstrate how standard pIII or pVIII display phagemids are complemented with a helper phage which supports production of virions that are tagged with octa FLAG, HIS6 or AviTag on pVII. The periplasmic signal sequence required for pIII and pVIII display, and which has been added to pVII in earlier studies, is omitted altogether.

Conclusions/Significance: Tagging on pVII is an important and very useful add-on feature to standard pIII and pVII display. Any phagemid bearing a protein of interest on either pIII or pVIII can be tagged with any of the tags depending simply on choice of helper phage. We show in this paper how such tags may be utilized for immobilization and separation as well as purification and detection of monoclonal and polyclonal phage populations.

© 2011 Wälchli et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
 
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