Published in Food and Drug Law Weekly, February 18th, 2005
Study 1: Scientists have achieved the expression of a non-toxic mutant of Escherichia coli heat-labile enterotoxin in tobacco chloroplasts.
According to recent research from South Korea, "Chloroplast transformation systems offer unique advantages in biotechnology, including high level of foreign gene expression, maternal inheritance, and polycistronic expression. We studied chloroplast expression of LTK63 (change Ser --> Lys at position 63 in the A subunit) which is the mutant of Escherichia coli heat-labile toxin. LTK63 is devoid of any toxic activity,...
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