Processes

Details Processes Processes

C - Chemistry, Metallurgy

12

N

C12N 15/55 (2006.01) C07K 14/37 (2006.01) C07K 14/415 (2006.01) C12N 1/20 (2006.01) C12N 1/21 (2006.01) C12N 9/22 (2006.01) C12N 9/88 (2006.01) C12N 15/70 (2006.01) C12N 15/73 (2006.01)

Patent

CA 2091650

A B S T R A C T PROCESSES Methods for recombinant production in procayotic microorganisms such as E.coli of ribotoxins such as restrictocin, alpha-sarcin and mitogillin are described. Known methods were relatively low yielding and not cost effective for commercial use such as in the pharmaceutical industry where relatively large quantities of toxin with consistent batch to batch quality may be required for immunotoxin production. Use of recombinant methods of production open up the possibility of making ribotoxin analogues. Toxicity of ribotoxins was recognised as a concern in development of a high yielding cost effective production method. Methods for high yielding intracellular accumulation or secretion of ribotoxins are described. Use of protease deficient strains and other methods of minimising breakdown of ribotoxin by protease are preferred. Vectors and host strains for use in the methods are described.

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