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Träfflista för sökning "WFRF:(Nygren Peter) ;srt2:(1990-1994);lar1:(kth)"

Search: WFRF:(Nygren Peter) > (1990-1994) > Royal Institute of Technology

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  • Nilsson, J, et al. (author)
  • Competitive elution of protein A fusion proteins allows specific recovery under mild conditions.
  • 1994
  • In: European Journal of Biochemistry. - : Wiley. - 0014-2956 .- 1432-1033. ; 224:1, s. 103-8
  • Journal article (peer-reviewed)abstract
    • A novel system is described for mild elution of fusion proteins by competitive elution. The approach is based on displacement of immobilized fusions containing a monovalent IgG-binding staphylococcal protein A fragment (Z) from an IgG-affinity matrix by a divalent fragment fused to a serum-albumin-binding region derived from streptococcal protein G. Using real-time interaction analysis, the binding (K(aff)) to polyclonal human IgG was found to be 3.3 (+/- 0.4) x 10(8) M-1 for divalent ZZ and 2.0 (+/- 0.1) x 10(7) M-1 for monovalent Z. This more than tenfold difference in binding strength ensures a high efficiency in the elution step. The competitor protein can specifically be removed and recovered from the elution mixture by subsequent passage through a human serum albumin(HSA)-affinity column, leaving only the target fusion protein in the flow-through fraction. Here, we show that a recombinant Klenow fragment of DNA polymerase I expressed in Escherichia coli can be recovered with high yield, and retained activity, from a crude bacterial lysate by IgG-affinity chromatography using mild conditions during both binding and elution.
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  • Result 1-1 of 1
Type of publication
journal article (1)
Type of content
peer-reviewed (1)
Author/Editor
Nilsson, J. (1)
Nilsson, Peter (1)
Pettersson, L (1)
Uhlen, M (1)
Nygren, P A (1)
Williams, Y (1)
University
Language
English (1)
Research subject (UKÄ/SCB)
Medical and Health Sciences (1)
Year

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