The biological activity of a recombinantly expressed (His)(6)-tagged peanut allergen (rAra h 1) is unaffected by endotoxin removal

Louise Bjerremann Jensen, Anna Maria Torp, Sven Bode Andersen, Per Stahl Skov, Lars K. Poulsen, Edward F. Knol, Els van Hoffen

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

20 Citationer (Scopus)

Abstract

The application of recombinant (His)(6)-tagged proteins in cell culture assays is associated with problems due to lipopolysaccharide (LPS) contamination. LPS stimulates cells of the immune system, thereby masking antigen-specific activation of T cells. Due to the affinity of LPS for histidine it is associated with difficulties to remove LPS from recombinant (His)(6)-tagged proteins. Here we describe that the Triton X-114 phase separation method can be used to remove LPS from (His)(6)-tagged proteins and that the recombinant proteins retain their biological activity.
OriginalsprogEngelsk
TidsskriftJournal of Immunological Methods
Vol/bind335
Udgave nummer1-2
Sider (fra-til)116-20
Antal sider5
ISSN0022-1759
DOI
StatusUdgivet - 2008

Citationsformater