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Biological activity of recombinant Ricinus communis agglutinin A chain produced in Escherichia coli
M O'Hare1, L M Roberts, J M Lord
1Department of Biological Sciences, University of Warwick, Coventry, UK.
FEBS Letters
|March 16, 1992
Abstract:
DNA encoding Ricinus communis agglutinin A chain was ligated into the E. coli expression vector pDS 5/3. Induced E. coli 71.18 cells which had been transformed with this plasmid express Ricinus communis agglutinin A chain in a soluble and biologically active form. Recombinant Ricinus communis agglutinin A chain had ribosomal RNA N-glycosidase activity and was approximately 10-fold less active than ricin A chain in a cell-free protein synthesis inhibition assay.