ISSN:
1432-0614
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
,
Process Engineering, Biotechnology, Nutrition Technology
Notes:
Summary In order to test the biotechnological potential of the cellular slime mould Dictyostelium discoideum the cDNA coding for human antithrombin III was expressed in this microorganism. The 1392-bp antithrombin III cDNA was fused to the N-terminal coding part of the D. discoideum actin 6 gene. In constructs carrying this artificial N-terminal coding region only low amounts of antithrombin III were detected. However, constructs from which all actin coding nucleotides were removed produced significant amounts of antithrombin III, most of which was secreted into the culture broth. Stationary cultures (1.5 × 107 cells/ml) of certain stable transformants accumulated up to 1.0 μg antithrombin III/ml culture medium within 24 h. The recombinant protein has a slightly smaller molecular weight in sodium dodecyl sulphate-polyacrylamide gels than authentic plasma antithrombin III and it is glycosylated, as determined by concanavalin A labelling.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00169756
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