C - Chemistry – Metallurgy – 07 – K
Patent
C - Chemistry, Metallurgy
07
K
195/73, 530/15.0
C07K 14/415 (2006.01)
Patent
CA 1308680
Abstract of the Disclosure Substantially pure, intracellularly produced, soluble recombinant ricin toxin A (RTA) is recovered from transformed cells by disrupting the cell membrane, removing insoluble cell membrane materials from the disruptate, adjusting the pH of the cell membrane material-free solution to 6 to 6.5 and the conductivity to 1.25 to 1.75 millisiemens, passing the adjusted solution through a bed of SP- cellulose cation exchanger, and eluting the substantially pure RTA from the bed.
528972
Borden Ladner Gervais Llp
Chiron Corporation
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